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Asteroids with Satellites Database--Johnston's Archive
(3169) Ostro
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, Hungaria
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 1.891834941 AU | | orbital periodP: | 2.602154423 yr
(= 950.4369029 d) | | eccentricitye: | 0.066894323 | | perihelion distanceq: | 1.76528192 AU | | aphelion distanceQ: | 2.018387960 AU | | inclinationi: | 24.9057190° | | argument of perihelionω: | 32.448672° | | ascending nodeΩ: | 96.398591° | | mean anomalyM: | 26.055218° | | perihelion passageTP: | 2014 Mar 15.2115 | | Epoch: | 2014 May 23 | | data arc: | 1953-2014(744 obs.) | | Earth MOID: | 0.795439 AU | | Jupiter Tisserand invariantTJ: | 3.842 |
orbital data, secondary: | binary dynamical type: | B [M09a] | | semimajor axisas: | 5.2 km[D07b] | | separation/primary radiusas/rp: | 2.7 [*D] | | separation/Hill radiusas/rH: | 0.0063 [*D] | | orbital periodPs: | 0.2712± 0.00004d [D07b] | | eccentricityes: | ? | | normalized ang. mom.αL: | 9.23[M09a] |
| other data, system (combined):| absolute mag.H: | 12.73[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 5.15± 0.08 km [M11b] | | geometric albedo: | 0.423± 0.067[M11b] | | color indexU-B: | 0.306[JPL] | | color indexB-V: | 0.771[JPL] | | taxonomic type: | Xe (SMASSII) [JPL]
TS (Tholen) [JPL] | | massm: | 1.86x1014 ± 6.2x1013kg [C12a] | | densityρ: | 2.6± 0.2 g/cm3[D07b] | | Hill radiusrH: | 830 km [*D] |
other data, primary: | diameterdp: | 3.89± 0.06 km [*D] | | dimensions: | 4.4 x 3.4 x 3.2km [D07b] | | rotation periodRPp: | 6.509± 0.001h [D07b] | | amplitude in mag., rotationalΔM: | 0.35 [D05c] | | amplitude in mag., mutual eventsΔM: | 0.75 [D05c] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 3.38± 0.07km [*D] | | dimensions: | 4.8 x 2.6 x 2.4km [D07b] | | diameter ratiods/dp: | 0.87± 0.01 [D07b] | | component mag. differenceΔM: | 0.30± 0.02 [*D] | | rotation periodRPs: | ? | |
|
--(3169) Ostro --discovery and notes:
Primary discovered1981 Jun 04from Anderson Mesa Station, Arizona, USAby E. Bowell.Alternate designation(s):1981 LA.Linked to prediscovery observations from 1953 Dec 31.Permanent number assigned 1985 Jan 07.
Named 1987 Apr 14 for Steven J. Ostro (1946-2008) [MPC11749].
Companion discovered2005 Nov 05 by P. Descamps, F. Marchis, A. Peyrot, J.-P. Teng-Chuen-Yu, J. Dorseuil, B. Payet, T. Dijoux, Y. Leonie, H. Berrouachdi, C. Chion Hock, F. Bernard, C. Benard, J. Berthier, D. Hestroffer, and F. Vachierusinglightcurve observations from Institut de Mecanique Celeste et de Calcul des Ephemerides; Makes Observatory, Reunion.Announced2005 Dec 20 [D05c].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Friz, Paul & Gokhale, V. 2013, American Astronomical Society Meeting AbstractsAsteroid Shape and Spin Axis Modeling Via Light Curve Inversion
- Warner, Brian D. 2012, Minor Planet BulletinAsteroid Lightcurve Analysis at the Palmer Divide Observatory: 2012 March - June
- Warner, Brian D. 2009, Minor Planet BulletinAsteroid Lightcurve Analysis at the Palmer Divide Observatory: 2008 December - 2009 March
- Descamps, P., Marchis, F., Michalowski, T., Colas, F., Berthier, J., Vachier, F., Teng-Chuen-Yu, J.-P., Peyrot, A., Payet, B., Dorseuil, J., Léonie, Y., Dijoux, T., Berrouachdi, H., Chion Hock, C., & Benard, F. 2007, IcarusNature of the small main belt Asteroid 3169 Ostro
- Descamps, P., Marchis, F., Peyrot, A., Teng-Chuen-Yu, J.-P., Dorseuil, J., Payet, B., Dijoux, T., Leonie, Y., Berrouachdi, H., Chion Hock, C., Benard, F., Benard, C., Berthier, J., Hestroffer, D., & Vachier, F. 2005, Central Bureau Electronic Telegrams(3169) Ostro
- Bus, S. & Binzel, R. P. 2004, NASA Planetary Data System3169 Ostro CCD Spectrum
©2008, 2014by Wm. Robert Johnston.
Last modified21 September 2014.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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