247 Eukrate

247 Eukrate

Discovery
Discovered by	Robert Luther
Discovery date	14 March 1885
Designations
Alternative names	A901 TB, 1947 TA, 1960 TC
Minor planet category	Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	131.09 yr (47880 d)
Aphelion	3.4086 AU (509.92 Gm)
Perihelion	2.0778 AU (310.83 Gm)
Semi-major axis	2.7432 AU (410.38 Gm)
Eccentricity	0.24257
Orbital period	4.54 yr (1659.5 d)
Average orbital speed	18.0 km/s
Mean anomaly	75.9892°
Mean motion	0° 13^m 0.948^s / day
Inclination	24.991°
Longitude of ascending node	0.16410°
Argument of perihelion	54.969°
Earth MOID	1.16148 AU (173.755 Gm)
Jupiter MOID	2.34101 AU (350.210 Gm)
Jupiter Tisserand parameter	3.174
Physical characteristics
Dimensions	134.43±2.5 km
Rotation period	12.093 h (0.5039 d)
Geometric albedo	0.0595±0.002
Spectral type	CP
Absolute magnitude (H)	8.04

247 Eukrate is a rather large main-belt asteroid. It is dark and probably a primitive carbonaceous body. The asteroid was discovered by Robert Luther on March 14, 1885, in Düsseldorf. It was named after Eukrate, a Nereid in Greek mythology.

In 2001, the asteroid was detected by radar from the Arecibo Observatory at a distance of 1.18 AU. The resulting data yielded an effective diameter of 134 ± 15 km.^[2]

References

1. "247 Eukrate". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
2. Magri, Christopher; et al. (January 2007), "A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999 2003" (PDF), Icarus, 186 (1): 126–151, Bibcode:2007Icar..186..126M, doi:10.1016/j.icarus.2006.08.018, retrieved 2015-04-14.

External links

• The Asteroid Orbital Elements Database
• Minor Planet Discovery Circumstances
• Asteroid Lightcurve Data File
• 247 Eukrate at the JPL Small-Body Database
  
  • Discovery · Orbit diagram · Orbital elements · Physical parameters