737 Arequipa

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737 Arequipa
Discovery
Discovered by Joel Hastings Metcalf
Discovery site Winchester, Massachusetts
Discovery date7 December 1912
Designations
(737) Arequipa
1912 QB
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 100.96 yr (36874 d)
Aphelion 3.2248  AU (482.42  Gm)
Perihelion 1.9562 AU (292.64 Gm)
2.5905 AU (387.53 Gm)
Eccentricity 0.24485
4.17 yr (1,522.9 d)
24.8306°
0° 14m 11.004s / day
Inclination 12.368°
184.672°
134.348°
Physical characteristics
Mean radius
22.035±0.7 km
7.0259  h (0.29275  d)
0.2723±0.018
S
8.81

    737 Arequipa is a minor planet orbiting the Sun. It was discovered by American astronomer Joel Hastings Metcalf on 7 December 1912 from Winchester, Massachusetts. This stony S-type asteroid was named after the Peruvian city of Arequipa, where Harvard's Boyden Observatory was located prior to 1927. It is orbiting at a distance of 2.59  AU from the Sun, with an orbital eccentricity (ovalness) of 0.245 and a period of 4.17 yr. The orbital plane is inclined at an angle of 12.4° to the ecliptic. [1]

    Contents

    The rotation period of this asteroid has proven to be a challenge to determine, most likely because it has a complex shape and a rotation axis with a low inclination. However, during the 2015 apparition, photometric measurements of the asteroid were taken from close to the equatorial perspective. The resulting light curve displayed a rotation period of 7.0259±0.0003 h. [2]

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    References

    1. 1 2 "737 Arequipa (1912 QB)". JPL Small-Body Database . NASA/Jet Propulsion Laboratory . Retrieved 20 May 2023.
    2. Marciniak, Anna; et al. (June 2016). Różańska, Agata; Bejger, M. (eds.). "Difficult cases in photometric studies of asteroids". 37th Meeting of the Polish Astronomical Society, held 7–10 September 2015 at Adam Mickiewicz University in Poznań, Poland. Proceedings of the Polish Astronomical Society. 3: 84–87. Bibcode:2016pas..conf...84M.