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SS
SS-02 Denpa
SS-02 Denpa
Credit: Manufacturer Image
Japanese earth magnetosphere satellite. Scientific observations in outer space. Research satellite operated by ISAS, Japan. Launched 1970 - 1971.

AKA: Corsa;MS;REXS;SRATS. Status: Operational 1970. First Launch: 1970-09-25. Last Launch: 1985-08-18. Number: 6 . Gross mass: 66 kg (145 lb).

NASA NSSDC Master Catalog Description

Suisei (the Japanese name meaning `Comet') was launched on August 18, 1985 into heliocentric orbit to fly by Comet P/Halley. It is identical to Sakigake apart from its payload: a CCD UV imaging system and a solar wind instrument. The main objective of the mission was to take UV images of the hydrogen corona for about 30 days before and after Comet Halley's descending crossing of the ecliptic plane. Solar wind parameters were measured for a much longer time period. The spacecraft is spin-stabilized at two different rates (5 and 0.2 rpm). Hydrazine thrusters are used for attitude and velocity control; star and sun sensors are for attitude control; and a mechanically despun off-set parabolic dish is used for long range communication. Suisei began UV observations in Nov. 1985, generating up to 6 images/day. The spacecraft encountered Comet P/Halley at 151,000 km on sunward side during March 8, 1986, suffering only 2 dust impacts. Fifteen burns of Suisei's 3 N motors over 5--10th of April 1987 yielded a 65 m/s velocity increase for a 60,000 km Earth gravity assist swingby on August 20, 1992, although the craft was then lost behind the Sun for the summer. The hydrazine was depleted on 22 February 1991. Preliminary tracking indicated a 900,000 km flyby had been achieved. ISAS had decided during 1987 to guide Suisei to a Nov. 24, 1998 encounter with P/Giacobini-Zinner, but due to depletion of the hydrazine, this, as well as plans to fly within several million kilometers of Comet P/Tempel-Tuttle on Feb. 28, 1998 has been cancelled.


More at: SS.

Subtopics

SS-60 Brazilian tactical ballistic missile.

SS-300 Brazilian short range ballistic missile.

SS-1000 Brazilian intermediate range ballistic missile.

SS-25 Brazilian tactical ballistic missile.

Family: Earth, Magnetosphere sat. People: Foerschner, Gross, E. Country: Japan. Launch Vehicles: Mu, Mu-4S, Mu-3C, Mu-3S-II, Mu-3. Launch Sites: V-2 Gruppe Nord, V-2 Gruppe Sued, Kagoshima, Kagoshima M. Agency: ISAS. Bibliography: 126, 2, 6, 11826, 13189, 13190, 13191, 13192.
Photo Gallery

SS-11 SuiseiSS-11 Suisei
Credit: Manufacturer Image


SS-03 TaiyoSS-03 Taiyo
Credit: Manufacturer Image



1970 September 25 - . Launch Site: Kagoshima. Launch Complex: Kagoshima M. LV Family: Mu. Launch Vehicle: Mu-4S. FAILURE: Fourth stage failed to ignite.. Failed Stage: 4.
1971 September 28 - . 04:00 GMT - . Launch Site: Kagoshima. Launch Complex: Kagoshima M. LV Family: Mu. Launch Vehicle: Mu-4S.
1972 August 19 - . 02:40 GMT - . Launch Site: Kagoshima. Launch Complex: Kagoshima M. LV Family: Mu. Launch Vehicle: Mu-4S.
1975 February 24 - . 05:25 GMT - . Launch Site: Kagoshima. Launch Complex: Kagoshima M. LV Family: Mu. Launch Vehicle: Mu-3C.
1979 February 21 - . 05:00 GMT - . Launch Site: Kagoshima. Launch Complex: Kagoshima M. LV Family: Mu. Launch Vehicle: Mu-3C.
1985 August 18 - . 23:33 GMT - . Launch Site: Kagoshima. Launch Complex: Kagoshima M. Launch Pad: M1. LV Family: Mu. Launch Vehicle: Mu-3S-II.

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