(4030)
Asteroids with Satellites Database--Johnston's Archive
(4030) Archenhold
compiled by Wm. Robert Johnston
last updated 30 April 2022
--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:**2.4598811302 AUorbital period **P:**3.858152446 yr (= 1409.1901809 d)eccentricity **e:**0.092868017perihelion distance **q:**2.231436849 AUaphelion distance **Q:**2.6883254116 AUinclination **i:**6.53189216°argument of perihelion **ω:**302.696394°ascending node **Ω:**342.2955458°mean anomaly **M:**131.1115247°perihelion passage **TP:2020 Feb 03.774797Epoch:2021 Jul 01data arc:1955-2021 (2819 obs.)Earth MOID:**1.22298 AUJupiter Tisserand invariant **TJ:**3.476 orbital data, secondary: semimajor axis **as:**12 km [*E]separation/primary radius **as/rp:**3.6 [*E]separation/Hill radius **as/rH:**0.010 [*E]orbital period **Ps:**0.66558 ± 0.00012 d [W21f]eccentricity es:?normalized ang. mom. αL:? | other data, system (combined): absolute mag. **H:**13.14 [MPC]slope parameter G: (0.15) [*A]effective diameter dE:6.97 ± 0.08 km [M11b]geometric albedo:0.251 ± 0.020 [M11b]color index U-B:?color index B-V:?taxonomic type:?mass m:?density ρ: (1.6 g/cm3) [*A]Hill radius **rH:**1200 km [*E] other data, primary: diameter **dp:**6.66 ± 0.08 km [*D]rotation period **RPp:**3.27292 ± 0.00004 h [W21f]amplitude in mag., rotational **ΔM:**0.18 [W21f]amplitude in mag., mutual events **ΔM:**0.125 ±0.025 [W21f]pole direction Β, λ:? , ? other data, secondary: diameter **ds:**>2.06 km [*D]diameter ratio **ds/dp:**>0.31 [W21b]component mag. difference ΔM:<2.54 [*D]rotation period RPs:? |
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-- (4030) Archenhold --discovery and notes:
Primary discovered 1984 Mar 02 from European Southern Observatory, La Silla, Chile by H. Debehogne. Alternate designation(s): 1984 EO1, 1970 SO, 1980 DP2, 1980 ET. Linked to prediscovery observations from 1955 Nov 11. Permanent number assigned 1989 Mar 22.
Named 1999 Apr 02 for Friedrich Simon Archenhold (1861-1939) [MPC034340].
Companion discovered 2020 Aug 28 by B. D. Warner, R. D. Stephens, and A. W. Harris using lightcurve observations from Center for Solar System Studies, Landers, California, USA. Announced 2021 Jan [W21f].
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© 2021, 2022 by Wm. Robert Johnston.
Last modified 30 April 2022.
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