Asteroids with Satellites Database--Johnston's Archive

(85628) 1998 KV2

compiled by Wm. Robert Johnston
last updated 7 June 2020

--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: NEA, Amor


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.5926669272 AU
orbital period P: 2.0099601293 yr
(= 734.1518026 d)
eccentricity e: 0.331802439
perihelion distance q: 1.06421616 AU
aphelion distance Q: 2.121117698 AU
inclination i: 13.0301821°
argument of perihelion ω: 50.46894°
ascending node Ω: 66.789843°
mean anomaly M: 77.4085281°
perihelion passage TP: 2019 Dec 25.139971
Epoch: 2020 May 31
data arc: 1998-2020 (2084 obs.)
Earth MOID: 0.143145 AU
Jupiter Tisserand invariant TJ: 4.284


orbital data, secondary:
semimajor axis as: 1.1 km [*E]
separation/primary radius as/rp:2.8 [*E]
separation/Hill radius as/rH:0.017 [*E]
orbital period Ps: 0.5533 ± 0.0008 d [W18a]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 17.1 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 0.775 ± 0.034 km [M**]
geometric albedo: 0.461 ± 0.079 [M**]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 64 km [*E]

other data, primary:
diameter dp: 0.775 ± 0.034 km [M**]
rotation period RPp: 2.8234 ± 0.0005 h [W18a]
amplitude in mag., rotational ΔM: 0.18 ± 0.02 [W18a]
amplitude in mag., mutual events ΔM:0.13 [W18a]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: ?
diameter ratio ds/dp: ?
component mag. difference ΔM: ?
rotation period RPs: ?

-- (85628) 1998 KV2 --discovery and notes:

Primary discovered 1998 May 22 from Socorro by LINEAR Program. Permanent number assigned 2004 Aug 30.

Companion discovered 2020 Apr using lightcurve observations. Announced 2020 Apr 24.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2020 by Wm. Robert Johnston.
Last modified 7 June 2020.
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