Asteroids with Satellites Database--Johnston's Archive

(4435) Holt

compiled by Wm. Robert Johnston
last updated 23 September 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: 16 km [*E]
separation/primary radius as/rp:6.7 [*D]
separation/Hill radius as/rH:0.028 [*D]
orbital period Ps: 1.777 ± 0.002 d [S18d]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 13.2 [MPC]
slope parameter G: (0.24) [*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: 580 km [*E]

other data, primary:
diameter dp: 4.76 km [*D]
rotation period RPp: 2.867 ± 0.0002 h [S18d]
amplitude in mag., rotational ΔM: 0.3 ± 0.02 [S18d]
amplitude in mag., mutual events ΔM:0.15 ±0.02 [S18d]
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: >1.62 km [*D]
diameter ratio ds/dp: >0.34 [S18d]
component mag. difference ΔM: <2.3 [*D]
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 2017 Aug 30 by R. D. Stephens, D. Pray, P. Pravec, P. Kusnirak, H. Kucakova, K. Hornoch, and V. Benishek using lightcurve observations from Center for Solar System Studies, Landers, California, USA; Sugarloaf Mountain Observatory, Massachusetts, USA; Belgrade Astronomical Observatory, Belgrade, Serbia. Announced 2018 Jan 27 [S18g].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2018 by Wm. Robert Johnston.
Last modified 23 September 2018.
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