astro.wikisort.org - Asteroid
Vala (minor planet designation: 131 Vala) is an inner main-belt asteroid. It was discovered by C. H. F. Peters on 24 May 1873, and named after Völva, a prophetess in Norse mythology.[4] One observation of an occultation of a star by Vala is from Italy (26 May 2002). 10-μm radiometric data collected from Kitt Peak in 1975 gave a diameter estimate of 34 km.[5]
| Discovery[1] | |
|---|---|
| Discovered by | Christian Heinrich Friedrich Peters |
| Discovery date | 24 May 1873 |
| Designations | |
MPC designation | (131) Vala |
| Pronunciation | /ˈvɑːlə/[2] |
Alternative designations | A873 KA; 1945 KA; 1952 DS3; 1953 QE |
Minor planet category | Main belt[1] |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 142.88 yr (52187 d) |
| Aphelion | 2.60 AU (388.64 Gm) |
| Perihelion | 2.27 AU (338.99 Gm) |
Semi-major axis | 2.43 AU (363.82 Gm) |
| Eccentricity | 0.068233 |
Orbital period (sidereal) | 3.79 yr (1,385.3 d) |
Average orbital speed | 19.08 km/s |
Mean anomaly | 289.275° |
Mean motion | 0° 15m 35.532s / day |
| Inclination | 4.9602° |
Longitude of ascending node | 65.682° |
Argument of perihelion | 160.641° |
| Earth MOID | 1.26 AU (187.95 Gm) |
| Jupiter MOID | 2.38 AU (355.52 Gm) |
| TJupiter | 3.499 |
| Physical characteristics | |
| Dimensions | 40.44±1.8 km[1] |
| Mass | 6.9×1016 kg |
Equatorial surface gravity | 0.0113 m/s² |
Equatorial escape velocity | 0.0214 km/s |
Synodic rotation period | 5.1812 h (0.21588 d)[1] |
Geometric albedo | 0.1051±0.010 |
| Temperature | ~178 K |
Spectral type | K[3] (Bus) |
Absolute magnitude (H) | 10.03[1] |
In the Tholen classification system, it is categorized as an SU-type asteroid, while the Bus asteroid taxonomy system lists it as a K-type asteroid.[3] Photometric observations of this asteroid during 2007 at the Organ Mesa Observatory in Las Cruces, New Mexico were used to create a "nearly symmetric bimodal" light curve plot. This showed a rotation period of 10.359 ± 0.001 hours and a brightness variation of 0.09 ± 0.02 magnitude during each cycle.[6] The result is double the 5.18-hour period reported in the JPL Small-Body Database.[1]
On 2028-Apr-05, Vala will pass 0.0276 AU (4,130,000 km; 2,570,000 mi) from asteroid 2 Pallas.[7]
References
- "JPL Small-Body Database Browser: 131 Vala" (2011-10-20 last obs (arc=138 years)). Jet Propulsion Laboratory. Retrieved 12 May 2016.
- "Vala". Dictionary.com Unabridged (Online). n.d.
- DeMeo, Francesca E.; et al. (July 2009), "An extension of the Bus asteroid taxonomy into the near-infrared" (PDF), Icarus, vol. 202, no. 1, pp. 160–180, Bibcode:2009Icar..202..160D, doi:10.1016/j.icarus.2009.02.005, archived from the original (PDF) on 17 March 2014, retrieved 8 April 2013. See appendix A.
- Schmadel, Lutz D.; International Astronomical Union (2003). Dictionary of minor planet names. Berlin; New York: Springer-Verlag. p. 27. ISBN 978-3-540-00238-3.
- Morrison, D.; Chapman, C. R. (March 1976), "Radiometric diameters for an additional 22 asteroids", Astrophysical Journal, vol. 204, pp. 934–939, Bibcode:2008mgm..conf.2594S, doi:10.1142/9789812834300_0469.
- Pilcher, Frederick (June 2008), "Period Determination for 84 Klio, 98 Ianthe, 102 Miriam 112 Iphigenia, 131 Vala, and 650 Amalasuntha", The Minor Planet Bulletin, vol. 35, no. 2, pp. 71–72, arXiv:1203.4336, Bibcode:2008MPBu...35...71P, doi:10.1016/j.pss.2012.03.009.
- "JPL Close-Approach Data: 131 Vala" (2011-10-20 last obs (arc=138 years)). Retrieved 7 December 2011.
Further reading
- Franco, Lorenzo; et al. (October 2019), "Spin-Shape Model for 131 Vala", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, 46 (4): 392–394, Bibcode:2019MPBu...46..392F
External links
- 131 Vala at AstDyS-2, Asteroids—Dynamic Site
- 131 Vala at the JPL Small-Body Database
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На других языках
[de] (131) Vala
(131) Vala ist ein Asteroid des Asteroiden-Hauptgürtels, der am 24. Mai 1873 von Christian Heinrich Friedrich Peters entdeckt wurde.- [en] 131 Vala
[es] (131) Vala
(131) Vala es un asteroide que forma parte del cinturón de asteroides y fue descubierto el 24 de mayo de 1873 por Christian Heinrich Friedrich Peters desde el observatorio Litchfield de Clinton, Estados Unidos. Está nombrado por Wala, una profetisa de las mitologías escandinava y germánica.[2][ru] (131) Вала
(131) Вала (др.-сканд. Vala) — астероид из группы главного пояса. Был открыт 24 мая 1873 года германо-американским астрономом К. Г. Ф. Петерсом в Клинтоне, США и назван по имени пророчицы Вельвы в скандинавской мифологии[1].Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
WikiSort.org - проект по пересортировке и дополнению контента Википедии