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Asteroids with Satellites Database--Johnston's Archive
(5381) Sekhmet
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:NEA, Aten
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 0.947461319 AU | | orbital periodP: | 0.922253761 yr
(= 336.8531863 d) | | eccentricitye: | 0.29623718 | | perihelion distanceq: | 0.66678805 AU | | aphelion distanceQ: | 1.228134584 AU | | inclinationi: | 48.969357° | | argument of perihelionω: | 37.435861° | | ascending nodeΩ: | 58.5495966° | | mean anomalyM: | 97.948748° | | perihelion passageTP: | 2014 Feb 20.34903 | | Epoch: | 2014 May 23 | | data arc: | 1991-2014(201 obs.) | | Earth MOID: | 0.112501 AU | | Jupiter Tisserand invariantTJ: | 6.027 |
orbital data, secondary: | binary dynamical type: | A [P07f] | | semimajor axisas: | 1.54± 0.12 km[N03a] | | separation/primary radiusas/rp: | 3.1 [*D] | | separation/Hill radiusas/rH: | 0.027 [*D] | | orbital periodPs: | 0.5208± 0.012d [N03a] | | eccentricityes: | ? | | normalized ang. mom.αL: | 1.07[P07f] |
| other data, system (combined):| absolute mag.H: | 16.5[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 1.04 km [*D] | | geometric albedo: | 0.25± 0.03[D04a] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | 1.07x1012kg [*D] | | densityρ: | 1.98± 0.65 g/cm3[N03a] | | Hill radiusrH: | 56 km [*D] |
other data, primary: | diameterdp: | 1± 0.05 km [N03a] | | rotation periodRPp: | 2.7± 0.4h [N03a] | | amplitude in mag., rotationalΔM: | 0.10 [P03c] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 0.3± 0.05km [N03a] | | diameter ratiods/dp: | 0.3± 0.052 [*D] | | component mag. differenceΔM: | 2.6 [*D] | | rotation periodRPs: | 10± 2h [N03a] | |
|
--(5381) Sekhmet --discovery and notes:
Primary discovered1991 May 14from Palomar Observatory, California, USAby C. S. Shoemaker.Alternate designation(s):1991 JY.Permanent number assigned 1992 Nov 10.
Named 1995 Mar 17 for the mythological Egyptian goddess [MPC24917].
Companion discovered2003 May 08 by M. C. Nolan, E. S. Howell, A. S. Rivkin, and C. D. Neishusingradar observations from Arecibo Observatory, Puerto Rico.Announced2003 Jul 06 [N03c].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Delbo, Marco, Walsh, Kevin, Mueller, Michael, Harris, Alan W., & Howell, Ellen S. 2011, IcarusThe cool surfaces of binary near-Earth asteroids
- Davies, John K., Harris, Alan W., Rivkin, Andrew S., Wolters, Stephen D., Green, Simon F., McBride, Neil, Mann, Rita K., & Kerr, Tom H. 2007, IcarusNear-infrared spectra of 12 Near-Earth Objects
- Connors, M., Brasser, R., Stacey, R. G., & Wiegert, P. 2004, Bulletin of the American Astronomical SocietyInner Solar System Dynamical Analogues for Plutinos
- Neish, C. D., Nolan, M. C., Howell, E. S., & Rivkin, A. S. 2003, Bulletin of the American Astronomical SocietyRadar Observations of Binary Asteroid 5381 Sekhmet
- Nolan, M. C., Howell, E. S., Rivkin, A. S., & Neish, C. D. 2003, International Astronomical Union Circular(5381) Sekhmet
- Pilcher, Frederick 2003, Minor Planet BulletinMinor planets at unusually favorable elongations in 2003
- Shoemaker, E., Olmstead, C. M., Shoemaker, C., King, T., McCrosky, R. E., Shao, C.-Y., McNaught, R., & Steel, D. 1991, International Astronomical Union Circular1991 JY
- Green, D. W. E. 1991, International Astronomical Union Circular1991 JY
- Shoemaker, E. M., Shoemaker, C. S., Olmstead, C. M., Lawler, K. A., & McNaught, R. H. 1991, International Astronomical Union Circular1991 JY
©2003-2008, 2014by Wm. Robert Johnston.
Last modified21 September 2014.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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