555 Norma

555 Norma
Discovery
Discovered by	M. F. Wolf
Discovery site	Heidelberg
Discovery date	14 January 1905
Designations
Alternative names	1905 PT
Orbital characteristics^[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	110.96 yr (40528 d)
Aphelion	3.6658 AU (548.40 Gm)
Perihelion	2.7107 AU (405.51 Gm)
Semi-major axis	3.1882 AU (476.95 Gm)
Eccentricity	0.14978
Orbital period	5.69 yr (2079.3 d)
Mean anomaly	274.488°
Mean motion	0° 10^m 23.268^s / day
Inclination	2.6461°
Longitude of ascending node	130.435°
Argument of perihelion	356.413°
Earth MOID	1.72456 AU (257.991 Gm)
Jupiter MOID	1.40251 AU (209.813 Gm)
Jupiter Tisserand parameter	3.178
Physical characteristics
Mean radius	7001200550000000000♠20.055±0.75 km
Rotation period	19.55 h (0.815 d)
Geometric albedo	6998632000000000000♠0.0632±0.005
Absolute magnitude (H)	10.8

555 Norma is a Themistian asteroid.

References

↑ "555 Norma (1905 PT)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.

External links

Discovery · Orbit diagram · Orbital elements · Physical parameters

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