DASO Circular No. 72 Issued: 2006 Sept. 24, 18:52 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 22.36078 01 08 09.32 -28 45 54.6 D0072693 6R10DB9 C2006 09 22.36141 01 08 09.45 -28 45 59.4 D0072693 6R10DB9 C2006 09 22.36271 01 08 09.79 -28 46 06.3 19.5 R D0072693 Observer details: 693 Catalina Station, Tucson. Observer C. W. Hergenrother. 1.54-m reflector + CCD. Orbital elements: 6R10DB9 Epoch 2006 Sept. 22.0 TT = JDT 2454000.5 MPC M 326.52839 (2000.0) P Q n 0.93169568 Peri. 224.38931 +0.82446580 -0.56589852 a 1.0382135 Node 170.07324 +0.52526636 +0.76268497 e 0.0336278 Incl. 1.28762 +0.21059772 +0.31316210 P 1.06 H 29.8 G 0.15 U 3 Residuals in seconds of arc K069E 703 0.4+ 1.0+ K069G 703 0.0 0.2+ K069H 703 0.1- 0.5+ K069E 703 0.2+ 0.9- K069G 703 0.1+ 0.5+ K069I E12 0.3- 0.1- K069E 703 0.0 1.0- K069G E12 0.6+ 0.2- K069I E12 0.0 0.4- K069E 703 (2.4+ 1.0-) K069G E12 0.4- 0.4+ K069I E12 0.2+ 0.3+ K069E 703 0.9- 0.7+ K069G E12 0.1+ 0.4+ K069I E12 0.1+ 0.3- K069E 703 0.6- 0.0 K069G E12 0.6+ 0.1+ K069L E12 0.6- 0.6- K069E 703 0.6- 0.1+ K069G E12 0.6+ 0.0 K069L E12 0.2- 0.1- K069E E12 0.8+ 0.5- K069G E12 0.6- 0.5+ K069M 693 0.9+ 0.5+ K069E E12 0.0 0.2+ K069G E12 0.0 1.0- K069M 693 0.3+ 0.2- K069F 854 1.0+ 0.1- K069G E12 0.2- 0.2+ K069M 693 0.1- 1.2+ K069F 854 0.5- 0.1+ K069G E12 0.2- 0.0 K069N E12 0.2- 0.2- K069F 854 0.4+ 0.7+ K069G E12 0.4+ 0.7- K069N E12 0.1- 0.5- K069G 703 1.0- 0.2- K069H 703 0.4- 0.8- K069G 703 0.2- 0.6- K069H 703 0.4- 0.0 Heliocentric orbital elements for pre-capture and post-capture epochs: 6R10DB9 Epoch 2005 Aug. 18.0 TT = JDT 2453600.5 MPC M 225.31882 (2000.0) P Q n 1.05914014 Peri. 128.12683 +0.17742285 -0.98410700 a 0.9531628 Node 311.65181 +0.89980475 +0.16525459 e 0.0504910 Incl. 0.56636 +0.39858818 +0.06499491 P 0.93 H 29.8 G 0.15 U 3 From 39 observations 2006 Sept. 14-24, mean residual 0".50. 6R10DB9 Epoch 2007 Dec. 6.0 TT = JDT 2454440.5 MPC M 12.20743 (2000.0) P Q n 0.94237823 Peri. 6.10361 +0.52425266 -0.85152281 a 1.0303526 Node 52.27875 +0.78085180 +0.47683282 e 0.0233262 Incl. 0.59757 +0.33974934 +0.21803525 P 1.05 H 29.8 G 0.15 U 3 From 39 observations 2006 Sept. 14-24, mean residual 0".50. Geocentric orbital elements for various epochs: Epoch T (JD) Peri. Node Incl. e a/km P/d YYYYMMDD (Referred to Earth equator) 20060910 2453989.75449 175.94014 159.14672 41.73731 0.5281290 1772804 270.2 20060912 2453989.37464 174.00057 159.15646 41.66503 0.5442298 1835524 284.7 20060914 2453989.00732 172.07075 159.14457 41.57470 0.5550128 1875177 294.0 20060916 2453988.63691 170.08257 159.09843 41.46046 0.5604807 1888218 297.0 20060918 2453988.24427 167.94571 158.99860 41.31531 0.5610273 1874359 293.8 20060920 2453987.81607 165.58246 158.82270 41.13873 0.5576954 1837605 285.2 20060924 2453986.86628 160.08524 158.16862 40.71764 0.5453585 1722417 258.8 20060926 2453986.38023 157.01783 157.66633 40.49357 0.5391811 1656437 244.1 20060928 2453985.91874 153.83089 157.03885 40.27493 0.5343839 1590479 229.6 20061101 2453983.58900 134.22655 126.82410 47.14094 0.6849843 1034829 120.5 20061211 2454101.49292 127.59514 104.24117 87.98074 0.5575494 1150538 141.3 20070120 2454103.90466 128.73106 104.98783 90.35581 0.5267388 1008440 115.9 20070301 2454185.78797 98.88703 101.02125 88.94117 0.6176899 876034 93.9 20070410 2454184.46454 91.42358 103.61533 85.29200 0.6194167 940167 104.4 20070520 2454267.29320 78.03320 122.54243 89.46110 0.6569712 848214 89.4 Perigees occur around 2006 Sept. 11.2 (0.005610 AU), 2007 Jan. 3.4 (0.003524 AU), Mar. 24.6 (0.002413 AU) and June 12.0 (0.002004 AU). Apogees occur around 2006 Nov. 3.7 (0.01165 AU), 2007 Feb. 13.3 (0.008947 AU) and May 4.1 (0.008966 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. 72 Issued: 2006 Sept. 24, 18:52 UT