Asteroids with Satellites Database--Johnston's Archive

(27568) 2000 PT6

compiled by Wm. Robert Johnston
last updated 21 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: main belt asteroid, Hungaria


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.963505051 AU
orbital period P: 2.751415861 yr
(= 1004.9546430 d)
eccentricity e: 0.027560328
perihelion distance q: 1.90939021 AU
aphelion distance Q: 2.017619894 AU
inclination i: 22.255150°
argument of perihelion ω: 77.73591°
ascending node Ω: 174.059151°
mean anomaly M: 70.11600°
perihelion passage TP: 2013 Nov 08.2683
Epoch: 2014 May 23
data arc: 1991-2013 (577 obs.)
Earth MOID: 0.949025 AU
Jupiter Tisserand invariant TJ: 3.787


orbital data, secondary:
semimajor axis as: 3.1 km [*E]
separation/primary radius as/rp:3.4 [*E]
separation/Hill radius as/rH:0.011 [*E]
orbital period Ps: 0.6815 ± 0.00012 d [W13g]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 14.6 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 1.82 ± 0.42 km [M11b]
geometric albedo: 0.931 ± 0.192 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 270 km [*E]

other data, primary:
diameter dp: 1.82 ± 0.42 km [M11b]
rotation period RPp: 3.4885 ± 0.0002 h [W13g]
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: 16.356 ± 0.003 h [W13g]

-- (27568) 2000 PT6 --discovery and notes:

Primary discovered 2004 Aug 04 from Socorro, New Mexico, USA by LINEAR. Alternate designation(s): 1991 BY3. Linked to prediscovery observations from 1991 Jan 20. Permanent number assigned 2001 Aug 04.

Companion discovered 2013 Mar 11 by B. D. Warner and R. D. Stephens using lightcurve observations. Announced 2013 Jul [W13g].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2013, 2014 by Wm. Robert Johnston.
Last modified 21 September 2014.
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