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Asteroids with Satellites Database--Johnston's Archive
(6265) 1985 TW3
compiled by Wm. Robert Johnston
last updated21 September 2014--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:main belt asteroid
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 2.165872171 AU | | orbital periodP: | 3.187553141 yr
(= 1164.253785 d) | | eccentricitye: | 0.193058849 | | perihelion distanceq: | 1.74773138 AU | | aphelion distanceQ: | 2.584012959 AU | | inclinationi: | 4.1141742° | | argument of perihelionω: | 281.197228° | | ascending nodeΩ: | 45.247716° | | mean anomalyM: | 32.572448° | | perihelion passageTP: | 2014 Feb 06.65945 | | Epoch: | 2014 May 23 | | data arc: | 1979-2013(1248 obs.) | | Earth MOID: | 0.740908 AU | | Jupiter Tisserand invariantTJ: | 3.665 |
orbital data, secondary: | binary dynamical type: | A [M09a] | | semimajor axisas: | 8 km[*E] | | separation/primary radiusas/rp: | 3.3 [*E] | | separation/Hill radiusas/rH: | 0.012 [*E] | | orbital periodPs: | 0.6608± 0.0004d [H07b] | | eccentricityes: | ? | | normalized ang. mom.αL: | 1.04[M09a] |
| other data, system (combined):| absolute mag.H: | 13.4[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 4.95± 0.1 km [M11b] | | geometric albedo: | 0.286± 0.071[M11b] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 660 km [*E] |
other data, primary: | diameterdp: | 4.81± 0.1 km [*D] | | rotation periodRPp: | 2.709± 0.000h [H07b] | | amplitude in mag., rotationalΔM: | 0.36 [W14e] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 1.16± 0.1km [*D] | | diameter ratiods/dp: | 0.24± 0.02 [H07b] | | component mag. differenceΔM: | 3.1± 0.2 [*D] | | rotation periodRPs: | ? | |
|
--(6265) 1985 TW3 --discovery and notes:
Primary discovered1985 Oct 11from Palomar Observatory, California, USAby T. F. Fric and R. J. Gilbrech.Alternate designation(s): 1953 RK1, 1969 TZ4, 1979 YG9, 1985 VQ1, 1987 GD1, 1990 CX.Linked to prediscovery observations from 1979 Dec 25.Permanent number assigned 1995 Mar 17.
Companion discovered2007 Jul 15usinglightcurve observations.Announced2007 Aug 02.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Higgins, David, Oey, Julian, & Pravec, Petr 2011, Minor Planet BulletinPeriod Determination of Binary Asteroid Targets Observed at Hunters Hill Observatory: May-September 2009
- Higgins, D., Pravec, P., & Kusnirak, P. 2007, Central Bureau Electronic Telegrams(6265) 1985 TW3
©2007-2008, 2014by Wm. Robert Johnston.
Last modified21 September 2014.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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