945 Barcelona

945 Barcelona

Discovery
Discovered by	J. Comas Solá
Discovery site	Barcelona
Discovery date	3 February 1921
Designations
Alternative names	1921 JB
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	92.54 yr (33802 days)
Aphelion	3.0656 AU (458.61 Gm)
Perihelion	2.2037 AU (329.67 Gm)
Semi-major axis	2.6347 AU (394.15 Gm)
Eccentricity	0.16357
Orbital period	4.28 yr (1562.0 d)
Mean anomaly	115.327°
Mean motion	0° 13^m 49.692^s / day
Inclination	32.896°
Longitude of ascending node	318.298°
Argument of perihelion	162.067°
Earth MOID	1.22643 AU (183.471 Gm)
Jupiter MOID	2.02013 AU (302.207 Gm)
Jupiter Tisserand parameter	3.154
Physical characteristics
Mean radius	12.735±0.6 km
Rotation period	7.36 h (0.307 d)
Geometric albedo	0.2416±0.024
Absolute magnitude (H)	10.13

945 Barcelona is a minor planet orbiting the Sun in the Asteroid belt. It was discovered 3 February 1921 from Barcelona by the Catalan astronomer Josep Comas Solá (1868–1937) and named for the city of Barcelona (Catalonia), the birthplace of the discoverer. It has an estimated diameter of 25.5 km.

This object is the namesake of a family of 91–600 asteroids that share similar spectral properties and orbital elements; hence they may have arisen from the same collisional event. All members have a relatively high orbital inclination.^[2]

References

1. Yeomans, Donald K., "945 Barcelona", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2 May 2016.
2. Novaković, Bojan; et al. (November 2011), "Families among high-inclination asteroids", Icarus 216 (1), pp. 69–81, arXiv:1108.3740, Bibcode:2011Icar..216...69N, doi:10.1016/j.icarus.2011.08.016.

External links

• Discovery Circumstances: Numbered Minor Planets
• 945 Barcelona at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters