CSSWE
Mission
The Colorado Student Space Weather Experiment (CSSWE) is an NSF-funded 3U CubeSat (30×10×10 cm) which houses an energetic particle telescope. The Relativistic Electron and Proton Telescope integrated little experiment (REPTile) will provide directional differential flux measurements of high-energy electrons and protons. The CSSWE mission goals are:
- Develop a student-designed CubeSat system for space weather investigation
- Understand the relationships between solar energetic protons (SEPs), flares, and coronal mass ejections (CMEs)
- Characterize the variations of the Earth’s radiation belt electrons
Orbital parameters
Name CSSWE NORAD 38761 COSPAR designation 2012-048-D Inclination (degree) 64.673 RAAN 304.549 Eccentricity 0.0159838 ARGP 61.406 Orbit per day 14.84526572 Period 1h 37m 00s (97.0 min) Semi-major axis 6 993 km Perigee x apogee 503 x 727 km Drag factor 0.000352650 1/ER Mean Anomaly 300.298
TLE
CSSWE 1 91038U 0 12272.43926843 +.00004831 +00000-0 +44894-3 0 00228 2 91038 064.6715 356.1079 0218302 285.2254 181.9517 14.79180402002130
Downlink
437.345 MHz 9k6 FSK AX.25, FM (Every 18 sec)
Telemetry
During the first month after orbit insertion, CSSWE will transmit a beacon once every 18 seconds. CSSWE uses an amateur frequency band, so this beacon can be heard by any amateur radio operator. The CSSWE team has created a beacon decoding software package to allow amateur operators to collect satellite beacons themselves – see below for instructions to download and run the package. The following list will ensure amateur operators are prepared to hear CSSWE:
[271 Bytes KISS Frame (without CRC)]
ctrl: 3 PID: F0 {UI}
252 Payload Bytes
from CQ to CSSWE7:
1 > 42 00 30 F8 B8 7B AD 64 01 00 00 00 00 00 F4 FB DA 61 45 34
21 > 01 00 C1 01 E1 00 00 CE 25 00 0B FF 03 A9 07 00 AC 05 9B 00
41 > ED 03 B0 00 00 33 21 1F 29 00 00 00 00 00 00 CE 00 FE FE FE
61 > FE CF CF CF CF 00 0A 00 6D 00 72 6E AD 64 00 CE 25 00 0A FF
81 > 03 A9 07 00 95 05 93 00 C9 00 A2 01 00 1F 25 1E 27 00 00 00
101 > 00 00 00 CE 00 FE FE FE FE CF CF CF CE 00 0A 00 68 00 00 CE
121 > 25 00 0D FF 03 A9 07 00 B2 06 98 00 D6 00 CF 04 00 2A 2E 23
141 > 2D 00 00 00 00 00 00 CE 00 FE FE FE FE CF CF CF CF 00 0A 00
161 > 69 00 02 CE 25 00 0B FF 03 A9 07 02 A3 05 95 00 CF 00 B8 02
181 > 02 24 29 20 2A 02 00 00 00 00 00 CE 02 FE FE FE FE CF CF CF
201 > CE 02 0A 00 68 00 00 10 00 00 00 00 00 00 01 00 00 06 00 01
221 > 00 00 00 00 00 00 00 00 1C 2C 0A 00 00 00 60 00 00 00 6C 08
241 > 00 00 00 00 9C AB 02 00 1B D0 D1 02
Decoding example with the software from DK3WN. This data is received 10 October 2013 at 18:45 UTC.
Status
Launched and active.
Homepage and other references:
Main CSSWE website: Colorado CSSWE