(A) Re my posting Apr 7 the second of the two orbits was the good one,
and has since been refined by Ted Molczan (posting 000409)
(B) Current status of northbound sun-synchronous satellites.
t50=time crossing latitude 50deg North latitude
t50 & orbit are from circular orbit fit (by me)
Observer Date t50 Fixes Height Incl Mag Comment
yymmdd hhmm numbr (km) (deg)
MW 000325 2127.7 2 813 98.6 6/8
MW 000325 2132.4 2 671 97.5 7
RE 000404 2132.5 2 685 98.3 7/8 P=.5 (a) "0009501"
RE 000405 210* 1 - - 6/8 "0009601"
RE 000405 2215.9 2 778 98.3 7 "0009501"
MW 000405 2207.7 2 3 =91050A 2nd fix doubtful
MW 000406 2136.3 2 700 98.9 7 (a)
BG 000407 195* 1 - - 7 (a)
BG 000407 205* 1 - - Flash P=4.48
MW 000407 2151.5 4 777 98.4 6/8 Irreg
MW 000407 2227.7 2 689 98.9 8 (a)
MW 000409 2129.4 2 774 98.5 8
MW 000409 2227.7 3 692 99.1 8/9 (a)
Note:(a) are all the same object: see (A) above. The 000407 observations
were 0.14 min early, the 000409 obs were 0.58min early (on my
elements).
(C) There are several objects above with height about 790km.
I fitted 2 orbits to the 000405 + 000407 ones, and on 000409 I
looked for it without seeing anything close.
Here are 3 orbits fitted to the 000407 + 000409 ones, but only
the middle fit is really good.
1 00000U 99000 00098.90103000 0.00000000 0
2 00000 98.0260 174.1000 0344200 249.0400 107.2431 15.12611008 0
1 00000U 99000 00098.90091000 0.00000000 0
2 00000 98.4300 174.7500 0126500 220.4400 138.6129 14.62090969 0
1 00000U 99000 00098.90079000 0.00000000 0
2 00000 98.8340 175.4100 0170600 112.9700 248.8389 14.11587048 0
(D) Ted Molczan tells us that 99057C has broken up: presumably most
of the recent unids will be fragments of it, and will get
official NORAD ids sometime.
Mike Waterman michael.waterman@gecm.com
-----------------------------------------------------------------
Unsubscribe from SeeSat-L by sending a message with 'unsubscribe'
in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org
http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Mon Apr 10 2000 - 06:25:15 PDT