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Asteroids with Satellites Database--Johnston's Archive
(410777) 2009 FD
compiled by Wm. Robert Johnston
last updated27 November 2015--Orbital and physical data--
(Seethis page for definitions of quantities; source codes in brackets, seethis link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
dynamical type, primary:NEA, Apollo
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 1.1631569199 AU | | orbital periodP: | 1.254461864 yr
(= 458.20084948 d) | | eccentricitye: | 0.492921576 | | perihelion distanceq: | 0.589811778 AU | | aphelion distanceQ: | 1.7365020618 AU | | inclinationi: | 3.1364499° | | argument of perihelionω: | 281.316741° | | ascending nodeΩ: | 9.475028° | | mean anomalyM: | 307.4865823° | | perihelion passageTP: | 2015 Sep 01.8380350 | | Epoch: | 2015 Jun 27 | | data arc: | 2009-2015(291 obs.) | | Earth MOID: | 0.00231683 AU | | Jupiter Tisserand invariantTJ: | 5.295 |
orbital data, secondary: | semimajor axisas: | 0.25 km[N15d] | | separation/primary radiusas/rp: | 3.0 [*D] | | separation/Hill radiusas/rH: | 0.034 [*E] | | orbital periodPs: | 0.6d [*E] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 22.1[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 0.17± 0.04 km [*D] | | geometric albedo: | 0.09[*D] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 7 km [*E] |
other data, primary: | diameterdp: | 0.15± 0.03 km [N15d] | | rotation periodRPp: | 4h [JPL] | | amplitude in mag., rotationalΔM: | ? | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 0.09± 0.03km [N15d] | | diameter ratiods/dp: | 0.6 [*D] | | component mag. differenceΔM: | 1.1 [*D] | | rotation periodRPs: | ? | |
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--(410777) 2009 FD --discovery and notes:
Primary discovered2009 Feb 24from Kitt Peak Observatory, Arizona, USAby Spacewatch Program.Permanent number assigned -.
Companion discovered2015 Oct 25 by S. P. Naidu, L. A. M. Benner, M. Brozovic, J. D. Giorgini, J. S. Jao, C. G. Lee, L. G. Snedeker, K. J. Lawrence, M. W. Busch, P. A. Taylor, J. E. Richardson, and E. G. Rivera-Valentinusingradar observations from Goldstone Observatory, California, USA; Arecibo Observatory, Puerto Rico.Announced2015 Oct [N15d].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©2015by Wm. Robert Johnston.
Last modified27 November 2015.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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