Asteroids with Satellites Database--Johnston's Archive

(4541) Mizuno

compiled by Wm. Robert Johnston
last updated 19 February 2017

--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


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.37977972 AU
orbital period P: 3.671175436 yr
(= 1340.922153 d)
eccentricity e: 0.02019258
perihelion distance q: 2.33172583 AU
aphelion distance Q: 2.427833611 AU
inclination i: 4.780858°
argument of perihelion ω: 25.41863°
ascending node Ω: 66.007346°
mean anomaly M: 40.07999°
perihelion passage TP: 2014 Jul 12.71070
Epoch: 2014 Dec 09
data arc: 1929-2015 (1508 obs.)
Earth MOID: 1.34839 AU
Jupiter Tisserand invariant TJ: 3.534


orbital data, secondary:
semimajor axis as: 16 km [*E]
separation/primary radius as/rp:5.1 [*E]
separation/Hill radius as/rH:0.014 [*E]
orbital period Ps: 1.237 d [W17a]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 12.8 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 6.29 ± 1.34 km [M11b]
geometric albedo: 0.338 ± 0.144 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 1100 km [*E]

other data, primary:
diameter dp: 6.29 ± 1.34 km [M11b]
rotation period RPp: 5.261 ± 0.001 h [O15b]
amplitude in mag., rotational ΔM: 0.22 [O15b]
pole direction Β, λ: ? , ?


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

-- (4541) Mizuno --discovery and notes:

Primary discovered 1989 Nov 01 from Toyota, Japan by K. Suzuki and T. Furuta. Alternate designation(s): 1989 AF, 1951 WX1, 1962 XD1, 1985 GF1. Linked to prediscovery observations from 1929 Nov 27. Permanent number assigned 1990 Jul 08.

Named 1996 Mar 05 for Yoshikane Mizuno (1954-) [MPC26762].

Companion discovered by D. Pray, P. Pravec, K. Hornoch, P. Kusnirak, J. Vrastil, H. Kucakova, Yu. N. Krugly, V. Shevchenko, R. Inasaridze, V. Ayvazian, J. Oey, W. Cooney, J. Gross, D. Terrell, I. Molotov, V. Reddy, D. Takir using lightcurve observations. Announced 2015 May 10 [P15c].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2015, 2017 by Wm. Robert Johnston.
Last modified 19 February 2017.
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