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Direct determination of NEO distance by parallax

Direct determination of NEO distance by parallax. Monty Robson John J. McCarthy Observatory, USA Peter Birtwhistle Great Shefford Observatory, UK. Kuffner Observatory, Vienna Friday 12 May 2006. 932 McCarthy Observatory New Milford, Connecticut USA. J95 Great Shefford Observatory

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Direct determination of NEO distance by parallax

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  1. Direct determination of NEO distance by parallax Monty Robson John J. McCarthy Observatory, USA Peter Birtwhistle Great Shefford Observatory, UK Kuffner Observatory, Vienna Friday 12 May 2006

  2. 932 McCarthy Observatory New Milford, Connecticut USA J95 Great Shefford Observatory West Berkshire England

  3. Dr. Brian Marsden Director, MPC Lisa Glukhovsky Winner 2003 Intel ISEF

  4. Project statistics • From 2004 11 26 until 2006 01 28 there were 24 near simultaneous observation pairs reported to the MPC of 9 different newly discovered Near Earth Asteroids • 3 NEOCP objects were observed • Closest NEO range = 0.047 AU • Most distant range = 0.313 AU • Mean range error = 0.41% (derived range vs. JPL range) • Mean residual of reported observations = 0.35" • Mean timing error = 0.36 s

  5. Observations 932 - J95 NEA Ranging Project Summary of Reported Observations

  6. 6' X 4' Image Series

  7. 2004 VB2004 11 26.957 (22:58)Range = 0.059 AU (8.8e+6 km) Parallax = 116.9" 932 J95

  8. 2004 VD17 2004 12 03.06875 (01:39) Range = 0.313 AU (4.6e+7 km) Parallax = 23.2" 932 J95

  9. 2004 VD17 2004 12 03.07361 (01:46) Range = 0.313 AU (4.6e+7 km) Parallax = 23.2" 932 J95

  10. 2004 YR 2005 Jan 02.04063 (00:58:30 UT) Range = 0.191 AU (2.9e+7 km) Parallax = 33.5" 932 J95

  11. 2005 CR37 2005 Feb 20.04306 (01:00-01:04 UT) Range = 0.090 AU (1.3e+7km) Parallax = 68.5" 932 J95

  12. 5260030 = 2005 CC37

  13. 2005 CC37 2005 02 07.02639 (00:38) Range = 0.085 AU (1.3e+7 km) Parallax = 81.6" 932 J95

  14. 2005 CC37 Chronology

  15. Reduction in uncertainty area

  16. Date RA residual Dec. Residual Observatory 2004 12 02.98280 -0.46 0.29 J95 2004 12 02.98643 0.33 -0.28 J95 2004 12 02.98982 0.12 0.04 J95 2004 12 03.01840 0.41 -0.40 J95 2004 12 03.03611 -20.14 -5.98 932 2004 12 03.03611 -0.43 0.23 J95 2004 12 03.03993 -20.17 -6.56 932 2004 12 03.03993 -0.17 0.31 J95 2004 12 03.05035 -0.17 0.25 J95 2004 12 03.05590 -19.77 -7.69 932 2004 12 03.05590 0.37 -0.43 J95 2004 XJ

  17. Date RA residual Dec. Residual Observatory 2004 12 02.98280 -0.40 0.30 J95 2004 12 02.98643 0.35 -0.29 J95 2004 12 02.98982 0.10 0.03 J95 2004 12 03.01840 0.23 -0.42 J95 2004 12 03.03611 0.20 0.14 932 2004 12 03.03611 -0.53 0.25 J95 2004 12 03.03993 0.03 -0.18 932 2004 12 03.03993 -0.24 0.34 J95 2004 12 03.05035 -0.10 0.34 J95 2004 12 03.05590 -0.18 -0.19 932 2004 12 03.05590 0.54 -0.31 J95 2004 XJ

  18. 2004 XJ

  19. Contact information: mail@mccarthyobservatory.org peter@birtwhi.demon.co.uk Thank you.

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