Resurs O1-4

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General

Designation	25394 / 98043A
Launch date	10 Jul 1998
Country of origin	CIS
Mission	Remote sensing
Perigee/Apogee	815 / 818 km
Inclination	98.8°
Period	101.2 min
Launch vehicle	Zenit #29

Also carries a LLMSIRIS payload.

In mid-Apr 1999 it is known that a transmitter (8.2 GHz?) has failed.

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External resources

http://www.lmd.ens.fr/~raberant/english/home.htm

Technical data

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Specifications

Prime contractor
Platform
Mass at launch	1950 kg
Mass in orbit
Dimension
Solar array
Stabilization
DC power
Design lifetime

Downlinks at 137.40 MHz & APT on 137.85 MHz. Some downlink is also heard on 400 MHz, might come from a piggy-back package.

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MSU-SK (5-channel visible and IR scanner)

Wavebands	0.5-0.6 µm, 0.6-0.7 µm, 0.7-08 µm, 0.8-1.0 µm, 10.4-12.6 µm + a 6th one
Resolution	161 m (4 channels), 528 m (1 channel)
Swath width	714 km

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MSU-E (3-channel steerable push-broom scanner)

Wavebands	0.5-0.67 µm, 0.65-0.8 µm, 0.8-1.0 µm
Resolution	30 m
Swath width	60 km

Downlink: 8.2 GHz, 16 mbps

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Scarab 2 (Scanner for Radiation Budget)

Telescopes wavebands

0.2 - 4 µm (solar reflections) 4 - 100 µm (earth IR) 10.5 - 12.5 µm (IR) 0.5 - 0.7 µm (visible)

40 kg. Scarab 2's flight has been paid for by the CNES. Should have 2 years of lifetime

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