Hedwig (minor planet designation: 476 Hedwig) (1901 GQ) is a main-belt asteroid discovered on August 17, 1901, by Luigi Carnera at Heidelberg. Named in honour of the wife of Swedish-Danish astronomer Elis Strömgren.[3]
| 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° 13m 41.944s / 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 |
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