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Asteroids with Satellites Database--Johnston's Archive

(2825) Crosby

compiled by Wm. Robert Johnston
last updated27 May 2019

--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:2.245836727 AU
orbital periodP:3.36563697 yr
(= 1229.3221204 d)
eccentricitye:0.173473099
perihelion distanceq:1.85624447 AU
aphelion distanceQ:2.6354289833 AU
inclinationi:3.5211341°
argument of perihelionω:81.47056°
ascending nodeΩ:329.512063°
mean anomalyM:69.170053°
perihelion passageTP:2016 Jun 24.799234
Epoch:2017 Feb 16
data arc:1938-2017(1599 obs.)
Earth MOID:0.871005 AU
Jupiter Tisserand invariantTJ:3.608

orbital data, secondary:

semimajor axisas:7.8 km[*E]
orbital periodPs:0.5979± 0.0002d [P17d]
eccentricityes:?
normalized ang. mom.αL:?
other data, system (combined):
absolute mag.H:13.2[MPC]
slope parameterG:(0.15) [*A]
effective diameterdE:5.06± 0.15 km [M11b]
geometric albedo:0.301± 0.039[M11b]
color indexU-B:?
color indexB-V:?
taxonomic type:?
massm:?
densityρ:(1.6 g/cm3) [*A]
Hill radiusrH:720 km [*E]

other data, primary:

diameterdp:4.98± 0.15 km [*D]
rotation periodRPp:2.8135± 0.0002h [P16d]
amplitude in mag., rotationalΔM:0.08 [P16d]
amplitude in mag., mutual eventsΔM:0.06 ±0.02 [P16d]
pole directionΒ, λ:?,?

other data, secondary:

diameterds:>0.9km [*D]
diameter ratiods/dp:>0.18 [P16d]
component mag. differenceΔM:<3.7 [*D]
rotation periodRPs:?

--(2825) Crosby --discovery and notes:

Primary discovered1938 Sep 19from Johannesburg, South Africaby C. Jackson.Alternate designation(s):1938 SD1, 1948 RA, 1972 XA1.Linked to prediscovery observations from 1938 Sep 16.Permanent number assigned 1983.

Named 1993 Sep 01 for Harry Lillis (Bing) Crosby (1903-1977) [MPC022496].

Companion discovered2017 Feb 17 by D. Pray, P. Pravec, J. Vrastil, K. Hornoch, V. Benishek, W. Cooney, B. Flanagan, B. Pellerin, R. Montaigut, A. Leroy, A. Marchini, R. Papini, F. Salvaggiousinglightcurve observations.Announced2017 Mar 09 [P17d].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

©2017, 2019by Wm. Robert Johnston.
Last modified27 May 2019.
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