Alma Mater Satellite

The ALMASat project, started in 2003 at University of Bologna in Forlì, shares the same design philosophy of the UNISAT program, with the additional challenge of implementing full three-axis attitude control since the very first mission. Along with its main educational purpose the goal is to offer the scientific community a low-cost and reliable bus to be used for a wide range of space-based experiments, where pointing control is an important requirement.

NASA-Catalog: 38078

Downlink

437.465 MHz 1k2 AFSK FM

2407.850 MHz 38k4 FSK FM

 AFSK Signal

Call

ALMSAT

Orbital Parameter

NORAD                   38078
COSPAR designator       2012-006-B  
Inclination             69.485
RA of A. Node           230.525
Eccentricity            0.0775378
Argument of Perigee     39.675
Revs per day            14.04508394
Period                  1h 42m 31s (102.52 min)
Semi-major axis         7 256 km
Perigee x Apogee        316 x 1 441 km
BStar (drag term)       0.000572440 1/ER
Mean anomaly            325.864

The micropropulsion system on-board the ALMASat-1 microsatellite is a nitrogen cold gas system which uses 12 microthrusters MEMS-based (Micro Electro-Mechanical System), in order to generate the required thrust level for the whole mission, about 0.75 mN for each thruster.

Status

nicht mehr aktiv

2012-02-13 12:11:16.280 UTC: [128 Bytes KISS Frame (without CRC)]
ctrl: 19   PID: F0 {UI!}   108 Payload Bytes
from ALMSAT to IW4DUL: 
   1 > CC 00 FF 00 00 65 21 C3 38 E9 5C 75 00 71 2F 00 21 D7 00 12 
  21 > 4C 00 00 08 0D DB DC 05 26 A0 01 01 10 23 03 50 3E 04 60 00 
  41 > 14 E0 71 06 D0 68 06 19 BF 00 0F FF 22 09 C1 00 09 B3 98 F9 
  61 > E7 99 40 00 98 B9 91 99 79 CB 15 80 00 98 61 19 99 51 10 98 
  81 > 84 23 9D 89 B4 FE C2 00 00 00 00 00 00 00 00 00 00 00 00 00 
 101 > 00 00 00 82 A8 00 00 03 

13:54 UTC  
2012-02-13 13:54:21.440 UTC: [126 Bytes KISS Frame (without CRC)]
ctrl: 19   PID: F0 {UI!}   107 Payload Bytes
from ALMSAT to IW4DUL:
   1 > CC 00 FF 00 00 65 21 B3 38 E9 8C 74 00 81 28 00 11 D9 00 12
  21 > 51 00 00 09 0D 90 05 26 40 02 01 00 1F 02 90 35 03 D0 00 18
  41 > D0 42 04 70 48 04 8A 12 00 0F FF 20 BA 12 00 09 F9 9D 8A 31
  61 > 9D B0 00 9E 09 E7 9E 9A 0A 11 00 00 9D 71 56 9D 71 33 9C E4
  81 > 1C A5 69 B1 FE D1 E4 00 00 00 00 00 00 00 00 00 00 00 00 00
 101 > 00 00 82 A8 00 00 03

erste Telemetrie – 13.02.2012

Keplerelemente

ALMASAT-1
1 38078U 12006B   12048.12380304  .00019470  00000-0  57244-3 0   112
2 38078 069.4851 230.5253 0775378 039.6748 325.8643 14.04508394   521

Links und weitere Informationen

http://www.almasat.org/

Launch

T0+ 4245.30secs 1st PPOD, with XatCobeo, e-st@r, and Goliat
T0+ 4255.30secs 2nd PPOD, with Robusta, MaSat-1 and PW-Sat
T0+ 4265.30secs 3rd PPOD, with UniCubeSat
T0+ 4275.30secs AlmaSat-1