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Asteroids with Satellites Database--Johnston's Archive
(2691) Sersic
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: | 2.244304321 AU | | orbital periodP: | 3.362256337 yr
(= 1228.0641270 d) | | eccentricitye: | 0.112147656 | | perihelion distanceq: | 1.99261085 AU | | aphelion distanceQ: | 2.495997791 AU | | inclinationi: | 3.5944525° | | argument of perihelionω: | 277.198200° | | ascending nodeΩ: | 319.897709° | | mean anomalyM: | 320.859247° | | perihelion passageTP: | 2014 Oct 03.5204 | | Epoch: | 2014 May 23 | | data arc: | 1950-2014(1461 obs.) | | Earth MOID: | 0.984655 AU | | Jupiter Tisserand invariantTJ: | 3.621 |
orbital data, secondary: | semimajor axisas: | 12 km[*E] | | separation/primary radiusas/rp: | 4.8 [*E] | | separation/Hill radiusas/rH: | 0.015 [*E] | | orbital periodPs: | 1.117± 0.0004d [O11a] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 13.1[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 5.44± 0.12 km [M11b] | | geometric albedo: | 0.261± 0.062[M11b] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 790 km [*E] |
other data, primary: | diameterdp: | 5± 0.11 km [*D] | | rotation periodRPp: | 3.8811± 0.0003h [O11a] | | amplitude in mag., rotationalΔM: | 0.21 [O11a] | | amplitude in mag., mutual eventsΔM: | 0.45 [O11a] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 2.15± 0.11km [*D] | | diameter ratiods/dp: | >0.43± 0.02 [O11a] | | component mag. differenceΔM: | 1.8± 0.1 [*D] | | rotation periodRPs: | ? | |
|
--(2691) Sersic --discovery and notes:
Primary discovered1974 May 18from Felix Aguilar Observatory, El Leoncito, Argentinaby ?.Alternate designation(s):1974 KB, 1938 UU, 1978 QR1.Linked to prediscovery observations from 1950 Mar 21.Permanent number assigned 1982.
Named 1989 Feb 20 for Jose Luis Sersic (1933-1993) [MPC14207].
Companion discovered2011 Jun 03 by J. Oey, P. Pravec, P. Kusnirak, N. Morales, A. Thirouin, J. Pollock, D. E. Reichart, K. M. Ivarsen, J. B. Haislip, and A. LaCluyzeusinglightcurve observations from Leura, New South Wales, Australia; Ondrejov Observatory, Czech Republic; Instituto de Astrofisica de Andalucia; Appalachian State University, North Carolina, USA; University of North Carolina at Chapel Hill, North Carolina, USA.Announced2011 Jul 16 [O11a].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Ditteon, Richard, Horn, Lauren, Kamperman, Amy, Vorjohan, Bradley, & Kirkpatrick, Elaine 2012, Minor Planet BulletinAsteroid Lightcurve Analysis at the Oakley Souther Sky Observatory: 2011 April-May
- Oey, J., Pravec, P., Kusnirak, P., Morales, N., Thirouin, A., Pollock, J., Reichart, D. E., Ivarsen, K. M., Haislip, J. B., & Lacluyze, A. 2011, Central Bureau Electronic Telegrams(2691) Sersic
©2011-2012, 2014by Wm. Robert Johnston.
Last modified21 September 2014.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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