4831 Baldwin

Baldwin

Discovery
Discovered by	S. J. Bus
Discovery site	Cerro Tololo
Discovery date	14 September 1988
Designations
MPC designation	4831
Alternative names	1988 RX11
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc	23378 days (64.01 yr)
Aphelion	3.4466740 AU (515.61509 Gm)
Perihelion	2.7377079 AU (409.55527 Gm)
Semi-major axis	3.092191 AU (462.5852 Gm)
Eccentricity	0.1146382
Orbital period	5.44 yr (1986.1 d)
Mean anomaly	132.27346°
Mean motion	0° 10^m 52.54^s / day
Inclination	0.2645267°
Longitude of ascending node	65.83166°
Argument of perihelion	145.85143°
Earth MOID	1.73144 AU (259.020 Gm)
Jupiter MOID	1.51801 AU (227.091 Gm)
Jupiter Tisserand parameter	3.214
Physical characteristics
Dimensions	35 km[1]
Mean radius	17.59 ± 1.6 km
Geometric albedo	0.0157 ± 0.003[1]
Absolute magnitude (H)	12.5[1]

4831 Baldwin (1988 RX11) is a main-belt asteroid discovered on September 14, 1988 by S. J. Bus at Cerro Tololo. With an albedo of 0.01, it is one of the darkest asteroids known.^[1]

References

1. "JPL Small-Body Database Browser: 4831 Baldwin (1988 RX11)". Jet Propulsion Laboratory. Retrieved 13 April 2016.

External links

• 4831 Baldwin at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters