Asteroids with Satellites Database--Johnston's Archive

(99913) 1997 CZ5

compiled by Wm. Robert Johnston
last updated 20 September 2014

--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: 2.293957933 AU
orbital period P: 3.474452482 yr
(= 1269.0437690 d)
eccentricity e: 0.397212393
perihelion distance q: 1.38276941 AU
aphelion distance Q: 3.205146452 AU
inclination i: 24.902234°
argument of perihelion ω: 169.191725°
ascending node Ω: 288.033698°
mean anomaly M: 357.525911°
perihelion passage TP: 2014 May 31.72146
Epoch: 2014 May 23
data arc: 1992-2014 (728 obs.)
Earth MOID: 0.403455 AU
Jupiter Tisserand invariant TJ: 3.374

orbital data, secondary:
binary dynamical type:A [M09a]
semimajor axis as: 11 km [*E]
separation/primary radius as/rp:3.2 [*E]
separation/Hill radius as/rH:0.015 [*E]
orbital period Ps: 0.6117 d [H11a]
eccentricity es: ?
normalized ang. mom. αL: 0.84 [M09a]

other data, system (combined):
absolute mag. H: 13.4 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 6.89 km [*E]
geometric albedo: (0.16 ) [*A]
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: 730 km [*E]

other data, primary:
diameter dp: 6.77 km [*E]
rotation period RPp: 2.83507 ± 0.00002 h [H11a]
amplitude in mag., rotational ΔM: 0.19 ± 0.02 [H11a]
amplitude in mag., mutual events ΔM:0.038 ±0.02 [H11a]
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: 1.29 km [*E]
diameter ratio ds/dp: 0.19 ± 0.02 [H11a]
component mag. difference ΔM: 3.6 ± 0.2 [*D]
rotation period RPs: ?

-- (99913) 1997 CZ5 --discovery and notes:

Primary discovered 1997 Feb 07 from Haleakala, Hawaii, USA by NEAT. Alternate designation(s): 1999 NQ54. Linked to prediscovery observations from 1992 Aug 02. Permanent number assigned 2005 Jun 22.

Companion discovered 2010 Dec 31 by D. Higgins, P. Pravec, P. Kusnirak, K. Hornoch, J. Pollock, W. Cooney, J. Gross, D. Terrell, J. Oey, J. Brinsfield, D. E. Reichart, K. M. Ivarsen, J. B. Haislip, A. LaCluyze, and R. Durkee using lightcurve observations from Canberra, Australia; Ondrejov Observatory, Czech Republic; Appalachian State University, North Carolina, USA; Sonoita Research Observatory, Sonoita, Arizona, USA; Leura, New South Wales, Australia; Via Capote Observatory, Thousand Oaks, California, USA; University of North Carolina, Chapel Hill; Shed of Science Observatory, Minneapolis, Minnesota, USA. Announced 2011 Feb 03 [H11a].

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--Links to ADS abstracts:

© 2011-2012, 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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