Asteroids with Satellites Database--Johnston's Archive

(79472) Chiorny

compiled by Wm. Robert Johnston
last updated 21 June 2016

--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, Hungaria


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.962122802 AU
orbital period P: 2.748511000 yr
(= 1003.893643 d)
eccentricity e: 0.08009309
perihelion distance q: 1.80497032 AU
aphelion distance Q: 2.119275289 AU
inclination i: 24.3433149°
argument of perihelion ω: 331.587361°
ascending node Ω: 93.359969°
mean anomaly M: 29.891378°
perihelion passage TP: 2014 Feb 28.6450
Epoch: 2014 May 23
data arc: 1993-2013 (593 obs.)
Earth MOID: 0.832558 AU
Jupiter Tisserand invariant TJ: 3.767


orbital data, secondary:
semimajor axis as: 9 km [*E]
separation/primary radius as/rp:5 [*E]
separation/Hill radius as/rH:0.017 [*E]
orbital period Ps: 1.081 ± 0.0008 d [W12c]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 14.7 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 3.79 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: 530 km [*E]

other data, primary:
diameter dp: 3.79 km [*E]
rotation period RPp: 2.8802 ± 0.0002 h [W12c]
amplitude in mag., rotational ΔM: 0.21 ± 0.02 [W12c]
amplitude in mag., mutual events ΔM:0.12 [W12c]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: ?
diameter ratio ds/dp: 0.32 ± 0.03 [W12c]
component mag. difference ΔM: 2.5 ± 0.2 [*D]
rotation period RPs: ?

-- (79472) Chiorny --discovery and notes:

Primary discovered 1998 Jan 06 from Sormano, Italy by A. Testa and P. Chiavenna. Linked to prediscovery observations from 1993 Apr 26. Permanent number assigned 2004 May 04.

Companion discovered 2012 Mar 17 by B. D. Warner using lightcurve observations from Palmer Divide Observatory, Colorado Springs, Colorado, USA. Announced 2012 Oct [W12c].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2012-2014, 2016 by Wm. Robert Johnston.
Last modified 21 June 2016.
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