476 Hedwig

476 Hedwig

Discovery
Discovered by	Luigi Carnera
Discovery site	Heidelberg
Discovery date	17 August 1901
Designations
MPC designation	(476) Hedwig
Pronunciation	/ˈhɛdwɪɡ/ German: [ˈheːtvɪç][1]
Alternative designations	1901 GQ
Minor planet category	Main belt
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	114.66 yr (41880 d)
Aphelion	2.843586228752500 AU (425.39444497321 Gm)
Perihelion	2.458818277348141 AU (367.83397872952 Gm)
Semi-major axis	2.651202253050 AU (396.6142118513 Gm)
Eccentricity	0.07256480545036940
Orbital period (sidereal)	4.32 yr (1576.7 d)
Mean anomaly	277.3588495717540°
Mean motion	0° 13^m 41.944^s / day
Inclination	10.92403953516030°
Longitude of ascending node	286.3817373411550°
Argument of perihelion	0.2030128925787450°
Physical characteristics
Dimensions	116.76±2.6 km
Synodic rotation period	27.33 h (1.139 d)
Geometric albedo	0.0493±0.002
Spectral type	P (Tholen), X (SMASSII)
Absolute magnitude (H)	8.55

476 Hedwig (1901 GQ) is a main-belt asteroid discovered on 17 August 1901 by Luigi Carnera at Heidelberg. Named in honour of the wife of Swedish-Danish astronomer Elis Strömgren.[3]

See also

• List of Solar System objects by size

References

1. (German Names)
2. "476 Hedwig (1901 GQ)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 9 May 2016.
3. Schmadel, Lutz D. (9 March 2013). Dictionary of Minor Planet Names. Springer Science & Business Media. ISBN 978-3-662-02804-9.

External links

• 476 Hedwig at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 476 Hedwig at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters