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Greenbelt
Jump to: Photo, Contact, Coordinates, News, Links
Greenbelt Contact:
| Agency | Peraton |
| Mailing Address | NASA SLR Attn Christopher Szwec 7855 Walker Drive Greenbelt, MD 20770 |
| Primary Contact | |
| Contact Name | Maceo Blount |
| Telephone (primary) | 301-286-5050 |
| Telephone (secondary) | 301-310-1237 |
| Fax | 301-286-1636 |
| mbloun02@peraton.com | |
| Secondary Contact | |
| Contact Name | |
| Telephone (primary) | |
| Telephone (secondary) | |
| Fax | |
Greenbelt Coordinates:
Approximate Position:
| X coordinate | [m] | 1130719.512 |
| Y coordinate | [m] | -4831350.574 |
| Z coordinate | [m] | 3994106.56 |
| Latitude | [deg] | 39.0206 N |
| Longitude | [deg] | 76.82770 W |
| Elevation | [m] | 19.184 |
| Survey Method | ||
| Date Measured | ||
| Additional Information | ||
Greenbelt News:
Local Events:
| Date | 2011-08-23 17 |
| Event | Earthquake |
| Additional Information | M5.8 about 94 miles from Greenbelt near Mineral, VA. Survey post earthquake showed no conclusive change. |
SLRMail Messages:
No SLRMail mesages found.Greenbelt Link:
Greenbelt: Site Log
Instructions and Update Site Log
You can use the hyperlinks to quickly get to the section of interest or you can scroll down to read them all.
Section: 0. Form
Section: 1. Identification of the Ranging System Reference Point (SRP)
Section: 2. Site Location Information
Section: 3. General System Information
Section: 4. Telescope Information
Section: 5. Laser System Information
Section: 6. Receiver System
Section: 7. Tracking Capabilities
Section: 8. Calibration
Section: 9. Time and Frequency Standards
Section: 10. Preprocessing Information
Section: 11. Aircraft Detection
Section: 12. Meteorological Instrumentation
Section: 13. Local Ties, Eccentricities, and Collocation Information
Section: 14. Local Events Possibly Affecting Computed Position
Section: 15. On-Site, Point of Contact Agency Information
Section: 16. Responsible Agency (if different from 15.)
Section: 17. More Information
ILRS Site and System Information Form
International Laser Ranging Service
0. Form
Prepared by (Full Name) : Van Husson
Preparer E-mail : Vhusson@peraton.com
Date Prepared : 2024-06-21
Report Type : UPDATE
Site Log Format Version : 2.0
Site Log Revision :
Back to top
1. Identification of the Ranging System Reference Point (SRP)
Site Name : Goddard Geophysical Astronomical Observatory
IERS DOMES Number : 40451M105
CDP Pad ID : 7105
Subnetwork : NASA
Description : MONUMENT
Monument Description : STANDARD NASA DISK
Monument Inscription : 7105-1981
Mark Description : Chiseled Cross
Date Installed : 1981-03-01
Date Removed :
Geologic Characteristic : CRETACEOUS SAND AND GRAVEL
Additional Information : (multiple lines)
Back to top
2. Site Location Information
City or Town : Greenbelt
State or Province : Maryland
Country : USA
Tectonic Plate : North American
Local Time (UTC +/- hours) :
Approximate Position
X coordinate [m]: 1130719.512
Y coordinate [m]: -4831350.574
Z coordinate [m]: 3994106.56
Latitude [deg]: 39.0206 N
Longitude [deg]: 76.82770 W
Elevation [m]: 19.184
Survey Method :
Date Measured :
Additional Information :
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3. General System Information
3.01 System Name : MOBLAS 7
4-Character Code : GODL
CDP System Number : 07
CDP Occupation Number : 25
Eccentricity to SRP (if Not Identical With SRP)
North [m]: -0.009 +- 0.002
East [m]: -0.032 +- 0.002
Up [m]: 3.138 +- 0.002
Date Measured : 2012-11-23
Date Installed : 1981-03-01
Date Removed :
Additional Information : Updated with 2012-11-23 survey and ITRF 2008
:
: The eccentricities in this section may not
: be current and may not contain the entire
: history. The official set of site
: eccentricities are maintained in the
