2486 Metsähovi

2486 Metsähovi, provisional designation 1939 FY, is a stony asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 22 March 1939, by Finnish astronomer Yrjö Väisälä at the Turku Observatory.[6]

2486 Metsahovi
Discovery [1]
Discovered byY. Vaisala
Discovery siteTurku Obs.
Discovery date22 March 1939
Designations
(2486) Metsahovi
Named after
farm near Helsinki
Metsähovi Radio Obs.[2]
1939 FY · 1961 TZ
1970 FE · 1970 GN
1975 WC · 1978 SW2
main-belt · (inner)[3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc78.11 yr (28,531 days)
Aphelion2.4489 AU
Perihelion2.0874 AU
2.2682 AU
Eccentricity0.0797
3.42 yr (1,248 days)
47.042°
0° 17m 18.6s / day
Inclination8.4101°
359.97°
101.37°
Known satellites1[3][4]
Physical characteristics
Dimensions7.883±0.062 km[5]
8.42±0.03 km
12.782 km[3]
4.4518 h (0.18549 d)[1]
0.232±0.023
0.268±0.031[5]
12.5[1]

    Orbit and classification

    Metsähovi orbits the Sun at a distance of 2.1–2.4 AU once every 3 years and 5 months (1,248 days). Its orbit has an eccentricity of 0.08 and an inclination of 8° with respect to the ecliptic.[1]

    Naming

    This minor planet was named for a donated farm near Helsinki, where various institutes have established their observing stations: the Finnish Geodetic Institute for space geodesy, the University of Helsinki for astrophysics, and the Helsinki University of Technology for radio astronomy. (Also see Metsähovi Radio Observatory).[2] The approved naming citation was published by the Minor Planet Center on 26 May 1983 (M.P.C. 7946).[7]

    Satellite
    S/2006 (2486) 1
    Discovery
    Discovered byM. Pikler, M. Husarik, G. Cervak, W. Cooney, J. Gross, D. Terrell, P. Pravec, P. Kusnirak, A. Galad, J. Vilagi, L. Kornos, S. Gajdos, V. Reddy, and R. Dyvig
    Discovery date2006/12/12
    Light curve
    Orbital characteristics
    Satellite of22486 Metsähovi
    Physical characteristics
    2.6404 hours

      A moon was discovered in 2006 from lightcurve observations and announced in 2007.[4]

      References
      1. "JPL Small-Body Database Browser: 2486 Metsahovi (1939 FY)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Retrieved 18 June 2017.
      2. Schmadel, Lutz D. (2007). "(2486) Metsähovi". Dictionary of Minor Planet Names – (2486) Metsähovi. Springer Berlin Heidelberg. p. 203. doi:10.1007/978-3-540-29925-7_2487. ISBN 978-3-540-00238-3.
      3. "LCDB Data for (2486) Metsähovi". Asteroid Lightcurve Database (LCDB). Retrieved 18 June 2017.
      4. Johnston, Robert. "(2486) Metsahovi". johnstonsarchive.net. Retrieved 28 May 2015.
      5. Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 18 June 2017.
      6. "2486 Metsahovi (1939 FY)". Minor Planet Center. Retrieved 18 June 2017.
      7. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 18 June 2017.
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