1257 Móra

1257 Móra
Discovery [1]
Discovered by K. Reinmuth
Discovery site Heidelberg Obs.
Discovery date 8 August 1932
Designations
MPC designation 1257 Mora
Named after
 Kráoly Móra
(astronomer)[2]
1932 PE · 1928 QA
1935 KL · 1964 VO
1964 WA
main-belt · (inner) [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 87.58 yr (31987 days)
Aphelion 2.6945 AU (403.09 Gm)
Perihelion 2.2807 AU (341.19 Gm)
2.4876 AU (372.14 Gm)
Eccentricity 0.083177
3.92 yr (1433.1 d)
234.21°
0° 15m 4.32s / day
Inclination 3.9223°
213.95°
19.344°
Earth MOID 1.26992 AU (189.977 Gm)
Jupiter MOID 2.28917 AU (342.455 Gm)
Jupiter Tisserand parameter 3.467
Physical characteristics
Dimensions 21.47±0.64 km[4]
21.392±1.126 km[5]
10.79 km (derived)[3]
5.2948 h (0.22062 d)[1][6]
5.28 h[7]
5.3±0.1 h[6]
0.096±0.007[4]
0.0508±0.0065[5]
0.20 (assumed)[3]
B–V = 0.630
U–B = 0.320
S [3]
12.1

    1257 Móra, provisional designation 1932 PE, is an assumed stony asteroid from the inner regions of the asteroid belt, about 21 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 8 August 1932.[8]

    The asteroid orbits the Sun at a distance of 2.3–2.7 AU once every 3 years and 11 months (1,434 days). Its orbit shows an eccentricity of 0.08 and is tilted by 4 degrees to the plane of the ecliptic. It has a rotation period of 5.3 hours[6] and an albedo of 0.10 and 0.05, as observed by the space-based Japanese Akari and the Wide-field Infrared Survey Explorer satellites, respectively.[4][5] However, the Collaborative Asteroid Lightcurve Link (CALL) assumes the body to be a stony S-type asteroid with a higher albedo of 0.20 and to have a diameter, that measures only about 11 kilometers.[3]

    The minor planet was named in honour of Hungarian astronomer Kráoly Móra. The minor planet 2517 Orma – where "omra" stands for the Italian "to track/to trace" – was later named by Paul Wild in 1968 based on an alphanumerical variation (or simply an inversion of letters and numbers) of the asteroid "1257 Mora".[2] The Minor Planet Center's naming citations and D. Schmadel's Dictionary of Minor Planets do not provide any further information on specific details about this curiosity.

    References

    1. 1 2 3 "JPL Small-Body Database Browser: 1257 Mora (1932 PE)" (2015-10-24 last obs.). Jet Propulsion Laboratory. Retrieved 28 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1257) Móra. Springer Berlin Heidelberg. p. 104. ISBN 978-3-540-29925-7. Retrieved 22 November 2015.
    3. 1 2 3 4 5 "LCDB Data for (1257) Mora". Asteroid Lightcurve Database (LCDB). Retrieved 22 November 2015.
    4. 1 2 3 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 22 November 2015.
    5. 1 2 3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 22 November 2015.
    6. 1 2 3 Behrend, Raoul. "Asteroids and comets rotation curves – (1257) Mora". Geneva Observatory. Retrieved 22 November 2015.
    7. ↑ Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus: 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN 0019-1035. Retrieved 22 November 2015.
    8. ↑ "1257 Mora (1932 PE)". Minor Planet Center. Retrieved 22 November 2015.

    External links


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