1605 Milankovitch

1605 Milankovitch
Discovery [1]
Discovered by P. Djurkovic
Discovery site Uccle – Belgium
Discovery date 13 April 1936
Designations
MPC designation 1605 Milankovitch
Named after
 Milutin Milanković
(Serbian scientist)[2]
1936 GA · 1925 DC
1931 KB · 1938 ST
1941 FA · 1946 FF
1949 UC1 · 1968 KP
A907 UB
main-belt · Eos [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 80.17 yr (29,281 days)
Aphelion 3.2472 AU
Perihelion 2.7785 AU
3.0129 AU
Eccentricity 0.0778
5.23 yr (1,910 days)
235.31°
0° 11m 18.6s / day
Inclination 10.563°
173.74°
276.27°
Physical characteristics
Dimensions 27.78±3.57 km[4]
29.404±0.197 km[5]
32.38 km (derived)[3]
32.47±1.5 km (IRAS:6)[6]
33.80±0.42 km[7]
11.60±0.05 h[8]
11.63±0.03 h[9]
0.1401 (derived)[3]
0.142±0.004[7]
0.1529±0.015 (IRAS:6)[6]
0.1902±0.0991[5]
0.235±0.322[4]
M [5] · LS [10] · S [3]
9.97[4]
10.1[5][6][7]
10.19±0.29[10]
10.2[1][3]

    1605 Milankovitch, provisional designation 1936 GA, is an Eoan asteroid from the outer region of the asteroid belt, approximately 32 kilometers in diameter. It was discovered on 13 April 1936, by Serbian astronomer Petar Đurković at the Royal Observatory of Belgium in Uccle, Belgium.[11] Two nights later, the body was independently discovered by Polish astronomers Jan Piegza and Tadeusz Banachiewicz at Cracow and Warsaw, respectively.[2]

    The asteroid is a member of the Eos family, an orbital group of more than 4,000 asteroids, which are well known for mostly being of stony composition. It is classified as a metallic M-type by the NEOWISE mission, as a stony S-type by the Collaborative Asteroid Lightcurve Link (CALL), and as a LS-type – a transitional form between plain S-types and rare L-type asteroids – by the large-scale survey performed by the Pan-STARRS1 telescope.[10]

    It orbits the Sun at a distance of 2.8–3.2 AU once every 5 years and 3 months (1,910 days). Its orbit has an eccentricity of 0.08 and an inclination of 11° with respect to the ecliptic.[1] The first observation was made at the U.S Taunton Observatory (803) in 1907. However it remained unused – as did the subsequent observations at the Simeiz and Lowell observatories in 1925 and 1931, respectively – and the asteroid's observation arc begins with its discovery observation in 1936.[11]

    In April 2004, a rotational light-curve for this asteroid was obtained from photometric observations by American amateur astronomer Walter R. Cooney Jr.. It gave a rotation period of 11.60±0.05 hours with a brightness variation of 0.12 in magnitude (U=2).[8] In October 2006, French astronomer Pierre Antonini obtained another light-curve, which gave a similar period of 11.63±0.03 and an amplitude of 0.14 in magnitude (U=2).[9]

    According to the space-based surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures between 27.8 and 33.8 kilometers in diameter and its surface has an albedo between 0.142 and 0.235.[4][5][6][7] CALL derives an albedo of 0.140 and a diameter of 32.4 kilometers, based on an absolute magnitude of 10.2.[3]

    The minor planet was named in memory of Serbian-Yugoslav scientist Milutin Milanković (1879–1958), best-known for his Milankovitch cycles, a theory of celestial mechanics that describes the collective effects of changes in the Earth's movements upon its climate. He is also honored by the lunar crater Milankovič, and by the Martian crater Milankovič.[2] Naming citation was published on 1 August 1980 (M.P.C. 5449).[12]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1605 Milankovitch (1936 GA)" (2016-06-13 last obs.). Jet Propulsion Laboratory. Retrieved 9 August 2016.
    2. 1 2 3 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1605) Milankovitch. Springer Berlin Heidelberg. p. 127. ISBN 978-3-540-00238-3. Retrieved 9 August 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (1605) Milankovitch". Asteroid Lightcurve Database (LCDB). Retrieved 9 August 2016.
    4. 1 2 3 4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794Freely accessible. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 9 August 2016.
    5. 1 2 3 4 5 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 9 August 2016.
    6. 1 2 3 4 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved 9 August 2016.
    7. 1 2 3 4 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 9 August 2016.
    8. 1 2 Cooney, Walter R., Jr. (March 2005). "Lightcurve results for minor planets 228 Agathe, 297 Caecilia, 744 Aguntina 1062 Ljuba, 1605 Milankovitch, and 3125 Hay". The Minor Planet Bulletin. 32 (1): 15–16. Bibcode:2005MPBu...32...15C. ISSN 1052-8091. Retrieved 9 August 2016.
    9. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1605) Milankovitch". Geneva Observatory. Retrieved 9 August 2016.
    10. 1 2 3 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 9 August 2016.
    11. 1 2 "1605 Milankovitch (1936 GA)". Minor Planet Center. Retrieved 9 August 2016.
    12. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 9 August 2016.

    External links

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