A-train

A-train
constellation
satellites


This page contains philatelic information on the A-train constellation satellites. Catalog numbers, years of issue, and notes on the satellites featured are given when available. If readers know of additional information or images, please contact the authors using the e-mail addresses at the bottom of this page.

There are 5 satellites in the A-train constellation: EOS-Aqua, EOS-Aura1, CloudSat, CALIPSO, and PARASOL. A 6th satellite, OCO, failed upon launch in 2009. A 7th satellite, Glory, failed upon launch in 2011.

CloudSat is also known as ESSP-4, one of the NASA ESSP-series satellites.
CALIPSO is also known as ESSP-3, one of the NASA ESSP-series satellites.
OCO is also known as ESSP-5, one of the NASA ESSP-series satellites.

Launch information
(found elsewhere)
Launch covers
(including anniversary-of-launch covers, and launch-related event covers)
(farther below)
Other postal items
(stamps, souvenir sheets, aerogrammes, postal cards, etc.)
(immediately below)
EOS-series EOS-series EOS-series
EOS (on other than EOS launch covers)
CloudSat CloudSat CloudSat
CALIPSO (France) CALIPSO (France) CALIPSO (France)
PARASOL (France) PARASOL (France) PARASOL (France)
OCO OCO OCO
Glory Glory Glory


Below is a list of A-train constellation postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.).

CountryCatalog NumberType of ItemYear of IssueNotes on Content
Earth Observing System (EOS) Aqua and Aura1 (and Terra)2
Guinea RepublicBL899A
BL899B
In (upper-left) margin of MS2 (Mi4186A-4187A)
In (upper-left) margin of imperforate MS2 (Mi4186B-4187B)
2005EOS-Terra2
Guinea RepublicBL899B fdcImperforate MS2 on FDC
Guinea RepublicMi5866A-5871A_ms6
Mi5866B-5871B_ms6
In (upper-right) margin of MS6 (Mi5866A-5871A)
In (upper-right) margin of imperforate MS6 (Mi5866B-5871B)
2008EOS-"Aura"1
Iceland1152 (BL45)In (upper-right) margin of SS12008EOS-Terra2
Iceland1152 fdcSS1 and cachet on FDC
Malagasy Republic1047b (BL178)
i1047b
In (lower-left) margin of SS1 (1047)
In (lower-left) margin of imperforate SS1 (i1047)
1992(early-design) EOS-Terra2
Maldive Islands2895c (Mi4542)From MS4 (2895 (a-d)) (Mi4540-4543)
From imperforate MS4 (i2895 (a-d))
2006EOS-"Aqua"
Maldive Islands2895d (Mi4543)EOS-"Aura"1
Sierra Leone2871d (Mi4976)One of MS4 (2871 (a-d)) (Mi4973-4976)
One of imperforate MS4 (i2871 (a-d))
2006EOS-"Aqua" and EOS-"Aura"1 (in A-Train)
Tanzania2444 (BL592)SS12007EOS-Aqua, EOS-Aura1 (implied)
United StatesNoneCancel on cover2008EOS-Aura1 (in text)
CLOUD SATellite (CloudSat)
Antigua and Barbuda2926 (BL633)In (upper-left) margin of SS12006"CloudSat"
Guyana3931 (BL804)
i3931
In (upper-right) margin of SS1
In (upper-right) margin of imperforate SS1
2006"CloudSat"
Maldive Islands2895b (Mi4541)One of MS4 (2895 (a-d)) (Mi4540-4543)
One of imperforate MS4 (i2895 (a-d))
2006"CloudSat"
St. Thomas and Prince IslandsUnknown d (Mi?)
Unknown id
One of MS4 (a-d)
One of imperforate MS4 (a-d)
2005CloudSat
St. Thomas and Prince IslandsUnknown fdc
Unknown ims fdc
On MS4 and cachet on FDC
On imperforate MS4 and cachet on FDC
St. Thomas and Prince IslandsUnknown ms (Mi?)
Unknown ims
In (upper-left) margin of MS9 (a-i)
In (upper-left) margin of imperforate MS9 (a-i)
2006CloudSat
St. Thomas and Prince IslandsUnknown fdc
Unknown ims fdc
MS9 on FDC
Imperforate MS9 on FDC
Sierra Leone2871a (Mi4973)On three stamps and in (upper-left) margin of MS4 (2871 (a-d)) (Mi4973-4976)
On two stamps and in (upper-right) margin of imperforate MS4 (i2871 (a-d))
2006CloudSat launch
Sierra Leone2871c (Mi4975)"CloudSat"
Sierra Leone2871d (Mi4596)"CloudSat" (in A-Train)
Tanzania2444 (BL592)SS12007CloudSat
Tuvalu1013 (BL133)In (upper-left) margin of SS12006"CloudSat" (in text and partial depiction)
Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) (France)
Antigua and Barbuda2926 (BL633)SS12006"CALIPSO"
Guyana3931 (BL804)
i3931
SS1
Imperforate SS1
2006"CALIPSO"
Maldive Islands2895a (Mi4540)One of MS4 (2895 (a-d)) (Mi4540-4543)
One of imperforate MS4 (i2895 (a-d))
2006"CALIPSO"
St. Thomas and Prince IslandsUnknown c (Mi?)
Unknown ic
One of MS4 (a-d)
One of imperforate MS4 (a-d)
2005CALIPSO
St. Thomas and Prince IslandsUnknown fdc
Unknown ims fdc
MS4 and cachet on FDC
Imperforate MS4 and cachet on FDC
St. Thomas and Prince IslandsUnknown fdc
Unknown ims fdc
Cachet on FDC
Cachet on imperforate FDC
2006CALIPSO
Sierra Leone2871a (Mi4973)On three stamps and in (upper-right) margin of MS4 (2871 (a-d)) (Mi4973-4976)
On two stamps and in (upper-right) margin of imperforate MS4 (i2871 (a-d))
2006CALIPSO launch
Sierra Leone2871b (Mi4974)"CALIPSO"
Sierra Leone2871d (Mi4976)"CALIPSO" (in A-train)
Tanzania2444 (BL592)SS12007CALIPSO
Togo2035f (Mi3321)
i2035f
One of MS6 (2035 (a-f)) (Mi3316-3321)
One of imperforate MS6 (i2035 (a-f))
2006"CALIPSO"
Tuvalu1013 (BL133)On stamp and in (right) margin of SS12006"CALIPSO"
Polarization and Anisotropy of Reflectances for Atmospheric Science coupled with Observations from a Lidar (PARASOL) (France)
Sierra Leone2871d (Mi4976)One of MS4 (2871 (a-d)) (Mi4973-4976)
One of imperforate MS4 (i2871 (a-d))
2006"PARASOL" (in A-Train)
Tanzania2444 (BL592)SS12007PARASOL
Orbiting Carbon Observatory (OCO)
Sierra Leone2871d (Mi4976)One of MS4 (2871 (a-d)) (Mi4973-4976)
One of imperforate MS4 (i2871 (a-d))
2006"OCO"-1 (in A-Train)
Glory [failed]
No (non-launch cover) postal items found

1The USA EOS-Aura from 2004 should not be confused with the French D-series satellite (D-2B / Aura) from 1975, which goes by the same name.
2EOS-Terra is the "morning" complement to the "afternoon" EOS-Aqua, therefore it is not part of the A-train satellite constellation.


Below is a list of A-train constellation launch covers (including anniversary-of-launch covers, and launch-related event covers).

CountryCancel DateCancel LocationType of ItemNotes on Content
Earth Observing System (EOS)
1999-12-18: EOS-Terra2
United States1999-12-18Vandenberg AFB, Lompoc CA(Printed) cachet on coverEOS-Terra launch2
United States1999-12-18Vandenberg AFB, Lompoc CA(Printed) cachet (different) on coverEOS-Terra launch2
United States1999-12-18Lompoc CA, Vandenberg AFB(JPL Stamp Club) cachet on coverEOS-Terra launch2
United States1999-12-18Pasadena CA(JPL Stamp Club) cachet on coverEOS-Terra launch2
2002-05-04: EOS-Aqua
United States2002-05-04Vandenberg AFB, Lompoc CA(JPL Stamp Club) cachet on coverEOS-Aqua launch
United States2002-05-04Pasadena CA(JPL Stamp Club) cachet on coverEOS-Aqua launch
2004-07-15: EOS-Aura1
United States2004-07-15Vandenberg AFB, Lompoc CA(Printed) cachet on coverEOS-Aura launch
United States2004-07-15Vandenberg AFB, Lompoc CA(Printed) cachet (different) on coverEOS-Aura launch
United States2004-07-15Vandenberg AFB, Lompoc CA(SCP sticker) cachet on coverEOS-Aura launch
United States2004-07-15Pasadena CA(JPL rubber-stamp) cachet on coverEOS-Aura launch
United States2004-07-15Pasadena CA(JPL Stamp Club) cachet on coverEOS-Aura launch
EOS (on other than EOS launch covers)
French Guiana2011-09-21Kourou(Association Philatélique du C.E. SPS) cachet on Arabsat-5C and SES-2 launch cover, also back"satellite [EOS] TERRA"
2006-04-28: CLOUD SATellite (CloudSat) (and CALIPSO)
United States2006-04-28Vandenberg AFB, CA(Printed) cachet on coverCloudSat (and CALIPSO) launch
United States2006-04-28Pasadena CA(JPL Stamp Club) cachet on coverCloudSat (and CALIPSO) launch
United States2006-04-28Vandenberg AFB, CA(JPL Stamp Club) cachet on coverCloudSat (and CALIPSO) launch
United States2006-04-28Pasadena CA(JPL rubber-stamp) cachet on coverCloudSat (and CALIPSO) launch
2006-04-28: Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) (France) (and CloudSat)
United States2006-04-28Vandenberg AFB, CA(Printed) cachet on coverCALIPSO (and CloudSat) launch
United States2006-04-28Pasadena CA(JPL Stamp Club) cachet on coverCALIPSO (and CloudSat) launch
United States2006-04-28Vandenberg AFB, CA(JPL Stamp Club) cachet on coverCALIPSO (and CloudSat) launch
United States2006-04-28Pasadena CA(JPL rubber-stamp) cachet on coverCALIPSO (and CloudSat) launch
2004-12-18: Polarization and Anisotropy of Reflectances for Atmospheric Science coupled with Observations from a Lidar (PARASOL) (France) (and Helios-2A and Essaim-1/4 and Nanosat-01)
French Southern and Antarctic Territories2004-12-18Port aux Français, Îles Kerguelen(Printed) cachet on coverPARASOL launch
French Southern and Antarctic Territories2004-12-18Port aux Français, Îles Kerguelen(Printed) cachet (different) on coverPARASOL launch
Orbiting Carbon Observatory (OCO)
2009-02-24: OCO-1 [failed]
United States2009-02-24Vandenberg AFB, Lompoc CA(Mission 57) cachet on cover, also backOCO-1 launch [failed]
United States2009-02-24Pasadena CA(JPL Stamp Club) cachet on coverOCO-1 launch [failed]
2014-07-02: OCO-2
United States2014-07-02Vandenberg AFB(Lollini) cachet on coverOCO-2 launch
United States2014-07-02Vandenberg AFB(Printed) cachet on coverOCO-2 launch
2011-03-04: Glory (and Hermes and KySat-1 and E1P) [failed]
United States2011-03-04Vandenberg AFB, CA(Lollini) cachet on coverGlory launch [failed]
United States2011-03-04Vandenberg AFB, CA(Mission 57) cachet on cover, also backGlory launch [failed]; "The A-Train currently includes Aqua, Aura, CALIPSO and Cloudsat" (in text on cover back)
United States2011-03-04Vandenberg AFB, CA(Mission 57) cachet on cover, also backGlory launch (but Hermes and KySat-1 and E1P depicted) [failed]
United States2011-03-04Vandenberg Contract Station, Lompoc CA(RES&C) cachet on coverGlory launch [failed]


1The USA EOS-Aura from 2004 should not be confused with the French D-series satellite (D-2B / Aura) from 1975, which goes by the same name.
2EOS-Terra is the "morning" complement to the "afternoon" EOS-Aqua, but it is not part of the A-train satellite constellation.


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Updated: 2019-08-12