2590 Mourão

2590 Mourão
Discovery [1]
Discovered by H. Debehogne
Discovery site ESO–La Silla Obs.
Discovery date 22 May 1980
Designations
MPC designation 2590 Mourao
Named after
 Ronaldo Mourão
(astronomer)[2]
1980 KJ · 1949 WP
1963 SM · 1974 UN
1974 VG2 · 1974 XK
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 66.33 yr (24227 days)
Aphelion 2.6193 AU (391.84 Gm)
Perihelion 2.0650 AU (308.92 Gm)
2.3422 AU (350.39 Gm)
Eccentricity 0.11834
3.58 yr (1309.3 d)
190.62°
0° 16m 29.856s / day
Inclination 6.1356°
223.69°
165.96°
Earth MOID 1.0695 AU (159.99 Gm)
Jupiter MOID 2.80177 AU (419.139 Gm)
Jupiter Tisserand parameter 3.546
Physical characteristics
Dimensions 7.88±1.06 km[4]
6.96 km (calculated)[3]
15.59 h (0.650 d)[5]
35.52±0.05 h[6]
0.605±0.296[4]
0.4 (assumed)[3]
V [3]
12.4[1]

    2590 Mourão, provisional designation 1980 kJ, is a rocky vestoid asteroid from the inner regions of the asteroid belt, about 7 kilometers in diameter. It was discovered on 22 May 1980, by Belgian astronomer Henri Debehogne at ESO's La Silla Observatory in northern Chile.[7]

    The asteroid orbits the Sun at a distance of 2.1–2.6 AU once every 3 years and 7 months (1,310 days). Its orbit shows an eccentricity of 0.12 and is tilted by 6 degrees to the plane of the ecliptic.[1] Based on its orbital elements, the V-type asteroid is not classified as a Vestian, but as a member of the Flora family, one of the largest groups of asteroids in the main-belt.[3] V-type asteroids are less common than the abundant S-type asteroids but similar in composition, except for their higher concentration of pyroxenes, an aluminium-rich silicate mineral.

    According to the survey carried out by the WISE and subsequent NEOWISE mission, the body's albedo amounts to 0.61,[4] while the Collaborative Asteroid Lightcurve Link assumes a somewhat less extraordinary value of 0.4.[3] Photometric observations of this asteroid reported in 2007 show a rotation period of 15.59±0.01 hours with a brightness variation of 0.49 magnitude.[5] However, a provisional observation in 2013 gave a divergent period of almost 36 hours.[6]

    The minor planet was named in honor of Brazilian astronomer Ronaldo Rogério de Freitas Mourão (1935–2014) at the National Observatory of Brazil, in Rio de Janeiro. His activities included the study of double stars, minor planets and comets. He participated extensively in ESO's discoverer program of observations of minor planets. Mourão also wrote several astronomical books and was the founder of the Brazilian Museum for Astronomy (Portuguese: Museu de Astronomia e Ciências Afins).[2]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 2590 Mourao (1980 KJ)" (2015-06-14 last obs.). Jet Propulsion Laboratory. Retrieved 15 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (2590) Mourão. Springer Berlin Heidelberg. p. 211. ISBN 978-3-540-29925-7. Retrieved 9 December 2015.
    3. 1 2 3 4 5 6 "LCDB Data for (2590) Mourao". Asteroid Lightcurve Database (LCDB). Retrieved 9 December 2015.
    4. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; Cabrera, M. S. (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 December 2015.
    5. 1 2 Galád, Adrián; Pravec, Petr; Gajdos, Stefan; Kornos, Leonard; Világi, Jozef (October 2007). "Seven Asteroids Studied from Modra Observatory in the Course of Binary Asteroid Photometric Campaign". Earth. 101 (1-2): 17–25(EM&PHomepage). Bibcode:2007EM&P..101...17G. doi:10.1007/s11038-007-9146-6. Retrieved 9 December 2015.
    6. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (2590) Mourao". Geneva Observatory. Retrieved 9 December 2015.
    7. ↑ "2590 Mourao (1980 KJ)". Minor Planet Center. Retrieved 9 December 2015.

    External links


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