657 Gunlöd

657 Gunlöd

Discovery
Discovered by	August Kopff
Discovery site	Heidelberg
Discovery date	23 January 1908
Designations
Alternative names	1908 BV; 1927 SC; 1929 AM; 1936 YJ
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	107.90 yr (39412 d)
Aphelion	2.9049 AU (434.57 Gm)
Perihelion	2.3187 AU (346.87 Gm)
Semi-major axis	2.6118 AU (390.72 Gm)
Eccentricity	0.11223
Orbital period	4.22 yr (1541.7 d)
Mean anomaly	207.017°
Mean motion	0° 14^m 0.636^s / day
Inclination	10.229°
Longitude of ascending node	297.595°
Argument of perihelion	245.225°
Earth MOID	1.34359 AU (200.998 Gm)
Jupiter MOID	2.16895 AU (324.470 Gm)
Jupiter Tisserand parameter	3.378
Physical characteristics
Mean radius	21.26±0.7 km
Rotation period	15.6652 h (0.65272 d)
Geometric albedo	0.0415±0.003
Absolute magnitude (H)	10.93

657 Gunlöd is a C-type asteroid orbiting in the Main belt near the Eunomia family. However, it is not a family member but an un-related interloper in the region because its composition is inconsistent with membership. Its diameter is about 43 km, its albedo around 0.042,^[2] and its rotation period is 15.7 hours.^[3]

References

1. "657 Gunlod (1908 BV)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
2. "Supplemental IRAS Minor Planet Survey".
3. "PDS lightcurve data".

External links

• Discovery Circumstances: Numbered Minor Planets
• 657 Gunlöd at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters