Asteroids with Satellites Database--Johnston's Archive

(24495) Degroff

compiled by Wm. Robert Johnston
last updated 12 April 2018

--Orbital and physical data--

(See this page for definitions of quantities; source codes in brackets, see this 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 axis a: 2.1709179572 AU
orbital period P: 3.198638178 yr
(= 1168.3246597 d)
eccentricity e: 0.361026194
perihelion distance q: 1.38715971 AU
aphelion distance Q: 2.954676205 AU
inclination i: 29.7425416°
argument of perihelion ω: 133.045875°
ascending node Ω: 75.35388°
mean anomaly M: 36.4259154°
perihelion passage TP: 2017 May 08.785291
Epoch: 2017 Sep 04
data arc: 1953-2017 (853 obs.)
Earth MOID: 0.460532 AU
Jupiter Tisserand invariant TJ: 3.443


orbital data, secondary:
semimajor axis as: ?
orbital period Ps: ?
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 14.9 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 3.5 km [*E]
geometric albedo: (0.16 ) [*A]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 380 km [*E]

other data, primary:
diameter dp: 3.5 km []
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: ?
diameter ratio ds/dp: ?
component mag. difference ΔM: ?
rotation period RPs: ?

-- (24495) Degroff --discovery and notes:

Primary discovered 2001 Jan 02 from Anderson Mesa Station, Arizona, USA by LONEOS Program. Alternate designation: 2001 AV1. Linked to prediscovery observations from 1953 Feb 14. Permanent number assigned 2001 Apr 08.

Companion discovered 2017 using lightcurve observations. Announced 2017 Sep.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2017, 2018 by Wm. Robert Johnston.
Last modified 12 April 2018.
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