798 Ruth
798 Ruth is a minor planet orbiting the Sun that was discovered by the German astronomer Max Wolf on 21 November 1914. It may have been named after the biblical character Ruth.[4] This main belt asteroid has an orbital period of 5.23 years and is orbiting at a distance of 3.0 AU from the Sun with an eccentricity (ovalness) of 0.036. The orbital plane is tilted by 9.2° from the plane of the ecliptic.[2]
| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery site | Heidelberg Observatory |
| Discovery date | 21 November 1914 |
| Designations | |
| (798) Ruth | |
| Pronunciation | /ˈruːθ/[1] |
| 1914 VT | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 135.93 yr (49647 d) |
| Aphelion | 3.1230 AU (467.19 Gm) |
| Perihelion | 2.9062 AU (434.76 Gm) |
| 3.0146 AU (450.98 Gm) | |
| Eccentricity | 0.035951 |
| 5.23 yr (1,911.7 d) | |
| 327.100° | |
| 0° 11m 17.88s / day | |
| Inclination | 9.2386° |
| 214.268° | |
| 41.817° | |
| Physical characteristics | |
Mean radius | 21.595±1.45 km |
| 8.550 h (0.3563 d) | |
| 0.1587±0.024 | |
| M[3] | |
| 9.5 | |
This is a member of the dynamic Eos family of asteroids that most likely formed as the result of a collisional breakup of a parent body.[5] It is an M-type (metallic) asteroid that displays a significant component of the mineral olivine in its spectrum.[3] 798 Ruth spans 43.19±2.9 km and rotates on its axis once every 8.55 h.[2]
References
- Noah Webster (1884) A Practical Dictionary of the English Language
- Yeomans, Donald K., "798 Ruth", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, archived from the original on 15 August 2014, retrieved 4 May 2016.
- Sanchez, Juan A.; et al. (January 2014), "Olivine-dominated asteroids: Mineralogy and origin", Icarus, 228: 288–300, arXiv:1310.1080, Bibcode:2014Icar..228..288S, doi:10.1016/j.icarus.2013.10.006.
- Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names, Springer Berlin Heidelberg, p. 73, ISBN 9783642297182.
- Veeder, G. J.; et al. (March 1995), "Eos, Koronis, and Maria family asteroids: Infrared (JHK) photometry" (PDF), Icarus, 114: 186–196, Bibcode:1995Icar..114..186V, CiteSeerX 10.1.1.31.2739, doi:10.1006/icar.1995.1053.
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