1520 Imatra

1520 Imatra
Discovery [1]
Discovered by Y. Väisälä
Discovery site Turku Observatory
Discovery date 22 October 1938
Designations
MPC designation 1520 Imatra
Named after
 Imatra (Finnish town)[2]
1938 UY · 1938 YH
main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc 77.03 yr (28,135 days)
Aphelion 3.4135 AU
Perihelion 2.8037 AU
3.1086 AU
Eccentricity 0.0980
5.48 yr (2,002 days)
36.263°
Inclination 15.240°
253.47°
116.37°
Physical characteristics
Dimensions 53.61 km[4]
55.55±0.60 km[5]
56.094±1.824 km[6]
58.63±0.70 km[7]
53.45 km (derived)[3]
18.635 h[8]
5.23 h[9]
18.609±0.004 h[10]
0.0615[4]
0.058±0.002[5]
0.0561±0.0109[6]
0.039±0.009[7]
0.0469 (derived)[3]
SMASS = C
C [3]
10.4

    1520 Imatra, provisional designation 1938 UY, is a large carbonaceous asteroid from the outer region of the asteroid belt, about 54 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland on 22 October 1938.[11]

    The dark C-type asteroid orbits the Sun at a distance of 2.8–3.4 AU once every 5 years and 6 months (2,002 days). Its orbit is tilted by 15 degrees to the plane of the ecliptic and shows an eccentricity of 0.10. It takes about 18.635 hours to rotate once around its axis.[8][9][10] According to the space-based surveys carried out by IRAS, Akari, WISE/NEOWISE, the body's low albedo is between 0.04 and 0.06.[4][5][6][7]

    The minor planet is named for the south-eastern Finnish town Imatra, located in South Karelia near the Russian border, about half way in between St Petersburg and Finland's capital Helsinki.[2]

    References

    1. 1 2 "JPL Small-Body Database Browser: 1520 Imatra (1938 UY)" (2015-11-02 last obs.). Jet Propulsion Laboratory. Retrieved December 2015.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1520) Imatra. Springer Berlin Heidelberg. p. 121. ISBN 978-3-540-29925-7. Retrieved December 2015.
    3. 1 2 3 4 "LCDB Data for (1520) Imatra". Asteroid Lightcurve Database (LCDB). Retrieved December 2015.
    4. 1 2 3 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 December 2015.
    5. 1 2 3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; Ishihara, Daisuke; 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 December 2015.
    6. 1 2 3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; McMillan, R. S.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved December 2015.
    7. 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:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved December 2015.
    8. 1 2 Warner, Brian D. (January 2009). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2008 May - September". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 36 (1): 7–13. Bibcode:2009MPBu...36....7W. ISSN 1052-8091. Retrieved December 2015.
    9. 1 2 de Sanctis, M. C.; Barucci, M. A.; Angeli, C. A.; Fulchignoni, M.; Burchi, R.; Angelini, P. (October 1994). "Photoelectric and CCD observations of 10 asteroids". Planetary and Space Science: 859–864. Bibcode:1994P&SS...42..859D. doi:10.1016/0032-0633(94)90066-3. ISSN 0032-0633. Retrieved December 2015.
    10. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1520) Imatra". Geneva Observatory. Retrieved December 2015.
    11. ↑ "1520 Imatra (1938 UY)". Minor Planet Center. Retrieved December 2015.

    External links


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