Raijin-2

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Raijin-2
Names Rising-2
SpriteSat
Mission type Earth observation
Operator Tohoku University
COSPAR ID 2014-029D
SATCAT no. 39769
Website At tohoku.ac.jp
Mission duration 4 years, 4 months and 26 days (ongoing)
Spacecraft properties
Launch mass 42 kg (93 lb)
Start of mission
Launch date 03:05, May 24, 2014 (2014-05-24T03:05)
Rocket H-IIA 202
Launch site Tanegashima Space Center
Orbital parameters
Reference system Geocentric
Eccentricity 0.0013
Perigee 629.8 km (391.3 mi)
Apogee 647.4 km (402.3 mi)
Inclination 97.9°
Period 97.5 min

Raijin-2 (Rising-2) is a Japanese micro-satellite launched in 2014. The satellite is built around a 10 cm diameter, 1m focal length Cassegrain telescope and features the following instruments:

  • HPT - main telescope with 5m resolution at nadir, operating in visible and near-infrared bands
  • BOL - bolometer array camera for cloud temperature measurement
  • WFC - wide field-of-view CCD camera
  • LSI-N and LSI-W - 2 CMOS medium field-of-view cameras for near-infrared imaging
  • VLF-ANT, R - radio antenna to receive signatures of lighting events

All instruments are powered by GaAs solar cells mounted on the spacecraft body, with estimated electrical power of 47.6W. The spacecraft features an unusual central-pillar bus, inherited from the Sprite-Sat satellite. The attitude control is done by means of reaction wheels and magneto-torquers, and qualified for 0.1 degrees angular accuracy.

Launch[edit]

RISING-2 was launched from Tanegashima, Japan, on 24 May 2014 by a H-IIA rocket.

Mission[edit]

The satellite is intended for atmosphere research, especially for gathering statistics on cloud formation and the occurrence of sprites in the upper atmosphere. Mission data are down-linked in S-band with maximal data rate of 38.4 kbit/s.

See also[edit]

References[edit]

External links[edit]