657 Gunlöd is a dark background asteroid orbiting in the intermediate asteroid belt, approximately 43 kilometres (27 mi) in diameter. It was discovered on 23 January 1908, by astronomer August Kopff at the Heidelberg Observatory in southwest Germany. It has an albedo of around 0.042 and a rotation period of 15.7 hours.[2][3]

657 Gunlöd
Discovery
Discovered byA. Kopff
Discovery siteHeidelberg Obs.
Discovery date23 January 1908
Designations
(657) Gunlöd
1908 BV; 1927 SC;
1929 AM; 1936 YJ
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc107.90 yr (39412 d)
Aphelion2.9049 AU (434.57 Gm)
Perihelion2.3187 AU (346.87 Gm)
2.6118 AU (390.72 Gm)
Eccentricity0.11223
4.22 yr (1541.7 d)
207.017°
0° 14m 0.636s / day
Inclination10.228°
297.595°
245.225°
Physical characteristics
21.26±0.7 km
15.6652 h (0.65272 d)
0.0415±0.003
10.93

References

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  1. ^ "657 Gunlod (1908 BV)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
  2. ^ "Supplemental IRAS Minor Planet Survey". Archived from the original on 23 June 2006.
  3. ^ "PDS lightcurve data". Archived from the original on 14 June 2006.
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