: following two SINEX data bases at:
:
: https://cddis.nasa.gov/archive/
: slr/slrocc/ecc_xyz.snx
:
: and
:
: https://cddis.nasa.gov/archive/
: NULL
3.01 System Name : MOBLAS 7
4-Character Code : GODL
CDP System Number : 07
CDP Occupation Number : 25
Eccentricity to SRP (if Not Identical With SRP)
North [m]: -0.0090 +- 0.0010
East [m]: -0.0328 +- 0.0010
Up [m]: 3.1393 +- 0.0010
Date Measured : 2024-03-30
Date Installed : 1981-03-01
Date Removed :
Additional Information : Updated with 2024-03-30 survey
:
: The eccentricities in this section may not
: be current and may not contain the entire
: history. The official set of site
: eccentricities are maintained in the
: following two SINEX data bases at:
:
: https://cddis.nasa.gov/archive/
: slr/slrecc/ecc_xyz.snx
:
: and
:
: https://cddis.nasa.gov/archive/
: slr/slrecc/ecc_une.snx
Back to top
4. Telescope Information
4.01 Receiving Telescope Type : CASSEGRAIN
Aperture [m]: 0.762
Mount : AZ-EL
Date Installed :
Date Removed :
Xmitting Telescope Type : REFRACTOR
Aperture [m]: 0.163
Date Installed :
Date Removed :
Tracking Camera Type : EMCCD
Model : SI-VGA60-EM
Manufacturer : SALVADOR IMAGING (FLIR)
Field of View [deg]: 0.100
Minimum Magnitude [mag]: 12
Date Installed :
Date Removed :
Transmit/Receive Path : SEPARATE
Transmit/Receive Switch : NONE
Max Slew Rate Az [deg/s]: 20
Max Slew Rate El [deg/s]: 5
Max Used Tracking Rate Az : 5
Max Used Tracking Rate El : 3
Telescope Shelter : ROLL-BACK ROOF
Daylight Filter Type : BAR HON-0532.0/1.00-25.4 (THIN FILM)
Dayl. Filt. Bandwidth [nm]: 1
Adjustable Attenuation : RECEIVE
Adjustable Field of View :
Transmit Efficiency : 0.70
Receive Efficiency : 0.73
Date Installed : 1981-03-01
Date Removed :
Additional Information : RCV EFF 0.73 night and 0.54 day
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5. Laser System Information
5.01 Laser Type : ND:YAG
Model :
Manufacturer :
Number of Amplifiers : 1
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]: 200
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 100
Xmit Energy Adjustable : YES
Additional Information :
Pulse Width (FWHM) [ps]: 200
Max. Repetition Rate [Hz]: 10
Fullw. Beam Divergence ["]: 20
Theoretical Beam Div :
Measured Beam Div :
Method Used :
Additional Information :
Final Beam Diameter [m]: 0.093 (At Final Telescope Output)
Eyesafe : NO
Eyesafe Standard : ANSI 136.1/ANSI Z136.6
Polarization on Exit :
Laser Fire Control :
Laser Energy Monitor :
Start Diode Type :
Manufactorer :
Model :
Quantum Efficiency [%]:
Rise/Fall Time [ps]:
Date Installed :
Date Removed :
Signal Processing :
Manufacturer :
Model :
Date Installed :
Date Removed :
Additional Information :
Date Installed : 1981-03-01
Date Removed : 2007-09-12
Additional Information : Saturable laser upgrade 2007-09-12
5.02 Laser Type : ND:YAG
Model :
Manufacturer :
Number of Amplifiers : 1
Primary Wavelength [nm]: 1064
Primary Maximum Energy [mJ]: 200
Secondary Wavelength [nm]: 532
Secondary Max. Energy [mJ]: 100
Xmit Energy Adjustable : YES
Additional Information :
Pulse Width (FWHM) [ps]: 150
Max. Repetition Rate [Hz]: 10
Fullw. Beam Divergence ["]: 20
Theoretical Beam Div :
Measured Beam Div :
Method Used :
Additional Information :
Final Beam Diameter [m]: 0.093 (At Final Telescope Output)
Eyesafe : NO
Eyesafe Standard : ANSI 136.1/ANSI Z136.6
Polarization on Exit :
Laser Fire Control :
Laser Energy Monitor :
Start Diode Type :
Manufactorer :
Model :
Quantum Efficiency [%]:
Rise/Fall Time [ps]:
Date Installed :
Date Removed :
Signal Processing :
Manufacturer :
Model :
Date Installed :
Date Removed :
Additional Information :
Date Installed : 2007-09-12
Date Removed :
Additional Information :
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6. Receiver System
6.01.01 Primary Chain
Wavelength [nm]: 532
Detector Type : MCP
Manufacturer : ITT
Model : F4129F
