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Asteroids with Satellites Database--Johnston's Archive
(5772) Johnlambert
compiled by Wm. Robert Johnston
last updated25 September 2021--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: | 2.5551683175 AU | | orbital periodP: | 4.0844094352 yr
(= 1491.8587218 d) | | eccentricitye: | 0.128357743 | | perihelion distanceq: | 2.227192678 AU | | aphelion distanceQ: | 2.883143957 AU | | inclinationi: | 12.23462757° | | argument of perihelionω: | 8.1386707° | | ascending nodeΩ: | 275.2552603° | | mean anomalyM: | 15.3433957° | | perihelion passageTP: | 2021 Apr 28.416170 | | Epoch: | 2021 Jul 01 | | data arc: | 1955-2021(2512 obs.) | | Earth MOID: | 1.21111 AU | | Jupiter Tisserand invariantTJ: | 3.395 |
orbital data, secondary: | semimajor axisas: | 14 km[*E] | | separation/primary radiusas/rp: | 3.6 [*E] | | separation/Hill radiusas/rH: | 0.010 [*E] | | orbital periodPs: | 0.7492± 0.0004d [B21e] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 13.07[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 8 km [*E] | | geometric albedo: | (0.16) [*A] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 1400 km [*E] |
other data, primary: | diameterdp: | 7.81 km [*E] | | rotation periodRPp: | 3.0782± 0.0002h [B21e] | | amplitude in mag., rotationalΔM: | 0.17 [B21e] | | amplitude in mag., mutual eventsΔM: | 0.05 [B21e] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | >1.72km [*E] | | diameter ratiods/dp: | >0.22 [B21e] | | component mag. differenceΔM: | <3.3 [*D] | | rotation periodRPs: | ? | |
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--(5772) Johnlambert --discovery and notes:
Primary discovered1988 Jun 15from Palomar Observatory, California, USAby E. F. Helin.Alternate designation(s):1988 LB, 1984 MA.Linked to prediscovery observations from 1955 Mar 24.Permanent number assigned 1993 Nov 29.
Named 2000 Jan 24 for John V. Lambert (1945-) [MPC039195].
Companion discovered2021 Aug 08 by V. Benishek, P. Pravecusinglightcurve observations from Sopot Observatory, Serbia.Announced2021 Sep 19 [B21e].
--Links, more technical:
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--Links to ADS abstracts:
©2021by Wm. Robert Johnston.
Last modified25 September 2021.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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