2145 Blaauw

Blaauw

Discovery
Discovered by	R. M. West
Discovery site	La Silla
Discovery date	24 October 1976
Designations
MPC designation	2145
Named after	Adriaan Blaauw
Alternative names	1976 UF
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc	39.31 yr (14358 days)
Aphelion	3.5282096 AU (527.81264 Gm)
Perihelion	2.9080216 AU (435.03384 Gm)
Semi-major axis	3.218116 AU (481.4233 Gm)
Eccentricity	0.0963589
Orbital period	5.77 yr (2108.6 d)
Mean anomaly	211.9883°
Mean motion	0° 10^m 14.616^s / day
Inclination	15.00876°
Longitude of ascending node	264.34647°
Argument of perihelion	278.72967°
Earth MOID	1.95748 AU (292.835 Gm)
Jupiter MOID	1.72468 AU (258.008 Gm)
Jupiter Tisserand parameter	3.129
Physical characteristics
Mean radius	17.10 ± 0.95 km
Rotation period	12.141 h (0.5059 d)
Geometric albedo	0.0869 ± 0.010
Absolute magnitude (H)	10.9

2145 Blaauw (1976 UF) is an outer main-belt asteroid discovered on October 24, 1976 by Richard Martin West at La Silla. Photometric measurements made from the Oakley Southern Sky Observatory during 2012 gave a light curve with a period of 12.141 ± 0.003 hours and a variation in brightness of 0.18 ± 0.03 in magnitude.^[2]

References

1. "2145 Blaauw (1976 UF)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 15 April 2016.
2. Moravec, Patricia; Cochren, Joseph; Gerhardt, Michael; et al. (October 2012), "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2012 January-April", The Minor Planet Bulletin 39 (4): 213–216, Bibcode:2012MPBu...39..213M.

External links

• 2145 Blaauw at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters