2143 Jimarnold

Jimarnold

Discovery
Discovered by	E. F. Helin
Discovery site	Palomar
Discovery date	26 September 1973
Designations
MPC designation	2143
Named after	Jim Arnold
Alternative names	1973 SA
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc	60.92 yr (22252 days)
Aphelion	2.8145774 AU (421.05479 Gm)
Perihelion	1.7478088 AU (261.46847 Gm)
Semi-major axis	2.281193 AU (341.2616 Gm)
Eccentricity	0.2338181
Orbital period	3.45 yr (1258.5 d)
Mean anomaly	99.66807°
Mean motion	0° 17^m 9.825^s / day
Inclination	8.363834°
Longitude of ascending node	17.42164°
Argument of perihelion	352.05516°
Earth MOID	0.746246 AU (111.6368 Gm)
Jupiter MOID	2.64096 AU (395.082 Gm)
Jupiter Tisserand parameter	3.555
Physical characteristics
Absolute magnitude (H)	13.7

2143 Jimarnold (1973 SA) is a main-belt asteroid discovered on September 26, 1973 by E. F. Helin at Palomar.

This asteroid was named in honor of Dr. James R. Arnold,^[2] then director of California Space Science Institute at the University of California, San Diego. Dr. Arnold's research into the motion of small bodies assisted the discovery of several asteroids, which led to this honor. Its symbol is ‽ (the interrobang).

References

1. "2143 Jimarnold (1973 SA)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 15 April 2016.
2. Schmadel, Lutz D. (2003). Dictionary of minor planet names (5th rev. & enl. ed.). Berlin: Springer. p. 174. ISBN 3-540-00238-3.

External links

• JPL Small-Body Database Browser on 2143 Jimarnold
• 2143 Jimarnold at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters