39741 Komm

39741 Komm, provisional designation 1997 AT6, is a stony asteroid and eccentric Mars-crosser from the innermost regions of the asteroid belt, approximately 2 kilometers in diameter. It was discovered on 9 January 1997, by American astronomer Roy Tucker at Goodricke-Pigott Observatory in Tucson, Arizona, United States.[4] The asteroid was named for American helioseismologist Rudolf Komm.[2]

39741 Komm
Discovery [1]
Discovered byR. Tucker
Discovery siteGoodricke–Pigott Obs.
Discovery date9 January 1997
Designations
(39741) Komm
Named after
Rudolf Komm
(helioseismologist)[2]
1997 AT6 · 1999 LM28
Mars crosser [1][3][4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc20.15 yr (7,358 days)
Aphelion2.9461 AU
Perihelion1.4189 AU
2.1825 AU
Eccentricity0.3499
3.22 yr (1,178 days)
175.16°
0° 18m 20.52s / day
Inclination6.3383°
225.71°
126.19°
Earth MOID0.4267 AU
Physical characteristics
Dimensions2.15 km (calculated)[3]
5.95±0.01 h[5]
0.20 (assumed)[3]
S [3]
15.7[1][3]

    Orbit and classification

    Komm orbits the Sun in the inner main-belt at a distance of 1.4–2.9 AU once every 3 years and 3 months (1,178 days). Its orbit has an eccentricity of 0.35 and an inclination of 6° with respect to the ecliptic.[1] As no precoveries were taken, the asteroid's observation arc begins with its official discovery observation.[4]

    Physical characteristics

    Rotation and shape

    In October 2009, the first and so far only rotational lightcurve of Komm was obtained by French amateur astronomer René Roy. It gave a well-defined rotation period of 5.95±0.01 hours with a high brightness variation of 0.83 magnitude, indicative of a non-spheroidal shape (U=3).[5]

    Diameter and albedo

    The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 2.15 kilometers with an absolute magnitude of 15.7.[3]

    Naming

    This minor planet was named after Rudolf Walter Komm (born 1957), an American helioseismologist, who contributed in the study of solar activity.[2] The official naming citation was published by the Minor Planet Center on 6 August 2003 (M.P.C. 49283).[6]

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    References
    1. "JPL Small-Body Database Browser: 39741 Komm (1997 AT6)" (2017-03-03 last obs.). Jet Propulsion Laboratory. Retrieved 28 June 2017.
    2. Schmadel, Lutz D. (2006). "(39741) Komm [2.18, 0.35, 6.3]". Dictionary of Minor Planet Names – (39741) Komm, Addendum to Fifth Edition: 2003–2005. Springer Berlin Heidelberg. p. 206. doi:10.1007/978-3-540-34361-5_2433. ISBN 978-3-540-34361-5.
    3. "LCDB Data for (39741) Komm". Asteroid Lightcurve Database (LCDB). Retrieved 17 November 2016.
    4. "39741 Komm (1997 AT6)". Minor Planet Center. Retrieved 17 November 2016.
    5. Behrend, Raoul. "Asteroids and comets rotation curves – (39741) Komm". Geneva Observatory. Retrieved 17 November 2016.
    6. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 November 2016.

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