32008 Adriángalád

32008 Adriángalád
Discovery [1]
Discovered by LINEAR
Discovery site Lincoln Lab's ETS
Discovery date 29 April 2000
Designations
MPC designation 32008 Adriángalád
Named after
 Adrián Galád
(astronomer)[2]
2000 HM53 · 1994 PZ39
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 24.57 yr (8,973 days)
Aphelion 2.6152 AU
Perihelion 1.7684 AU
2.1918 AU
Eccentricity 0.1932
3.25 yr (1,185 days)
305.15°
0° 18m 13.32s / day
Inclination 6.3069°
221.84°
144.22°
Known satellites 1 [4]
Earth MOID 0.7724 AU
Physical characteristics
Dimensions 3.07 km (calculated)[3]
3.0171±0.0001 h[4]
0.24 (assumed)[3]
S [3] · V [5]
14.17±0.01 (R)[4]
14.44±0.53[5] · 14.5[1]
14.73±0.103[6][3]

    32008 Adriángalád, provisional designation 2000 HM53, is a binary Flora asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered by LINEAR at Lincoln Laboratory's Experimental Test Site on 29 April 2000. It was named for astronomer Adrián Galád. The moonlet measures approximately 40% of its primary.[2][4]

    Description

    The stony S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 1.8–2.6 AU once every 3 years and 3 months (1,185 days). Its orbit has an eccentricity of 0.19 and an inclination of 6° with respect to the ecliptic.[1] The first precovery was taken at Steward Observatory (Kitt Peak) in 1991, extending the asteroid's observation arc by 9 years prior to its discovery.[2]

    The Collaborative Asteroid Lightcurve Link (CALL) assumes an albedo of 0.24 – derived from 8 Flora, the family's largest member and namesake – and calculates a diameter of 3.07 kilometers, based on an absolute magnitude of 14.73.[3]

    A rotational light-curve for this asteroid was obtained by Czech astronomer Petr Pravec at Ondřejov Observatory in August 2007. The light-curve gave a well-defined rotation period of 3.0171 hours with a brightness amplitude of 0.19 in magnitude (U=3).[3][4]

    During the photometric observations it was revealed that Adriángalád is a binary system, with an asteroid moon orbiting it every 40.24±0.02 hours.[4] The moon's size is estimated to measure about 40% of that of its primary,[4] which would give it a diameter of 1.2 kilometers based on CALL's calculations.[3]

    The minor planet is named after Slovak astronomer Adrián Galád (b. 1970) a discoverer of minor planets and several binary asteroids himself. He is well known for his photometric observations at both Ondřejov and Modra Observatory.[2] Naming citation was published (M.P.C. 100607).[7]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 32008 Adriangalad (2000 HM53)" (2016-05-29 last obs.). Jet Propulsion Laboratory. Retrieved 2 December 2016.
    2. 1 2 3 4 "32008 Adriangalad (2000 HM53)". Minor Planet Center. Retrieved 12 August 2016.
    3. 1 2 3 4 5 6 7 8 "LCDB Data for (32008) Adriangalad". Asteroid Lightcurve Database (LCDB). Retrieved 12 August 2016.
    4. 1 2 3 4 5 6 7 Pravec, P.; Kusnirak, P.; Hornoch, K.; Vilagi, J.; Kornos, L.; Galad, A.; et al. (September 2007). "(32008) 2000 HM53". Central Bureau Electronic Telegrams (1078). Bibcode:2007CBET.1078....1P. Retrieved 12 August 2016.
    5. 1 2 Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 12 August 2016.
    6. ↑ Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 12 August 2016.
    7. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 12 August 2016.

    External links

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