Quantum Efficiency [%]: 17.7
Nominal Gain : 1e6
Rise Time [ps]: 350
Jitter (Single PE)[ps]: 100
Field of View Diam ["]: 360
Date Installed : 1986-03-31
Date Removed : 2003-04-30
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : CFD
Manufacturer : Tennelec
Model : TC454
Date Installed : 1986-03-31
Date Removed : 2003-04-30
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single Photoelectron to multiphotoelectron
Additional Information:
Time of Flight Observ. : INTERVAL
Manufacturer : Hewlett-Packard
Model :
Resolution [ps]: 20
Precision [ps]: 35
Date Installed : 1986-03-31
Date Removed : 2003-04-30
Additional Information :
6.01.02 Primary Chain
Wavelength [nm]: 532
Detector Type : MCP
Manufacturer : Photek
Model : PMT318
Quantum Efficiency [%]: 13.3
Nominal Gain : 1e6
Rise Time [ps]: 250
Jitter (Single PE)[ps]: 100
Field of View Diam ["]: 360
Date Installed : 2003-04-30
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : CFD
Manufacturer : Tennelec
Model : TC454
Date Installed : 1986-03-31
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multiple Photoelectrons
Additional Information:
Time of Flight Observ. : INTERVAL
Manufacturer : Hewlett-Packard
Model :
Resolution [ps]: 20
Precision [ps]: 35
Date Installed : 1986-03-31
Date Removed : 2016-07-27
Additional Information :
6.01.03 Primary Chain
Wavelength [nm]: 532
Detector Type : MCP
Manufacturer : Photek
Model : PMT318
Quantum Efficiency [%]: 13.3
Nominal Gain : 1e6
Rise Time [ps]: 250
Jitter (Single PE)[ps]: 100
Field of View Diam ["]: 6 - 360
Date Installed : 2003-04-30
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : CFD
Manufacturer : Tennelec
Model : TC454
Date Installed : 1986-03-31
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multiple Photoelectrons
Additional Information:
Time of Flight Observ. : Epoch
Manufacturer : Cybioms
Model : cybi_ETM-02
Resolution [ps]: 1
Precision [ps]: 3
Date Installed : 2016-07-27
Date Removed :
Additional Information : The HP5370B is no longer primary as of
: 2016-07-27, its data is not sent to the
: SLR data centers.
6.02.01 Secondary Chain
Wavelength [nm]: 532
Detector Type : MCP
Manufacturer : ITT
Model : F4129F
Quantum Efficiency [%]: 17.7
Nominal Gain : 1e6
Rise Time [ps]: 350
Jitter (Single PE)[ps]: 100
Field of View Diam ["]: 360
Date Installed : 1986-03-31
Date Removed : 2003-04-30
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : CFD
Manufacturer : Tennelec
Model : TC454
Date Installed : 1986-03-31
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photons
Additional Information:
Time of Flight Observ. : INTERVAL
Manufacturer : Hewlett-Packard
Model :
Resolution [ps]: 20
Precision [ps]: 35
Date Installed : 1986-03-31
Date Removed :
Additional Information : High sensivity laser receiver configuration,
: installed 1996-05-19. Everything is the same
: as the primary chain except the discriminator
: threshold has been lowered to accept single
: photons and the signal is amplified with
: 24 dB of gain
6.02.02 Secondary Chain
Wavelength [nm]: 532
Detector Type : MCP + Amplifier
Manufacturer : Photek + B&H Electronics
Model : PMT318 + DC3000H20
Quantum Efficiency [%]: 13.3
Nominal Gain : 1e7
Rise Time [ps]: 250
Jitter (Single PE)[ps]: 100
Field of View Diam ["]: 6 - 360
Date Installed : 2003-04-30
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing : CFD
Manufacturer : Tennelec
Model : TC454
Date Installed : 1986-03-31
Date Removed :
Amplitude Measurement : YES
Return-Rate Controlled: YES
Mode of Operation : Single to Multi Photoelectrons
Additional Information:
Time of Flight Observ. : INTERVAL
Manufacturer : Hewlett-Packard
Model : 5370B
Resolution [ps]: 20
Precision [ps]: 35
Date Installed : 1986-03-31
Date Removed :
Additional Information : High sensivity laser receiver configuration,
: installed 1996-05-19.
