Dear All, Got various interesting reactions from , but the true problem wasn't solved yet. I suspected an error in the data: perhaps a different day, 1 hour time difference etc, but no go. Finally I checked the coordinates of the locations, and there it was: Mons en Montois does not have Lat 48 deg 48' N, Long 3 deg 14' E, as indicated to me, but 48.48 deg N, 3.14 deg E... Now the triangulation is quite good, but the exact time is unknown. An appearance during the first half of the exposure gives the better triangulation results. This must come from a quite bright object, as it is more than 1000 km away: 8 April 2002, between 20h13m and 20h40m UT 5 deg W, 57 deg N (+- a few degrees in Long and Lat) height between 250 and 350 km duration of the 'flare' between 7 and 10 seconds Thanks for identifying it! Chris VVS Belgium >Date: Sun, 21 Jul 2002 23:56:05 +0200 >From: Christian Steyaert <steyaert@vvs.be> >Subject: Iridflare on I-Z photo? >Through the intermediate of Jean Meeus, I obtained two photographs of Comet >Ikeya-Zhang with a 'meteor' trail, taken by SAF members in France. >The two stations are only 20 km apart, and the trail has a small parallax, >indicating that it is not a meteor, but a satellite reflection. Also the >light curve supports this. >Unfortunately, I am not able to get a meaningful triangulation of the >trail, nor do I find an Iridium flare candidate :-( >The data: > 8 April 2002, between 20h13 and 20h40 UT > average location: 48 43' N, 3 17' E, 135 m > trail approx between RA = 0h41m, Decl = 48 40' > and RA = 0h50m, Decl = 46 30' > (Az 155 deg, Elev 12 deg, low in the northwest) ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Sun Aug 04 2002 - 15:27:07 EDT