Attention search: spacecraft DX1

Finally, close to the accomplishment of our long-awaited event - the launch of a spacecraft DX1 Tuesday July 8th. We would like to ask for help to all radio amateurs who are interested to receive signals spacecraft. We offer you to take part in "catching" our satellite immediately after the start.

Start will be at 19:58 Moscow time from the Baikonur cosmodrome. Based on the parameters of the orbit, the first successful communication session is expected in 3 hours over Eastern Europe, and then the satellite returns to Russia after only a few turns of a few hours from the Far East. Therefore, our PCO in Moscow will hold the first session the next day. Satellite radio beacon broadcasts in amateur radio frequency, so everyone will be able to hear it before us. Moreover, such assistance, we need to refine its orbit and confirm availability. Therefore, our gratitude will be supported souvenirs for successful hunters from around the world.

The parameters of the radio beacon mode:

· Carrier frequency: 438,225 MHz
· Protocol used: AX.25
o Call Sign Source: DSC001
o Call Sign Receiver: Dauria
· Size TMI frame within AX.25 packet 55 bytes
· Speed: 9600 bit / s
· Modulation GFSK

Nominal orbit parameters for spacecraft "DX1". B>
Initial phase vector of "DX1" presented in ITRS frame frozen at known epoch in UTC. The epoch time is fixed whereas the epoch date is launch date - time of KP 15:58:28, 0 UTC
Parameter Name Value 1 Separation time (from KP):
 - Sec;
 - H: m: sec t OTD6 sub> 9192.88
02: 33: 12.88 2 Geographical coordinates and altitude spacecraft at t DTD sub> 6 sub>:

latitude, deg
longitude, deg
altitude, km j
H 49.34 s.l.
153.02 w.l.
647.5 3 Phase vector at t DTD sub> 6 sub>, km, m / s X
Vz -1910.3877
-4803.9499 4 Osculating orbit parameters formed SC «DX1 & quot; at the moment t DTD sub> 6 sub>: - semimajor axis, km a 7008.0 < / - eccentricity, e 0.00078 - Inclination of the orbital plane, deg i 98.41 - longitude of ascending node, deg W 75.23 - argument of perigee, deg < / w 37.98 - true anomaly, deg u 191.89 - osculating period, h: min T 1: 37.3 Rated TLE
1 99999U 14999Q 14189.77200093 .00000000 00000-0 00000 + 0 0189
2 99999 098.4063 241.3788 334.5465 0009514 255.2875 14.78395364 14
(For calculation, we are grateful to Denis Tuchin of IPM).

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Looking forward to the launch! And good luck to us!



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