DASO Circular No. 73 Issued: 2006 Sept. 26, 19:43 UT The DISTANT ARTIFICIAL SATELLITES OBSERVATION (DASO) Circulars are a private publication by staff of the Minor Planet Center and are intended to disseminate astrometric observations of distant artificial satellites. Editor: Gareth V. Williams (gwilliams@cfa.harvard.edu) Astrometry submissions to mpc@cfa.harvard.edu (Subject line = "ART SAT") Observations: 6R10DB9 C2006 09 25.77831 01 51 59.25 -33 35 42.1 20.6 R D0073E12 6R10DB9 C2006 09 26.67365 02 03 54.67 -34 39 50.1 20.7 R D0073E12 6R10DB9 C2006 09 26.68074 02 03 56.19 -34 40 14.6 20.5 R D0073E12 Observer details: E12 Siding Spring Survey. Observer R. H. McNaught. 0.5-m Uppsala Schmidt + CCD. Orbital elements: 6R10DB9 Epoch 2006 Sept. 22.0 TT = JDT 2454000.5 MPC M 326.52884 (2000.0) P Q n 0.93169528 Peri. 224.38882 +0.82447042 -0.56589179 a 1.0382138 Node 170.07326 +0.52526021 +0.76268934 e 0.0336278 Incl. 1.28764 +0.21059496 +0.31316361 P 1.06 H 29.8 G 0.15 U 3 Residuals in seconds of arc K069E 703 0.4+ 1.0+ K069G 703 0.1+ 0.5+ K069I E12 0.0 0.3- K069E 703 0.2+ 0.9- K069G E12 0.6+ 0.2- K069I E12 0.2+ 0.3+ K069E 703 0.0 1.1- K069G E12 0.4- 0.5+ K069I E12 0.1+ 0.2- K069E 703 (2.4+ 1.1-) K069G E12 0.1+ 0.4+ K069L E12 0.5- 0.5- K069E 703 0.9- 0.7+ K069G E12 0.6+ 0.2+ K069L E12 0.1- 0.0 K069E 703 0.6- 0.1- K069G E12 0.6+ 0.0 K069M 693 1.0+ 0.6+ K069E 703 0.6- 0.0 K069G E12 0.6- 0.6+ K069M 693 0.4+ 0.1- K069E E12 0.8+ 0.5- K069G E12 0.0 0.9- K069M 693 0.0 1.3+ K069E E12 0.0 0.2+ K069G E12 0.2- 0.2+ K069N E12 0.1- 0.1- K069F 854 1.0+ 0.1- K069G E12 0.2- 0.0 K069N E12 0.1+ 0.4- K069F 854 0.5- 0.0 K069G E12 0.4+ 0.6- K069P E12 0.3+ 0.2- K069F 854 0.4+ 0.7+ K069H 703 0.4- 0.8- K069Q E12 0.2- 0.0 K069G 703 1.0- 0.2- K069H 703 0.3- 0.0 K069Q E12 0.5- 0.5- K069G 703 0.2- 0.6- K069H 703 0.1- 0.6+ K069G 703 0.0 0.3+ K069I E12 0.3- 0.0 Heliocentric orbital elements for pre-capture and post-capture epochs: 6R10DB9 Epoch 2005 Aug. 18.0 TT = JDT 2453600.5 MPC M 225.32178 (2000.0) P Q n 1.05914049 Peri. 128.12799 +0.17747083 -0.98409834 a 0.9531626 Node 311.64786 +0.89979689 +0.16529866 e 0.0504912 Incl. 0.56636 +0.39858458 +0.06501389 P 0.93 H 29.8 G 0.15 U 3 From 42 observations 2006 Sept. 14-26, mean residual 0".49. 6R10DB9 Epoch 2007 Dec. 6.0 TT = JDT 2454440.5 MPC M 12.28953 (2000.0) P Q n 0.94230650 Peri. 6.11053 +0.52546853 -0.85077311 a 1.0304049 Node 52.18999 +0.78016326 +0.47794674 e 0.0233879 Incl. 0.59780 +0.33945265 +0.21852238 P 1.05 H 29.8 G 0.15 U 3 From 42 observations 2006 Sept. 14-26, mean residual 0".49. Geocentric orbital elements for various epochs: Epoch T (JD) Peri. Node Incl. e a/km P/d YYYYMMDD (Referred to Earth equator) 20060910 2453989.75472 175.94126 159.14676 41.73740 0.5281691 1772972 270.3 20060912 2453989.37488 174.00174 159.15652 41.66512 0.5442700 1835704 284.7 20060914 2453989.00758 172.07202 159.14460 41.57479 0.5550528 1875365 294.0 20060916 2453988.63717 170.08391 159.09848 41.46054 0.5605205 1888409 297.1 20060918 2453988.24455 167.94718 158.99861 41.31540 0.5610666 1874548 293.8 20060920 2453987.81637 165.58400 158.82275 41.13881 0.5577339 1837785 285.2 20060924 2453986.86660 160.08709 158.16863 40.71773 0.5453945 1722574 258.8 20060926 2453986.38057 157.01983 157.66636 40.49366 0.5392158 1656584 244.1 20060928 2453985.91907 153.83304 157.03885 40.27502 0.5344168 1590613 229.7 20061101 2453983.58930 134.22949 126.82144 47.14185 0.6850001 1034872 120.5 20061211 2454101.50456 127.59099 104.23466 87.98665 0.5574346 1150675 141.3 20070120 2454103.92067 128.76087 104.98404 90.36196 0.5264265 1008646 116.0 20070301 2454185.80940 98.89035 101.00706 88.94690 0.6174251 875972 93.9 20070410 2454184.48463 91.42722 103.60703 85.30209 0.6191251 939911 104.3 20070520 2454267.28849 78.04696 122.52432 89.47317 0.6567093 847939 89.4 Perigees occur around 2006 Sept. 11.2 (0.005610 AU), 2007 Jan. 3.5 (0.003534 AU), Mar. 24.7 (0.002421 AU) and June 12.1 (0.002006 AU). Apogees occur around 2006 Nov. 3.7 (0.01165 AU), 2007 Feb. 13.4 (0.008941 AU) and May 4.3 (0.008963 AU). +-------------------------------------------------------------------------+ | The DISTANT ARTIFICAL-SATELLITES OBSERVERS Circulars are prepared as | | a private publication by staff of the Minor Planet Center. | | Back issues are available at: ftp://cfa-ftp.harvard.edu/pub/DASO/ | | Archives of published (and referenceable) observations are at: | | ftp://cfa-ftp.harvard.edu/pub/DASO/Obs/ | | Http access available at http://cfa-www.harvard.edu/~gwilliams/DASO/ | | Free e-mail subscriptions: send your e-mail address to the editor. | | Astrometry submission to mpc@cfa.harvard.edu with subject "ART SAT". | | These circulars are copyrighted publications, but free use of any and | | all information contained herein may be made provided that the normal | | scientific procedures for referencing material are followed. | +-------------------------------------------------------------------------+ DASO Circular No. 73 Issued: 2006 Sept. 26, 19:43 UT