| Discovery | |
|---|---|
| Discovered by | Joel Hastings Metcalf |
| Discovery site | Winchester, Massachusetts |
| Discovery date | 7 December 1912 |
| Designations | |
| MPC designation | (737) Arequipa |
| Alternative designations | 1912 QB |
| Orbital characteristics | |
| 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) |
| Semi-major axis | 2.5905 AU (387.53 Gm) |
| Eccentricity | 0.24485 |
| Orbital period (sidereal) | 4.17 yr (1,522.9 d) |
| Mean anomaly | 24.8306° |
| Mean motion | 0° 14 11.004 / day |
| Inclination | 12.368° |
| Longitude of ascending node | 184.672° |
| Argument of perihelion | 134.348° |
| Physical characteristics | |
| Mean radius | 22.035±0.7 km |
| Synodic rotation period | 7.0259 h (0.29275 d) |
| Geometric albedo | 0.2723±0.018 |
| Spectral type | S |
| Absolute magnitude (H) | 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.
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.
See also
References
- ^ "737 Arequipa (1912 QB)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 20 May 2023.
- 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.
External links
- 737 Arequipa at AstDyS-2, Asteroids—Dynamic Site
- 737 Arequipa at the JPL Small-Body Database
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