476 Hedwig

476 Hedwig
Discovery
Discovered byLuigi Carnera
Discovery siteHeidelberg
Discovery date17 August 1901
Designations
Pronunciation/ˈhɛdwɪɡ/
German: [ˈheːtvɪç]
1901 GQ
Main belt
Orbital characteristics
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc114.66 yr (41880 d)
Aphelion2.843586228752500 AU (425.39444497321 Gm)
Perihelion2.458818277348141 AU (367.83397872952 Gm)
2.651202253050 AU (396.6142118513 Gm)
Eccentricity0.07256480545036940
4.32 yr (1576.7 d)
277.3588495717540°
0° 13m 41.944s / day
Inclination10.92403953516030°
286.3817373411550°
0.2030128925787450°
Physical characteristics
Dimensions138 km
Mass(1.27±0.19)×1018 kg
Mean density
0.92 g/cm3
27.33 h (1.139 d)
0.0493±0.002
P (Tholen), X (SMASSII)
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.

See also

Notes

  1. ↑ Calculated from its standard gravitational parameter GM = 0.085±0.013 km3/s2.

References

  1. ↑ (German Names)
  2. ↑ "476 Hedwig (1901 GQ)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 9 May 2016.
  3. 1 2 Fuentes-Muñoz, Oscar; Farnocchia, Davide; Giorgini, Jon D.; Park, Ryan S. (1 December 2025). "Asteroid Mass Estimation by Mutual Perturbations During Close Encounters After Gaia Focused Product Release". The Astronomical Journal. 170 (6): 353. Bibcode:2025AJ....170..353F. doi:10.3847/1538-3881/ae0cc9. ISSN 0004-6256. S2CID 283347135.
  4. ↑ Schmadel, Lutz D. (9 March 2013). Dictionary of Minor Planet Names. Springer Science & Business Media. ISBN 978-3-662-02804-9.