6.03.01 Tertiary Chain
Wavelength [nm]:
Detector Type :
Manufacturer :
Model :
Quantum Efficiency [%]:
Nominal Gain :
Rise Time [ps]:
Jitter (Single PE)[ps]:
Field of View Diam ["]:
Date Installed :
Date Removed :
Amplifier Type :
Manufacturer :
Model :
Gain :
Bandwidth :
Date Installed :
Date Removed :
Additional Information:
Signal Processing :
Manufacturer :
Model :
Date Installed :
Date Removed :
Amplitude Measurement :
Return-Rate Controlled:
Mode of Operation :
Additional Information:
Time of Flight Observ. :
Manufacturer :
Model :
Resolution [ps]:
Precision [ps]:
Date Installed :
Date Removed :
Additional Information :
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7. Tracking Capabilities
7.01 Satellites
Very Low Alt (<400 km) : YES
Low Altitude (400-2000) : YES
LAGEOS/LARES : YES
GLONASS : YES
Etalon : YES
GNSS : NIGHT
Geosynchronous :
Moon : NO
Ave. Pass Switch Time [s]: 60
Average values for LAGEOS
Single Shot RMS [mm]: 9
# of Obs per NP : 25
Use of Semi-trains : NO
# of Semi-train Tracks : N.A.
Range Gate Width [ns]: 2000
Beam Pointing Accuracy ["]: 3.6
Angle Encoder Resolution["]: 0.6
Min. Tracking Elev. [deg]: 10
Laser Polarization @emitter:
Operation
Months per Year : 12
Days per Week : 5
Hours per Day : 24
Staff per Shift : 1
System Shared With : SLR ENGINEERING
Time Allocated to SLR [%]: 100
Remotely Controllable : NO
Tracking Restrictions
Go/No-go flag :
Satellite Verification :
Date Verified :
Maximum elevation :
Satellite Verification :
Date Verified :
Pass segments :
Satellite Verification :
Date Verified :
Schedule segments :
Satellite Verification :
Date Verified :
Maximum laser power limit:
Satellite Verification :
Date Verified :
Date First Applicable : 1996-12-01 HH:MM UT
Date Last Applicable :
Additional Information : Station is not available for ranging
: on US holidays. Single Shot RMS 5-11.
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8. Calibration
8.01 Calibration Type : PRE+POST
Target Location : EXTERNAL
Target Type : CORNER CUBE
Target Structure : CONCRETE PIER
Number of Targets :
Target Distance(s) [m]: 170
Date Measured : 1998-12-12
Accuracy [mm]: 2
Verification : first order survey and ranging to multiple
: ground targets
Return-Rate Controlled : YES
Eye-Safe Method :
Additional Information : Maximum interval between calibrations = 2 hr
Mode of Operation : SINGLE/MULTI PHOTON
Calibration performed : 2
Single Shot RMS [mm]: 1.5 - 3.5
Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA
Edit Criterion 2nd Chain : ITERATIVE 3.0 SIGMA
Application of Cal Data : AVERAGE
Date Installed : 1990-07-24
Date Removed :
Additional Information :
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9. Time and Frequency Standards
9.01.01 Frequency Standard Type : Cesium
Model : 5061A
Manufacturer : HP
Short Term Stab. [e-12]: 10
Long Term Stab. [e-12]: 0.1
Time Reference : GPS
Synchronization : GPS
Epoch Accuracy [ns]: 100
Date Installed :
Date Removed : 1999-05-23
Additional Information :
9.01.02 Frequency Standard Type : GPS Steered Rubidium
Model : XL-DC 151-358-108-2
Manufacturer : Microsemi (Symmetricom, TrueTime)
Short Term Stab. [e-12]: 1000
Long Term Stab. [e-12]: 3
Time Reference : GPS
Synchronization : GPS
Epoch Accuracy [ns]: 150
Date Installed : 1999-05-23
Date Removed : 2019-08-31
Additional Information : Rubidium Reference - Stanford PRS10
9.01.03 Frequency Standard Type : GPS Steered Rubidium
Model : FS740
Manufacturer : Stanford Research
Short Term Stab. [e-12]: 1000
Long Term Stab. [e-12]: 3
Time Reference : GPS
Synchronization : GPS
Epoch Accuracy [ns]: 150
Date Installed : 2019-08-31
Date Removed :
Additional Information :
9.02.01 GNSS Timing Rcvr Model : XL-DC 151-358-108-2
