2285 Ron Helin

2285 Ron Helin
Discovery [1]
Discovered by S. J. Bus
Discovery site Palomar Obs.
Discovery date 27 August 1976
Designations
MPC designation (2285) Ron Helin
Named after
 Ronald P. Helin
husband of astronomer
Eleanor F. Helin[2]
1976 QB
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 40.54 yr (14,807 days)
Aphelion 2.6815 AU
Perihelion 1.7578 AU
2.2197 AU
Eccentricity 0.2081
3.31 yr (1,208 days)
139.05°
0° 17m 52.8s / day
Inclination 5.3339°
157.85°
182.81°
Physical characteristics
Dimensions 4.11 km (calculated)[3]
12 h[4]
0.24 (assumed)[3]
S [3]
14.0[1] · 14.1[3]

    2285 Ron Helin, provisional designation 1976 QB, is a stony Florian asteroid from the inner region of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 27 August 1976, by American astronomer Schelte Bus at Palomar Observatory in San Diego County, California.[5]

    Orbit and characterization

    Ron Helin is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,208 days). Its orbit has an eccentricity of 0.21 and an inclination of 5° with respect to the ecliptic. Its rotation period is 12 hours.[1]

    Naming

    This minor planet was named in honor of Ronald Helin, husband of American astronomer Eleanor Helin (1932–2009), in appreciation of his support of the Palomar Planet-Crossing Asteroid Survey (PCAS).[2] The approved naming citation was published by the Minor Planet Center on 11 December 1981 (M.P.C. 6531).[6]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 2285 Ron Helin (1976 QB)" (2017-03-11 last obs.). Jet Propulsion Laboratory. Retrieved 19 June 2017.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (2285) Ron Helin. Springer Berlin Heidelberg. p. 186. ISBN 978-3-540-00238-3. Retrieved 19 June 2017.
    3. 1 2 3 4 5 "LCDB Data for (2285) Ron Helin". Asteroid Lightcurve Database (LCDB). Retrieved 19 June 2017.
    4. ↑ Behrend, Raoul. "Asteroids and comets rotation curves – (2285) Ron Helin". Geneva Observatory. Retrieved 19 June 2017.
    5. ↑ "2285 Ron Helin (1976 QB)". Minor Planet Center. Retrieved 19 June 2017.
    6. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 19 June 2017.
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