&sq=&lang=&file=File:Question_book-new.svg){kind=small} | This article needs additional citations for verification. (August 2019) |
&sq=&lang=&file=File:Planet_B.gif) Artist's concept of Nozomi orbiter at Mars | |
| Names | PLANET-B |
|---|---|
| Mission type | Mars orbiter |
| Operator | JAXA |
| COSPAR ID | 1998-041A |
| SATCAT no. | 25383 |
| Website | isas.jaxa.jp |
| Mission duration | 5 years, 5 months and 6 days |
| Spacecraft properties | |
| Manufacturer | ISAS |
| Launch mass | 540 kg (1,190 lb)[1] |
| Dry mass | 225 kg (496 lb) |
| Payload mass | 33 kg (73 lb)[1] |
| Dimensions | 1.6 × 1.6 × 0.58 m (5.2 × 5.2 × 1.9 ft)[1] |
| Start of mission | |
| Launch date | July 3, 1998, 18:12:00 UTC |
| Rocket | M-V |
| Launch site | Uchinoura Space Center |
| End of mission | |
| Disposal | Decommissioned |
| Deactivated | December 31, 2003 |
| Last contact | December 9, 2003 |
| Orbital parameters | |
| Reference system | Heliocentric |
| Transponders | |
| Frequency | X-band: 8410.93 MHz S-band: 2293.89 MHz |
PLANET series | |
Nozomi (Japanese: のぞみ, lit. "Wish" or "Hope", and known before launch as Planet-B) was a Japanese Mars orbiter that failed to reach Mars due to electrical failure. It was constructed by the Institute of Space and Astronautical Science, University of Tokyo and launched on July 4, 1998, at 03:12 JST (July 3, 1998, at 18:12 UTC) with an on-orbit dry mass of 258 kg and 282 kg of propellant.[citation needed] The Nozomi mission was terminated on December 31, 2003.[citation needed]
Nozomi was designed to study the upper Martian atmosphere and its interaction with the solar wind and to develop technologies for use in future planetary missions. Specifically, instruments on the spacecraft were to measure the structure, composition and dynamics of the ionosphere, aeronomy effects of the solar wind, the escape of atmospheric constituents, the intrinsic magnetic field, the penetration of the solar-wind magnetic field, the structure of the magnetosphere, and dust in the upper atmosphere and in orbit around Mars. The mission would have also returned images of Mars' surface.[citation needed]
- ^ a b c "Nozomi". NASA Space Science Data Coordinated Archive. Retrieved December 1, 2022.