Manufacturer : Microsemi (Symmetricom, TrueTime)
Date Installed : 1999-03-04
Date Removed :
Additional Information :
9.02.02 GNSS Timing Rcvr Model :
Manufacturer : CNS CLOCK
Date Installed : 1999-03-04
Date Removed :
Additional Information : CNS clock used for comparisons
9.03.01 One-way System Calibration
Date performed :
Direction Calibrated :
Additional Information :
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10. Preprocessing Information
10.01 On-site NP Generation : YES
Data Screening : IRV+POLYNOMIAL
Return-Rate Rejection :
Edit Criterion 1st Chain : ITERATIVE 3 SIGMA
Edit Criterion 2nd Chain : ITERATIVE 3 SIGMA
Upload interval : HOURLY
Date First Applicable : 1991-12-09 HH:MM UT
Date Last Applicable : 2001-02-08 HH:MM UT
Additional Information :
10.02 On-site NP Generation : YES
Data Screening : (O-C)POLYNOMIAL
Return-Rate Rejection :
Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA
Edit Criterion 2nd Chain : ITERATIVE 3 SIGMA
Upload interval : HOURLY
Date First Applicable : 2001-02-08 HH:MM UT
Date Last Applicable : 2012-08-01 HH:MM UT
Additional Information : Generic Normal Processing Version 2.7.3
: installed 2001-02-08.
10.03 On-site NP Generation : YES
Data Screening : (O-C)POLYNOMIAL
Return-Rate Rejection :
Edit Criterion 1st Chain : ITERATIVE 3.0 SIGMA
Edit Criterion 2nd Chain : ITERATIVE 3 SIGMA
Upload interval : HOURLY
Date First Applicable : 2012-08-01 HH:MM UT
Date Last Applicable :
Additional Information : Generic Normal Point Processing
: Version 2.7.4 installed 2012-08-01
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11. Aircraft Detection
11.01 Detection Type : RADAR
Manufacturer/Provider :
Automatic Laser Shutoff :
Alarms Recorded :
Hazard Distance [km]:
Date Installed : 1994-08-31
Date Removed :
Additional Information :
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12. Meteorological Instrumentation
12.01.01 Pressure Sensor Model : MET3
Manufacturer : Paroscientific
Recording Interval : PER PULSE
Accuracy [mbar]: 0.1
Height Diff to SRP [m]: 0
Distance from SRP [m]:
Date Installed : 2000-03-30 HH:MM UT
Calibration Interval : biennial
Date Removed : 2011-04-11 HH:MM UT
Additional Information :
12.01.02 Pressure Sensor Model : MET4
Manufacturer : Paroscientific
Recording Interval : PER PULSE
Accuracy [mbar]: 0.08
Height Diff to SRP [m]: 0
Distance from SRP [m]:
Date Installed : 2011-04-11 HH:MM UT
Calibration Interval : biennial
Date Removed :
Additional Information : Updated June 2016 to reflect aligned to the
: center of the elevation axis
12.02.01 Temp Sensor Model : MET3
Manufacturer : Paroscientific
Recording Interval : PER PULSE
Accuracy [deg C]: 0.5
Date Installed : 2000-03-30 HH:MM UT
Calibration Interval : biennial
Date Removed : 2011-04-11 HH:MM UT
Additional Information :
12.02.02 Temp Sensor Model : MET4
Manufacturer : Paroscientific
Recording Interval : PER PULSE
Accuracy [deg C]: 0.2
Date Installed : 2011-04-11 HH:MM UT
Calibration Interval : biennial
Date Removed :
Additional Information :
12.03.01 Humidity Sensor Model : MET3
Manufacturer : Paroscientific
Recording Interval : PER PASS
Accuracy [% rel h]: 2
Date Installed : 2000-03-30 HH:MM UT
Calibration Interval : biennial
Date Removed : 2011-04-11 HH:MM UT
Additional Information :
12.03.02 Humidity Sensor Model : MET4
Manufacturer : Paroscientific
Recording Interval : PER PASS
Accuracy [% rel h]: 2
Date Installed : 2011-04-11 HH:MM UT
Calibration Interval : biennial
Date Removed :
Additional Information :
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13. Local Ties, Eccentricities, and Collocation Information
13.01 Collocated Permanent Geodetic Systems
13.01.01.01 GNSS : IGS
Date Installed : 1993-04-02
Date Removed :
Additional Info :
13.01.01.02 GNSS : NO
Date Installed :
Date Removed :
Additional Info :
13.01.02.01 DORIS : IDS
Date Installed : 2000-06-29
Date Removed :
Additional Info :
13.01.03.01 PRARE : NO
Date Installed : 1995-05-01
Date Removed :
Additional Info :
13.01.04.01 VLBI : IVS
Date Installed : 1993-04-01
Date Removed :
Additional Info :
13.01.05.01 Gravimeter : NO
Date Installed :
Date Removed :
Additional Info :
13.01.06.01 Other SLR :
Date Installed :
Date Removed :
Additional Info :
13.02.01.01 Local Ties from the SRP to Other Monuments or Systems on Site
Monument Name :
Instrumentation Type :
Instrumentation Status :
DOMES Number :
CDP Number :
Differential Components (ITRS)
dx [m]:
dy [m]:
dz [m]:
Date Measured :
Determined by :
Date Installed :
Date Removed :
Additional Information :
13.03.01.01 Eccentricities Between Other Monuments on Site
From: Monument Name : CDP Station 7105
DOMES Number : 40451M105
CDP Number : 7105
To: Monument Name : North GEOS Pier
DOMES Number : 40451M110
CDP Number :
Differential Components (ITRS)
dx [m]: 11.6967 +- 0.002
dy [m]: 27.9696 +- 0.002
dz [m]: 29.9564 +- 0.002
Date Measured : 1998-12-12
Determined by : HTSI
Additional Information : For more information about
: contact Jeff Dorman at
: jeffrey.l.dorman@nasa.gov
13.03.[0-9][0-9].[0-9][0-9] Eccentricities Between Other Monuments on Site
From: Monument Name : CDP Station 7105
DOMES Number : 40451M105
CDP Number : 7105
To: Monument Name : CDP Station 7125
DOMES Number : 40451M114
CDP Number : 7125
Differential Components (ITRS)
dx [m]: 26.0377 +- 0.002
dy [m]: -17.4605 +- 0.002
dz [m]: -29.3887 +- 0.002
Date Measured : 1998-12-12
Determined by : HTSI
Additional Information : For more information about
: contact Jeff Dorman at
: jeffrey.l.dorman@nasa.gov
13.03.[0-9][0-9].[0-9][0-9] Eccentricities Between Other Monuments on Site
From: Monument Name : CDP Station 7105
DOMES Number : 40451M105
CDP Number : 7105
To: Monument Name : CDP Station 7920
DOMES Number : 40451M117
CDP Number : 7920
Differential Components (ITRS)
dx [m]: 22.1812 +- 0.002
dy [m]: -19.2155 +- 0.002
dz [m]: -30.4096 +- 0.002
Date Measured : 1998-12-12
Determined by : HTSI
Additional Information : For more information about
: contact Jeff Dorman at
: jeffrey.l.dorman@nasa.gov
13.03.[0-9][0-9].[0-9][0-9] Eccentricities Between Other Monuments on Site
From: Monument Name : CDP Station 7105
DOMES Number : 40451M105
CDP Number : 7105
To: Monument Name : CDP Station 7130
DOMES Number : 40451M116
CDP Number : 7130
Differential Components (ITRS)
dx [m]: 15.5755 +- 0.002
dy [m]: 25.9070 +- 0.002
dz [m]: 25.8559 +- 0.002
Date Measured : 1998-12-12
Determined by : HTSI
Additional Information : For more information about
: contact Jeff Dorman at
: jeffrey.l.dorman@nasa.gov
13.03.[0-9][0-9].[0-9][0-9] Eccentricities Between Other Monuments on Site
From: Monument Name : CDP Station 7105
DOMES Number : 40451M105
CDP Number : 7105
To: Monument Name : CDP Station 7918
DOMES Number : 40451M120
CDP Number : 7918
Differential Components (ITRS)
dx [m]: -14.4196 +- 0.002
dy [m]: 5.1378 +- 0.002
dz [m]: 9.4549 +- 0.002
Date Measured : 1998-12-12
Determined by : HTSI
Additional Information : For more information about
: contact Jeff Dorman at
: jeffrey.l.dorman@nasa.gov
13.03.[0-9][0-9].[0-9][0-9] Eccentricities Between Other Monuments on Site
From: Monument Name : CDP Station 7105
DOMES Number : 40451M105
CDP Number : 7105
To: Monument Name : JPL 4006 (GPS East)
DOMES Number : 40451M123
CDP Number : 4006
Differential Components (ITRS)
dx [m]: 54.2314 +- 0.002
dy [m]: 97.0090 +- 0.002
dz [m]: 93.8623 +- 0.002
Date Measured : 1998-12-12
Determined by : HTSI
Additional Information : IGS site code is GODE.
