DASO Circular No. 71 Issued: 2006 Sept. 24, 14:56 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 23.62814 01 25 21.23 -30 37 06.3 20.1 R D0071E12 6R10DB9 C2006 09 23.63784 01 25 23.76 -30 38 04.0 20.2 R D0071E12 Observer details: E12 Siding Spring Survey. Observer D. M. Burton. Measurer R. H. McNaught. 0.5-m Uppsala Schmidt + CCD. Orbital elements: 6R10DB9 Epoch 2006 Sept. 22.0 TT = JDT 2454000.5 MPC M 326.52585 (2000.0) P Q n 0.93169876 Peri. 224.39202 +0.82444013 -0.56593592 a 1.0382112 Node 170.07313 +0.52530058 +0.76266073 e 0.0336266 Incl. 1.28753 +0.21061284 +0.31315355 P 1.06 H 29.8 G 0.15 U 3 Residuals in seconds of arc K069E 703 0.4+ 1.0+ K069G 703 0.3- 0.5- K069H 703 0.3- 0.7- K069E 703 0.2+ 0.9- K069G 703 0.1- 0.3+ K069H 703 0.3- 0.1+ K069E 703 0.0 1.1- K069G 703 0.1+ 0.6+ K069H 703 0.0 0.6+ K069E 703 (2.4+ 1.1-) K069G E12 0.6+ 0.2- K069I E12 0.2- 0.1- K069E 703 0.9- 0.6+ K069G E12 0.4- 0.5+ K069I E12 0.1+ 0.4- K069E 703 0.6- 0.1- K069G E12 0.1+ 0.4+ K069I E12 0.4+ 0.3+ K069E 703 0.5- 0.0 K069G E12 0.6+ 0.2+ K069I E12 0.3+ 0.2- K069E E12 0.8+ 0.6- K069G E12 0.6+ 0.0 K069L E12 0.3- 0.4- K069E E12 0.0 0.1+ K069G E12 0.6- 0.6+ K069L E12 0.1+ 0.1+ K069F 854 1.0+ 0.0 K069G E12 0.0 0.9- K069N E12 0.1- 0.2+ K069F 854 0.5- 0.1+ K069G E12 0.2- 0.2+ K069N E12 0.0 0.1- K069F 854 0.3+ 0.8+ K069G E12 0.1- 0.0 K069G 703 1.1- 0.1- K069G E12 0.4+ 0.7- Heliocentric orbital elements for pre-capture and post-capture epochs: 6R10DB9 Epoch 2005 Aug. 18.0 TT = JDT 2453600.5 MPC M 225.30083 (2000.0) P Q n 1.05913269 Peri. 128.13427 +0.17710934 -0.98416347 a 0.9531673 Node 311.66262 +0.89985648 +0.16496768 e 0.0504870 Incl. 0.56643 +0.39861084 +0.06486856 P 0.93 H 29.8 G 0.15 U 4 From 35 observations 2006 Sept. 14-24, mean residual 0".47. 6R10DB9 Epoch 2007 Dec. 6.0 TT = JDT 2454440.5 MPC M 11.79526 (2000.0) P Q n 0.94273055 Peri. 6.07991 +0.51813850 -0.85525663 a 1.0300959 Node 52.71292 +0.78428017 +0.47123104 e 0.0230204 Incl. 0.59646 +0.34122882 +0.21558620 P 1.05 H 29.8 G 0.15 U 3 From 35 observations 2006 Sept. 14-24, mean residual 0".47. Geocentric orbital elements for various epochs: Epoch T (JD) Peri. Node Incl. e a/km P/d YYYYMMDD (Referred to Earth equator) 20060910 2453989.75267 175.93052 159.14683 41.73747 0.5279155 1771882 270.0 20060912 2453989.37280 173.99074 159.15656 41.66518 0.5440170 1834539 284.5 20060914 2453989.00546 172.06066 159.14467 41.57485 0.5548014 1874152 293.7 20060916 2453988.63501 170.07211 159.09855 41.46061 0.5602719 1887182 296.8 20060918 2453988.24234 167.93481 158.99870 41.31547 0.5608224 1873341 293.5 20060920 2453987.81408 165.57095 158.82280 41.13888 0.5574954 1836628 285.0 20060924 2453986.86421 160.07227 158.16869 40.71781 0.5451733 1721563 258.6 20060926 2453986.37816 157.00408 157.66645 40.49374 0.5390055 1655651 243.9 20060928 2453985.91670 153.81646 157.03898 40.27510 0.5342190 1589758 229.5 20070410 2454184.36284 91.40639 103.65355 85.24249 0.6208880 941414 104.6 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. 71 Issued: 2006 Sept. 24, 14:56 UT