39459 13 070B 9331 G 20150626172526000 17 75 2241340-074137 56 I+172 10 39459 13 070B 9331 G 20150626172716000 17 75 2241346-074178 56 I+167 10 39459 13 070B 9331 G 20150626172907000 17 75 2241350-074212 56 I+159 10 39459 13 070B 9331 G 20150626173059000 17 75 2241355-074246 56 I+179 10 39459 13 070B 9331 G 20150626174616000 17 75 2241394-074541 56 I+178 10 39459 13 070B 9331 G 20150626174810000 17 75 2241399-074581 56 I+167 10 39459 13 070B 9331 G 20150626175002000 17 75 2241403-074612 56 I+158 10 39459 13 070B 9331 G 20150626175153000 17 75 2241408-074651 56 I+177 10 ---------------------------------------------------------------------- 0.51-meter F/6.3 Dall-Kirkham + CCD + Astrometrica + UCAC4 Warrumbungle Obs., NSW, Australia 31.27517 S, 149.19453 E, 552 m ASL What these numbers mean: http://www.satobs.org/position/IODformat.html ---------------------------------------------------------------------- After imaging the Chang'e 2 r/b (2010-050B) in May, I now also imaged the Chang'e 3 r/b (2013-070B) at translunar distance. Images were made using the 0.51-m telescope of MPC Q65 Warrumbungle (Cospar 9331) in Australia. The r/b was at a distance of approximately 405 000 km at the time of imaging. Unlike the Chang'e 2 r/b, which is more or less steady in brightness, the Chang'e 3 r/b is clearly tumbling, with a clear brightness variation of 2 magnitudes at least, and a period of either 10.5 or 21 minutes. The rise of brightness is less steep than the very sudden drop in brightness after the peak. I will post images on my blog later. Same data as above in MPC format: NET UCAC-4 2013-070B C2015 06 26.72600 22 41 33.99 -07 24 49.3 17.2 R Q65 2013-070B C2015 06 26.72727 22 41 34.61 -07 25 04.2 16.7 R Q65 2013-070B C2015 06 26.72855 22 41 35.02 -07 25 16.2 15.9 R Q65 2013-070B C2015 06 26.72985 22 41 35.47 -07 25 28.4 17.9 R Q65 2013-070B C2015 06 26.74046 22 41 39.36 -07 27 14.7 17.8 R Q65 2013-070B C2015 06 26.74178 22 41 39.92 -07 27 29.1 16.7 R Q65 2013-070B C2015 06 26.74308 22 41 40.28 -07 27 40.4 15.8 R Q65 2013-070B C2015 06 26.74436 22 41 40.83 -07 27 54.2 17.7 R Q65 - Marco ----- Dr Marco Langbroek - SatTrackCam Leiden, the Netherlands. e-mail: sattrackcam_at_langbroek.org Cospar 4353 (Leiden): 52.15412 N, 4.49081 E (WGS84), +0 m ASL Cospar 4355 (Cronesteyn): 52.13878 N, 4.49937 E (WGS84), -2 m ASL Station (b)log: http://sattrackcam.blogspot.com Twitter: _at_Marco_Langbroek ----- _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Sun Jun 28 2015 - 13:12:10 UTC
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