4230 van den Bergh

Van den Bergh

Discovery
Discovered by	Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels
Discovery site	Palomar Observatory
Discovery date	19 September 1973
Designations
MPC designation	4230
Named after	Sidney Van den Bergh
Alternative names	1973 ST1
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc	23476 days (64.27 yr)
Aphelion	4.4824724 AU (670.56833 Gm)
Perihelion	3.4250346 AU (512.37788 Gm)
Semi-major axis	3.953754 AU (591.4732 Gm)
Eccentricity	0.1337258
Orbital period	7.86 yr (2871.5 d)
Mean anomaly	323.53091°
Mean motion	0° 7^m 31.328^s / day
Inclination	3.099514°
Longitude of ascending node	160.53360°
Argument of perihelion	22.90514°
Earth MOID	2.42774 AU (363.185 Gm)
Jupiter MOID	0.477233 AU (71.3930 Gm)
Jupiter Tisserand parameter	3.041
Physical characteristics
Mean radius	18.875 ± 1.45 km
Rotation period	88.0 h (3.67 d)
Geometric albedo	0.0259 ± 0.005
Absolute magnitude (H)	11.8

4230 Van den Bergh (1973 ST1) is an outer main-belt asteroid discovered on September 19, 1973 by Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels at Palomar Observatory. It is named for Sidney Van den Bergh, Dutch Canadian astronomer and former director of the Dominion Astrophysical Observatory.^[2]

References

1. "4230 van den Bergh (1973 ST1)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 14 April 2016.
2. Canadian Asteroids, The Royal Astronomy Society of Canada, July 22, 2008, retrieved 2009-01-19

External links

• JPL Small-Body Database Browser on 4230 Van den Bergh
• 4230 van den Bergh at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters