Asteroids with Satellites Database--Johnston's Archive

(4337) Arecibo

compiled by Wm. Robert Johnston
last updated 26 June 2021

--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: main belt asteroid


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 3.259185639 AU
orbital period P: 5.88387783 yr
(= 2149.126968 d)
eccentricity e: 0.090421999
perihelion distance q: 2.964483557 AU
aphelion distance Q: 3.55388772 AU
inclination i: 2.2132009°
argument of perihelion ω: 181.619254°
ascending node Ω: 41.2072397°
mean anomaly M: 5.0464913°
perihelion passage TP: 2020 Nov 16.873471
Epoch: 2020 Dec 17
data arc: 1933-2020 (2421 obs.)
Earth MOID: 1.95458 AU
Jupiter Tisserand invariant TJ: 3.172


orbital data, secondary:
semimajor axis as: 48 km (separation) [G21a]
separation/primary radius as/rp:4.0 [*E]
separation/Hill radius as/rH:0.0082 [*E]
orbital period Ps: 0.8 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 12.36 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 19.69 ± 0.24 km [M**]
geometric albedo: 0.077 ± 0.004 [M**]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 5900 km [*E]

other data, primary:
diameter dp: 24.3 ± 0.6 km [G21a]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 13 ± 1.5 km [G21a]
diameter ratio ds/dp: 0.53 [*D]
component mag. difference ΔM: 1.4 [*D]
rotation period RPs: ?

-- (4337) Arecibo --discovery and notes:

Primary discovered 1985 Apr 14 from Flagstaff, Arizona, USA by E. Bowell. Alternate designation(s): 1985 GB, 1933 HE, 1979 FR3, 1979 HG2. Linked to prediscovery observations from 1933 Apr 24. Permanent number assigned 1990 Jan 11.

Named 1990 Jun 08 for the radio observatory in Puerto Rico [MPC016445].

Companion discovered 2021 May 20 by Nosworthy, P., and D. Gault using stellar occultation observations. Announced 2021 Jun 20 [N21a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2021 by Wm. Robert Johnston.
Last modified 26 June 2021
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