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798 Ruth

Summary

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]

798 Ruth
Discovery
Discovered byMax Wolf
Discovery siteHeidelberg Observatory
Discovery date21 November 1914
Designations
(798) Ruth
Pronunciation/ˈruːθ/[1]
1914 VT
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc135.93 yr (49647 d)
Aphelion3.1230 AU (467.19 Gm)
Perihelion2.9062 AU (434.76 Gm)
3.0146 AU (450.98 Gm)
Eccentricity0.035951
5.23 yr (1,911.7 d)
327.100°
0° 11m 17.88s / day
Inclination9.2386°
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 edit

  1. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ a b c 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.
  3. ^ a b 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.
  4. ^ Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names, Springer Berlin Heidelberg, p. 73, ISBN 9783642297182.
  5. ^ 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.

External links edit

  • 798 Ruth at AstDyS-2, Asteroids—Dynamic Site
    • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
  • 798 Ruth at the JPL Small-Body Database  
    • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters