Asteroids with Satellites Database--Johnston's Archive

(1727) Mette

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: Mars crossing asteroid, Hungaria


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.854222431 AU
orbital period P: 2.524939334 yr
(= 922.2340919 d)
eccentricity e: 0.101729224
perihelion distance q: 1.66559382 AU
aphelion distance Q: 2.042851040 AU
inclination i: 22.8969492°
argument of perihelion ω: 313.012551°
ascending node Ω: 133.045118°
mean anomaly M: 214.296130°
perihelion passage TP: 2015 May 31.25854
Epoch: 2014 May 23
data arc: 1955-2014 (1275 obs.)
Earth MOID: 0.716985 AU
Jupiter Tisserand invariant TJ: 3.9


orbital data, secondary:
semimajor axis as: 21 km [*E]
separation/primary radius as/rp:4.1 [*E]
separation/Hill radius as/rH:0.016 [*E]
orbital period Ps: 0.8746 ± 0.0008 d [W13h]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 12.5 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 10.4 km [*E]
geometric albedo: (0.16 ) [*A]
color index U-B: ?
color index B-V: ?
taxonomic type: S (Tholen) [JPL]
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 1300 km [*E]

other data, primary:
diameter dp: 10.18 km [*D]
rotation period RPp: 2.98109 ± 0.00007 h [W13h]
amplitude in mag., rotational ΔM: 0.33 ± 0.01 [W13h]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 2.14 km [*D]
diameter ratio ds/dp: 0.21 ± 0.02 [W13h]
component mag. difference ΔM: 3.4 ± 0.2 [*D]
rotation period RPs: ?

-- (1727) Mette --discovery and notes:

Primary discovered 1965 Jan 25 from Bloemfontein, South Africa by A. D. Andrews. Alternate designation(s): 1965 BA, 1955 DC. Linked to prediscovery observations from 1955 Feb 23. Permanent number assigned -.

Named 1980 Feb 01 for Mette Andrews [MPC5183].

Companion discovered 2013 Jan 17 using lightcurve observations. Announced 2013 Feb 05.

--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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