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SNUSAT-1B is classified as:

NORAD ID: 42733
Int'l Code: 1998-067MN
Perigee: 306.2 km
Apogee: 306.7 km
Inclination: 51.6 °
Period: 90.5 minutes
Semi major axis: 6677 km
RCS: Unknown
Launch date: November 20, 1998
Source: South Korea (SKOR)

Uplink (MHz):
Downlink (MHz): 436.090
Beacon (MHz):
Mode: 1200bps BPSK
Call sign: ON02KR
Status: Unknown

SNUSAT-1B (Seoul National University Satellite 1), is a South Korean 2U-CubeSat designed by the Seoul National University participating in the QB50 project. It carries the Flux-?-Probe Experiment (FIPEX) as the primary payload for the QB50 project, measuring lower thermosphere constituents at altitudes starting from 350 km and down as the orbit decays due to atmospheric drag. The secondary mission is validation of fault-detection, isolation and recovery algorithm developed by Seoul National Unit and imaging space environment.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 42733U 98067MN  19022.02291816  .00093534  14388-4  29898-3 0  9993
2 42733  51.6271 306.5415 0000371 127.4280 232.6760 15.91055049 94943
Source of the keplerian elements: AFSPC