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Asteroids with Satellites Database--Johnston's Archive
(310560) 2001 QL142
compiled by Wm. Robert Johnston
last updated3 May 2022--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, Apollo(PHA)
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 1.0493912393 AU | | orbital periodP: | 1.0750145778 yr
(= 392.6490746 d) | | eccentricitye: | 0.49898127 | | perihelion distanceq: | 0.52576467 AU | | aphelion distanceQ: | 1.5730178126 AU | | inclinationi: | 26.606544° | | argument of perihelionω: | 72.122191° | | ascending nodeΩ: | 165.576929° | | mean anomalyM: | 243.633819° | | perihelion passageTP: | 2021 Nov 04.919648 | | Epoch: | 2021 Jul 01 | | data arc: | 1974-2017(213 obs.) | | Earth MOID: | 0.0481568 AU | | Jupiter Tisserand invariantTJ: | 5.654 |
orbital data, secondary: | semimajor axisas: | 1.1 km[*E] | | separation/primary radiusas/rp: | 3.4 [*E] | | separation/Hill radiusas/rH: | 0.041 [*E] | | orbital periodPs: | 0.6496± 0.0004d [P21i] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 17.7[MPC]
18.07 ± 0.19 [P21i] | | slope parameterG: | (0.24) [*A] | | effective diameterdE: | 0.65± 0.17 km [M17c] | | geometric albedo: | 0.313 ± 0.221 [M17c] | | color indexU-B: | ? | | color indexB-V: | ? | | color indexV-R: | 0.428 ± 0.013 [P21i] | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 27 km [*D] |
other data, primary: | diameterdp: | 0.65± 0.17 km [M17c] | | rotation periodRPp: | 2.97387± 0.00008h [P21i] | | amplitude in mag., rotationalΔM: | 0.15 [P21i] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | ? | | diameter ratiods/dp: | ? | | component mag. differenceΔM: | ? | | rotation periodRPs: | ? | |
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--(310560) 2001 QL142 --discovery and notes:
Primary discovered2001 Aug 24from Anderson Mesa Station, Flagstaff, Arizona, USAby LONEOS Program.Linked to prediscovery observations from 1974 Oct 14.Permanent number assigned 2012 Jan 09.
Companion discovered2017 Sepusingradar observations.Announced2017 Sep.
--Links, more technical:
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--Links to ADS abstracts:
©2017-2021, 2022by Wm. Robert Johnston.
Last modified3 May 2022.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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