SPOT NO. 4
POLAR Balloon Studies of the Northern Auroras
polar Crossing of the Near Apogee in the
1996 Ascending Nodes Northern Hemisphere
Orbit | Date / Time | Start Time Stop Time
No. |MMDD DOY hh:mm| DOY hh DOY hh
235 8/13 226 20:20 226 23 227 09
236 8/14 227 13:56 227 16 228 02
237 8/15 228 07:31 228 11 228 21
238 8/16 229 01:06 229 04 229 14
239 8/16 229 18:42 229 22 230 08
240 8/17 230 11:17 230 14 231 00
241 8/18 231 04:52 231 08 231 18
242 8/18 231 22:27 232 02 232 12
243 8/19 232 16:02 232 19 233 05
244 8/20 233 09:37 233 13 233 23
245 8/21 234 03:12 234 06 234 16
246 8/21 234 20:48 235 00 235 10
247 8/22 235 14:23 235 17 236 03
248 8/23 236 07:58 236 11 236 21
249 8/24 237 01:34 237 04 237 14
250 8/24 237 19:09 237 22 238 08
Caveat: The determination of these periods are based on the crossing of the
ascending nodes (start of the orbit). No predict orbit files were available
at the time of the determination of the start of the orbit. The FOT times for
the start of the POLAR orbit from Orbit Number 215 to 234 were used to obtain
the average period of 17hs 35mm 15.78 seconds, and used to extrapolate to these
times of interest to the 'Polar Balloon Studies of the Northern Auroras", SPOT
number 4. These tabulated values were double checked with the SSC projected
values for the start time of POLAR in the 'Nightside Plasmasphere'.
The SSC and this table values are consistent within a few minutes.
July 15, 1996 compilation by
Daniel Berdichevsky
ISTP/SPOF staff at NASA/GSFC
e-mail : xrdbb@lepvax.gsfc.nasa.gov
berdi@spof01.gsfc.nasa.gov
berdi@istp1.gsfc.nasa.gov
phone : 301 - 286-4608
fax : 301 - 286-1683
surface : GSFC/NASA, mail code 692, Greenbelt, MD 20771
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Change of the Orbit No. by one, by D. Berdichevsky, July 17, 1996