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Asteroids with Satellites Database--Johnston's Archive
(24495) Degroff
compiled by Wm. Robert Johnston
last updated9 October 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:Mars crossing asteroid
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 2.1712762226 AU | | orbital periodP: | 3.199490441 yr
(= 1168.6138835 d) | | eccentricitye: | 0.360820359 | | perihelion distanceq: | 1.387835557 AU | | aphelion distanceQ: | 2.9547168877 AU | | inclinationi: | 29.7354434° | | argument of perihelionω: | 133.110302° | | ascending nodeΩ: | 75.3218974° | | mean anomalyM: | 106.3990801° | | perihelion passageTP: | 2020 Jul 20.612661 | | Epoch: | 2021 Jul 01 | | data arc: | 1953-2021(1418 obs.) | | Earth MOID: | 0.46046 AU | | Jupiter Tisserand invariantTJ: | 3.443 |
orbital data, secondary: | semimajor axisas: | ? | | orbital periodPs: | ? | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 14.94[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 3.4 km [*E] | | geometric albedo: | (0.16) [*A] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 310 km [*E] |
other data, primary: | diameterdp: | 2.83 km [A17c] | | axial ratiosa/b, b/c: | 1.6, ? [S17c] | | rotation periodRPp: | 24.083± 0.005h [S17c] | | amplitude in mag., rotationalΔM: | 0.58± 0.02 [S17c] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | ? | | diameter ratiods/dp: | ? | | component mag. differenceΔM: | ? | | rotation periodRPs: | 2.7375± 0.0001h [S17c] | |
|
--(24495) Degroff --discovery and notes:
Primary discovered2001 Jan 02from Anderson Mesa Station, Flagstaff, Arizona, USAby LONEOS Program.Alternate designation(s):2001 AV1.Linked to prediscovery observations from 1953 Feb 14.Permanent number assigned 2001 Apr 08.
Named 2017 Dec 03 for Bill DeGroff (1956-) [MPC107739].
Companion discovered2017 May 04 by R. D. Stephens, B. D. Warner, A. Aznar Macias, and V. Benishekusinglightcurve observations.Announced2017 Sep [S17c].
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--Links to ADS abstracts:
©2017-2019, 2021by Wm. Robert Johnston.
Last modified9 October 2021.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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