406 Erna

406 Erna
Discovery
A three-dimensional model of 406 Erna based on its light curve.
Discovered by	Auguste Charlois
Discovery date	22 August 1895
Designations
Alternative names	1895 CB
Minor planet category	Main belt
Orbital characteristics^[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	113.12 yr (41316 d)
Aphelion	3.44422 AU (515.248 Gm)
Perihelion	2.38409 AU (356.655 Gm)
Semi-major axis	2.91416 AU (435.952 Gm)
Eccentricity	0.18189
Orbital period	4.97 yr (1817.1 d)
Average orbital speed	17.45 km/s
Mean anomaly	89.6619°
Mean motion	0° 11^m 53.243^s / day
Inclination	4.19349°
Longitude of ascending node	315.767°
Argument of perihelion	37.2158°
Earth MOID	1.37934 AU (206.346 Gm)
Jupiter MOID	1.99318 AU (298.175 Gm)
Jupiter Tisserand parameter	3.253
Physical characteristics
Dimensions	7004491900000000000♠49.19±1.7 km
Mass	unknown
Mean density	unknown
Equatorial surface gravity	unknown
Equatorial escape velocity	unknown
Rotation period	8.789 h (0.3662 d)
Geometric albedo	6998524000000000000♠0.0524±0.004
Temperature	unknown
Spectral type	P
Absolute magnitude (H)	10.36

406 Erna is a typical Main belt asteroid. It is classified as a P-type asteroid and is probably composed of primitive carbonaceous chondritic materials.

It was discovered by Auguste Charlois on August 22, 1895 in Nice.

References

Minor planets navigator

405 Thia 406 Erna 407 Arachne

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