Advanced Land Observing Satellite-2
H-IIA Launch Vehicle Flight 24, launching the Advanced Land Observing Satellite-2 "Daichi-2".
Mission typeRemote sensing
COSPAR ID2014-029A Edit this at Wikidata
SATCAT no.39766
Mission duration9 years, 11 months, 10 days (elapsed)
Spacecraft properties
Spacecraft typeAdvanced Land Observing Satellite
Launch mass2,120 kg (4,670 lb)
Start of mission
Launch date24 May 2014, 03:05:14 UTC[1]
RocketH-IIA 202
Launch siteTanegashima, Yoshinobu 1
ContractorMitsubishi Heavy Industries
Orbital parameters
Reference systemGeocentric orbit[2]
RegimeSun-synchronous orbit
Perigee altitude636 km (395 mi)
Apogee altitude639 km (397 mi)
Period97.33 minutes
Advanced Land Observation Satellite
ALOS-3 →

Advanced Land Observing Satellite-2 (ALOS-2), also called Daichi-2, is a 2,120 kg (4,670 lb) Japanese satellite launched in 2014. Although the predecessor ALOS satellite had featured 2 optical cameras in addition to L-band (1.2 GHz/25 cm) radar, ALOS-2 had optical cameras removed to simplify construction and reduce costs. The PALSAR-2 radar is a significant upgrade of the PALSAR radar, allowing higher-resolution (1 x 3 m per pixel) spotlight modes in addition to the 10 m resolution survey mode inherited from the ALOS spacecraft. Also, the SPAISE2 automatic ship identification system and the Compact Infra Red Camera (CIRC) will provide supplementary data about sea-going ships and provide early warnings of missile launches.[3]


ALOS-2 was launched from Tanegashima, Japan, on 24 May 2014 by a H-IIA rocket.[4]


The satellite contains a 1.2 GHz synthetic-aperture radar (SAR) sensor that is intended to be used for cartography, monitoring of naval traffic and disaster monitoring of Asia and the Pacific.[3] JAXA initially hoped to be able to launch the successor to ALOS during 2011, but these plans were delayed until 2014 because of budget restrictions.

See also


  1. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Report. Retrieved 16 November 2014.
  2. ^ "ALOS 2 Satellite details 2014-029A NORAD 39766". N2YO. 25 January 2015. Retrieved 25 January 2015.
  3. ^ a b "Satellite Missions Catalogue: ALOS-2 (Advanced Land Observing Satellite-2) / Daichi-2". 29 May 2012. Retrieved 11 December 2022.
  4. ^ "Japanese craft launched with night-vision mapping radar", Spaceflight Now, Retrieved on 31 May 2014