: For more information about
: contact Jeff Dorman at
: jeffrey.l.dorman@nasa.gov
13.03.[0-9][0-9].[0-9][0-9] Eccentricities Between Other Monuments on Site
From: Monument Name : CDP Station 7105
DOMES Number : 40451M105
CDP Number : 7105
To: Monument Name : SGP 7108
DOMES Number : 40451M125
CDP Number : 7108
Differential Components (ITRS)
dx [m]: 75.1266 +- 0.002
dy [m]: 116.7620 +- 0.002
dz [m]: 110.5077 +- 0.002
Date Measured : 1998-12-12
Determined by : HTSI
Additional Information : 7108 is the Mobile VLBI (MV)-3 marker.
: For more information about
: contact Jeff Dorman at
: jeffrey.l.dorman@nasa.gov
13.03.[0-9][0-9].[0-9][0-9] Eccentricities Between Other Monuments on Site
From: Monument Name : CDP Station 7105
DOMES Number : 40451M105
CDP Number : 7105
To: Monument Name : JPL 4005 (GPS West)
DOMES Number : 40451M124
CDP Number : 4005
Differential Components (ITRS)
dx [m]: 33.3058 +- 0.002
dy [m]: 88.3919 +- 0.002
dz [m]: 88.9674 +- 0.002
Date Measured : 1998-12-12
Determined by : HTSI
Additional Information : IGS site code is GODW.
: For more information about
: contact Jeff Dorman at
: jeffrey.l.dorman@nasa.gov
13.03.[0-9][0-9].[0-9][0-9] Eccentricities Between Other Monuments on Site
From: Monument Name : CDP Station 7105
DOMES Number : 40451M105
CDP Number : 7105
To: Monument Name : MV-3 SRP (VLBI)
DOMES Number : 40451M125
CDP Number : 7108
Differential Components (ITRS)
dx [m]: 75.9012 +- 0.002
dy [m]: 113.5125 +- 0.002
dz [m]: 113.2697 +- 0.002
Date Measured : 1998-12-12
Determined by : HTSI
Additional Information : This is the system reference point
: for MV-3. For more information about
: contact Jeff Dorman at
: jeffrey.l.dorman@nasa.gov
13.03.[0-9][0-9].[0-9][0-9] Eccentricities Between Other Monuments on Site
From: Monument Name : CDP Station 7105
DOMES Number : 40451M105
CDP Number : 7105
To: Monument Name : GREB (DORIS)
DOMES Number : 40451S176
CDP Number : N.A.
Differential Components (ITRS)
dx [m]: -8.343 +- 0.002
dy [m]: -41.346 +- 0.002
dz [m]: -45.362 +- 0.002
Date Measured : 2000-01-01
Determined by : HTSI
Additional Information : For more information about
: contact Jeff Dorman at
: jeffrey.l.dorman@nasa.gov
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14. Local Events Possibly Affecting Computed Position
14.01 Date : 2011-08-23 17:51 UT
Event : Earthquake
Additional Information : M5.8 about 94 miles from Greenbelt
: near Mineral, VA. Survey post earthquake
: showed no conclusive change.
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15. On-Site, Point of Contact Agency Information
Agency : Peraton
Mailing Address : NASA SLR
: Attn: Christopher Szwec
: 7855 Walker Drive
: Greenbelt, MD 20770
Website :
Primary Contact
Contact Name : Maceo Blount
Telephone (primary) : 301-286-5050
Telephone (secondary) : 301-310-1237
Fax : 301-286-1636
E-mail : mbloun02@peraton.com
Secondary Contact
Contact Name : Christopher Szwec
Telephone (primary) : 301-823-2609
Telephone (secondary) :
Fax : 301-823-2501
E-mail : cszwec@peraton.com
Tertiary Contact
Contact Name :
Telephone (primary) :
Telephone (secondary) :
Fax :
E-mail :
Additional Information :
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16. Responsible Agency (if different from 15.)
Agency : NASA
Mailing Address : Goddard Space Flight Center, Code 61A
: 8800 Greenbelt Road
: Greenbelt, MD 20771 USA
Primary Contact
Contact Name : Jeffrey Dorman
Telephone (primary) : 301-286-1128
Telephone (secondary) :
Fax :
E-mail : jeffrey.dorman@nasa.gov
Secondary Contact
Contact Name : Stephen Merkowitz
Telephone (primary) : 301-286-9412
Telephone (secondary) :
Fax :
E-mail : stephen.m.merkowitz@nasa.gov
Additional Information :
Back to top
17. More Information
URL for More Information : http://cddis.gsfc.nasa.gov/ggao/index.html
Hardcopy on File
Site Map : YES
Site Diagram : YES
Horizon Mask : YES
Monument Description : YES
Site Pictures : YES
Additional Information :
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Greenbelt: Meteorological data
Note: For a larger view, please select a thumbnail.
| Type | Since 2012 | Monthly Average Offset |
|---|---|---|
| Temperature |  |
 |
Humidity |  |
 |
| Pressure |  |
 |
Greenbelt: LAGEOS performance
Note: For a larger view, please select a thumbnail.
| type | Since 2012 | Monthly average |
|---|---|---|
| RMS |  |
 |
| Cal RMS |  |
|
| Sys Dly |  |
 |
| Obs per NPT |
 |
 |
| FR Obs per Pass |
 |
 |
Greenbelt: 7-day tracking information
Click on a plot to view a larger image.
| Days ago | |
|---|---|
| 1 |  |
| 2 |  |
| 3 |  |
| 4 |  |
| 5 |  |
| 6 |  |
| 7 |  |
Greenbelt: Satellite Information (as a function of local time and satellite range)
Click on a plot to view a larger image.
| satellite | local time | range | ||
|---|---|---|---|---|
| npt rms | numFR /npt | npt rms | numFR /npt |
|
| Ajisai 30 sec |
 |
 |
 |
 |
| Cryosat-2 15 sec |
 |
 |
 |
 |
| Etalon-1 300 sec |
 |
 |
 |
 |
| Etalon-2 300 sec |
 |
 |
 |
 |
| Galileo-102 300 sec |
 |
 |
|
 |
| Galileo-202 300 sec |
 |
 |
|
 |
| Galileo-209 300 sec |
 |
 |
|
 |
| Galileo-210 300 sec |
 |
 |
|
 |
| GLONASS-131 300 sec |
 |
 |
 |
 |
| GLONASS-134 300 sec |
 |
 |
 |
 |
| GLONASS-138 300 sec |
 |
 |
 |
 |
| GLONASS-139 300 sec |
 |
 |
 |
 |
| GRACE-FO-1 5 sec |
 |
 |
 |
 |
| GRACE-FO-2 5 sec |
 |
 |
 |
 |
| Jason-3 15 sec |
 |
 |
 |
 |
| LAGEOS-1 120 sec |
 |
 |
 |
 |
| LAGEOS-2 120 sec |
 |
 |
 |
 |
| LARES 30 sec |
 |
 |
 |
 |
| Starlette 30 sec |
 |
 |
 |
 |
| Stella 30 sec |
 |
 |
 |
 |
| Swarm-A 5 sec |
 |
 |
 |
 |
| Swarm-B 5 sec |
 |
 |
 |
 |
| Swarm-C 5 sec |
 |
 |
 |
 |
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- Web Curator: Lori J. Tyahla
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