Asteroids with Satellites Database--Johnston's Archive

(4435) Holt

compiled by Wm. Robert Johnston
last updated 31 January 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: 2.3172177467 AU
orbital period P: 3.527363924 yr
(= 1288.3940063 d)
eccentricity e: 0.335194273
perihelion distance q: 1.54049963 AU
aphelion distance Q: 3.093935865 AU
inclination i: 21.905298°
argument of perihelion ω: 110.07573°
ascending node Ω: 330.932641°
mean anomaly M: 319.212207°
perihelion passage TP: 2018 Jan 27.974301
Epoch: 2017 Sep 04
data arc: 1978-2017 (845 obs.)
Earth MOID: 0.681262 AU
Jupiter Tisserand invariant TJ: 3.412


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

other data, system (combined):
absolute mag. H: 13.2 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 5.03 ± 1.17 km [N16*]
geometric albedo: 0.28 ± 0.15 [N16*]
color index U-B: ?
color index B-V: ?
taxonomic type: S (SMASSII) [JPL]
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 600 km [*E]

other data, primary:
diameter dp: 5.03 ± 1.17 km [N16*]
rotation period RPp: 13.32 h [LC17*]
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: ?

-- (4435) Holt --discovery and notes:

Primary discovered 1983 Jan 13 from Palomar Observatory, California, USA by C. S. Shoemaker. Alternate designation(s): 1983 AG2, 1978 PZ2. Linked to prediscovery observations from 1978 Aug 08. Permanent number assigned 1990 Apr 10.

Named 1991 Jan 30 for Henry H. Holt (1929-) [MPC017656].

Companion discovered using lightcurve observations. Announced 2018 Jan 27.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2018 by Wm. Robert Johnston.
Last modified 31 January 2018.
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