2151 Hadwiger

2151 Hadwiger, provisional designation 1977 VX, is a Marian asteroid from the central region of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 3 November 1977, by Swiss astronomer Paul Wild at Zimmerwald Observatory near Bern, Switzerland.^[7]

2151 Hadwiger

Discovery[1]
Discovered by	P. Wild
Discovery site	Zimmerwald Obs.
Discovery date	3 November 1977
Designations
MPC designation	(2151) Hadwiger
Named after	Hugo Hadwiger[2]
Alternative designations	1977 VX · 1932 UC 1940 SB · 1963 FF 1969 UU2 · 1973 SQ6 1975 EA
Minor planet category	main-belt · Maria
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	83.16 yr (30,374 days)
Aphelion	2.7071 AU
Perihelion	2.4145 AU
Semi-major axis	2.5608 AU
Eccentricity	0.0571
Orbital period (sidereal)	4.10 yr (1,497 days)
Mean anomaly	177.54°
Mean motion	0° 14m 25.8s / day
Inclination	15.487°
Longitude of ascending node	27.926°
Argument of perihelion	86.794°
Physical characteristics
Dimensions	13.767±0.540[3]
Synodic rotation period	5.872±0.002[4] 2.29±0.01 h[5]
Geometric albedo	0.446±0.058[3]
Spectral type	Tholen = CSU[1] C[6]
Absolute magnitude (H)	11.0[1]

Orbit and characterization

Hadwiger orbits the Sun at a distance of 2.4–2.7 AU once every 4 years and 1 month (1,497 days). Its orbit has an eccentricity of 0.06 and an inclination of 15° with respect to the ecliptic.^[1] It is a member of the Maria family of asteroids.^[5]

In the Tholen classification, Hadwiger is a carbonaceous CSU-type.^[1] It has a rotation period of hours with a brightness variation of in magnitude.^[4]

Naming

This minor planet was named in memory of Swiss mathematician Hugo Hadwiger (1908–1981), professor at the University of Berne for more than 40 years and very popular for his refined art of presentation.^[2] The approved naming citation was published by the Minor Planet Center on 22 September 1983 (M.P.C. 8151).^[8]