MS-T5 / Sakigake

(Earlier)
Planet-series satellites
(cometary: MS-T5 — Planet-A)

Planet-A / Suisei
MS-T5 / SakigakePlanet-A / Suisei

This page contains philatelic information on the (Earlier) Planet-series (cometary) 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.

While MS-T5 / Sakigake items are found on this page, MS-T1 — MS-T4 items are found on the Tansei page.

Many of the items in the list below were issued for Halley's Comet. Although a list of Halley's Comet items is not provided, a number of those items include images of Edmund Halley (1656 - 1742).

Launch information
(found elsewhere)
Launch covers
(including anniversary-of-launch covers, and launch-related event covers)
(farther below or elsewhere)
Other postal items
(stamps, souvenir sheets, aerogrammes, postal cards, etc.)
(immediately below or elsewhere)
(Earlier) Planet
(Japanese cometary)
(Earlier) Planet
(Japanese cometary)
(Earlier) Planet
(Japanese cometary)
Planet (on other than Planet launch covers)
(Later) Planet
(Japanese planetary)
(Later) Planet
(Japanese planetary)
(Later) Planet
(Japanese planetary)


Below is a list of (Earlier) Planet-series (cometary) satellite postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.).

CountryCatalog NumberType of ItemYear of IssueNotes on Content
(Earlier) Planet (Japanese cometary)
Aitutaki383 (Mi571)One of pair (383a (382-383))1985"Planet-A" / Suisei
Aitutaki385 (Mi573)One of pair (385a (384-385))
Belize812a (Mi873)One of strip of 3 (812 (a-c)) (Mi873-875), or three of MS9 (812d (3x (812 (a-c))))1986(poorly-drawn) "Planet-A" / Suisei
Belize812a-c+813a-c fdcOne of six stamps on FDC
BeninUnknown ms (Mi none)MS2 (a-b) [known illegal issue]2015MS-T5 / "Sakigake" (in upper-right margin); Planet-A / Suisei (in both stamps, not "Sakigake" as in the stamps' text)
BeninUnknown ss (BL none)SS1 [known illegal issue]MS-T5 / "Sakigake" (in the stamp and margin)
Bulgaria3153 (BL162)In (upper-left) margin of MS4 (3153 (a-d))1986"Planet-1" (Planet-A / Suisei depicted)
Bulgaria3153 fdcMS4 on FDC
Cambodia708 (Mi786)1986"Planet"-A / Suisei
Central African RepublicC279_stamp (Mi867A)
iC279_stamp (Mi867B)

Imperforate
1982Planet-A / Suisei
Central African RepublicC279 (BL201A)
iC279 (BL201B)
On stamp of SS1 (Mi867A)
On stamp of imperforate SS1 (Mi867B)
Central African Republic660 (Mi1039A)1984Planet-A / Suisei
Central African Republic660a (BL287A)On stamp of SS1 (660)
Comoro IslandsC162 (Mi776)
iC162

Imperforate
1986"Planet-A" / Suisei
Comoro IslandsC162a (BL?)Imperforate SS1 (iC162)
Comoro IslandsB4e (Mi858A)
iB4e (Mi858B)
One of MS8 (B4 (a-h)) (Mi854A-861A)
One of imperforate MS8 (iB4 (a-h)) (Mi854B-861B)
1988"Planet-A" / Suisei
Comoro IslandsB4e ds (BL267A)
iB4e ds (BL267B)
Deluxe sheet (B4e)
Imperforate deluxe sheet (iB4e)
Comoro IslandsB4g (Mi860A)
iB4g (Mi860B)
One of MS8 (B4 (a-h)) (Mi854A-861A)
One of imperforate MS8 (iB4 (a-h)) (Mi854B-861B)
Comoro IslandsB4g ds (BL269A)
iB4g ds (BL269B)
Deluxe sheet (B4g)
Imperforate deluxe sheet (iB4g)
Comoro Islands796S (Mi1093)C162 overprinted new value1992-1995"Planet-A" / Suisei
Comoro Islands804H (Mi1108)C162 overprinted new value (different)1992-1995"Planet-A" / Suisei
Comoro Islands816Pu (Mi1129)One of pair (816P (t-u)) (Mi1125+1129), B4e overprinted with a silver bar to remove the surtax1996"Planet-A" / Suisei
Comoro Islands816Ry (Mi1131)One of pair (816R (x-y)) (Mi1127+1131), B4g overprinted with a silver bar to remove the surtax
Congo RepublicUnknown ss (BL none)In (lower-left) margin of SS1 [known illegal issue]2016Planet-A / "Suisei"
Djibouti610a (BL120A)
i610a (BL120B)
In (lower-right) margin of SS1 (610), also annotated
In (lower-right) margin of imperforate SS1 (i610)
1986Two depictions of Planet-A / Suisei; (the design was probably meant to show Planet-A/Suisei in one and MS-T5/Sakigake in the other)
Germany (West)1456 fdc (Mi1273 fdc)Insert from FDC, also front1986Planet-A / "Suisei"
Grenada Carriacou2205a (Mi3191)One of MS6 (2205 (a-f)) (Mi3191-3196)2000Planet-A / Suisei (not "Foton", as in text)
Grenada Carriacou2205a essayOne of MS6 (2205 essay (a-f))Planet-A / Suisei (not MS-T5/"Sakigake")
Guinea RepublicB38a (BL327A, Mi1249A)In (left and lower) margin of SS1 (B38)1989Two depictions of Planet-A / Suisei; (the design was probably meant to show Planet-A/Suisei in one and MS-T5/Sakigake in the other)
Guinea-Bissau689 (BL268)In (upper-right) margin of SS11986Planet-A / "Suisei"
Hungary2974 (Mi3807A)
i2974 (Mi3807B)

Imperforate
1986Planet-A / "Szuiszei" (Suisei)
Hungary2974 fdcStamp on FDC
Hungary2974 maxiMaxicard
Ivory CoastC102 (Mi891)
iC102

Imperforate
1986Planet-A / Suisei (not "MS-T5" / Sakigake)
Ivory CoastC102 dsDeluxe sheet (C102)
Malagasy Republic795 (Mi1061A)
i795 (Mi1061B)

Imperforate
1987Planet-A / Suisei (not "Planet-A1", the original name of MS-T5 / Sakigake)
Malagasy Republic795a (BL46A)
i795a (BL46B)
On stamp of SS1 (795)
On stamp of imperforate SS1 (i795)
Malagasy Republic796 (Mi1062A)
i796 (Mi1062B)

Imperforate
Planet-A / Suisei (originally named "Planet-A2")
Malagasy Republic796a (BL47A)
i796a (BL47B)
On stamp of SS1 (796)
On stamp of imperforate SS1 (i796)
Maldive Islands1153 (Mi1166)
i1153

Imperforate
1986"Planet-A" / Suisei
Maldive Islands1212 (Mi1225)
i1212
1153 overprinted with silver symbol
i1153 overprinted with silver symbol
1986"Planet-A" / Suisei
Marshall Islands87+label (Mi63+label)One of strip of 5 (90a (86-90) + 5 labels) (Mi62-66), or three of MS15 (90b (3x (86-90)) + 5 labels)1985"Planet-A" / Suisei
Marshall Islands87 fdcStamp and (Colorano silk) cachet on FDC
Marshall Islands90a fdcOne of five stamps on FDC
Mauritania622 (Mi892A)
i622 (Mi892B)

Imperforate
1986"Planet-A" / Suisei
Mauritania622a (BL none)
i622a
On stamp of SS1 (622)
On stamp of imperforate SS1 (i622)
Mauritania622b (Mi889-892)
i622b
One of MS4 (619-622)
One of imperforate MS4 (i619-i622)
NigerC365 (Mi981A)
iC365 (Mi981B)

Imperforate
1985"Planet-A" / Suisei
NigerC365 dsDeluxe sheet (C365)
Niuafo'ou (Tonga)366 (BL75)On stamp of SS12017MS-T5 / Sakigake
Niue507 (Mi652)
i507
Also detail
Imperforate
1986"Planet-A" / Suisei
Niue509c (Mi656)
i509c
One of MS4 (509 (a-d)) (BL99, Mi654-657), also detail
One of imperforate MS4 (i509 (a-d))
ParaguayC642 label (Mi3974 label)One label and in (lower-left) margin of MS9 (C642a (5x C642 + 4 labels))1986Planet-A / Suisei
Poland2715 (Mi3015)One of pair (2715a (2714-2715))1986"Planet-A" / Suisei
Russia (USSR)5434 (BL187)In (lower) margin of SS11986"Planet-A" (in lower margin text) / Suisei
Russia (USSR)5434 fdcSS1 and (multi-color printed) cachet on FDC
St. Thomas and Prince Islands789 label (Mi950-953 label)Label from MS4 (789 (a-d + 5 labels)) (Mi950-953)1986Planet-A / "Suisei"
St. Thomas and Prince Islands790 (BL164)In (right) margin of SS1
St. Thomas and Prince IslandsUnknown ms (Mi1065-1068)MS4 (a-d)201530th anniv. MS-T5 / "Sakigake" (and also of Planet-A / Suisei); "Sakigake MS-T5" launch (in stamp 'a' and depicted in stamp 'c'); Planet-A / Suisei (in stamps 'b' and 'd', not "Sakigake MS-T5" as in their text)
St. Thomas and Prince IslandsUnknown ss (BL1068)SS130th anniv. MS-T5 / "Sakigake" (and also of Planet-A / Suisei); MS-T5 / "Sakigake" (in margin); Planet-A / Suisei (in stamp, not "Sakigake MS-T5" as in its text)
SomaliaUnknown ms (Mi?)In (upper-left) margin of MS4 (a-d)2002Planet-A / Suisei (not MS-T5 / "Sakigake")
SomaliaUnknown ims (Mi?)In (upper-left) margin of imperforate MS4 (4x 'b')
Togo1361 (Mi1944)1986Planet-A / "Suisei"
Togo1405 (Mi1990)1361 overprinted in silver1986Planet-A / "Suisei"
United StatesNoneInsert back from cover, also insert front and cover front1986"Planet-A" / Suisei
United States2116 cover (Mi1739C cover)(Parforex 26) cachet on cover1986"Planet-A" / Suisei


Below is a list of (Earlier) Planet-series (cometary) satellite launch covers (including anniversary-of-launch covers, and launch-related event covers).

CountryCancel DateCancel LocationType of ItemNotes on Content
(Earlier) Planet (Japaese cometary)
1985-01-08: MS-T5 / Sakigake
Australia1985-01-04
1985-01-08
Canberra ACT
Canberra ACT
(Space Voyage purple and orange) cachet on coverMS-T5 (Sakigake) launch
United States1985-01-07Barstow CA(Space Voyage black and red) cachet on coverMS-T5 (Sakigake) launch
Japan1985-01-08Uchinoura(Space Voyage purple and orange) cachet on coverMS-T5 (Sakigake) launch
Japan1985-01-08Usuda(Space Voyage green and orange) cachet on coverMS-T5 (Sakigake) launch
Japan1985-01-08Usuda(Space Voyage green and orange) cachet (different) on coverMS-T5 (Sakigake) launch (but Planet-A / Suisei depicted)
Spain1985-01-08Madrid(Space Voyage blue and red) cachet on coverMS-T5 (Sakigake) launch
MS-T5 / Sakigake (events)
Japan1986-03-11Usuda(Colorano silk) cachet on coverMS-T5 (Sakigake) closest approach to Halley's Comet
Japan1986-03-11Usuda(Space Voyage purple and tan and orange) cachet on coverMS-T5 (Sakigake) closest approach to Halley's Comet
1985-08-18: Planet-A / Suisei
Japan1985-08-19Uchinoura(Space Voyage green and orange) cachet on coverPlanet-A (Suisei) launch
Japan1985-08-19Uchinoura(Colorano silk) cachet on coverPlanet-A (Suisei) launch
Planet-A / Suisei (events)
Japan1986-03-08Usuda(Space Voyage black and red) cachet on coverPlanet-A (Suisei) flyby of Halley's Comet
Planet (on other than Planet launch covers)
Austria1986-03-06Graz(Purple printed) cachet on Vega-1 event cover"Planet-A" / Suisei; MS-T5 / Sakigake (but "MS-15" in text)


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Updated: 2022-08-07