204 Kallisto

204 Kallisto

Discovery
Discovered by	Johann Palisa
Discovery date	October 8, 1879
Designations
Named after	Callisto
Alternative names	n/a
Minor planet category	Main belt
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion	468.456 Gm (3.131 AU)
Perihelion	331.062 Gm (2.213 AU)
Semi-major axis	399.759 Gm (2.672 AU)
Eccentricity	0.172
Orbital period	1595.51 d (4.37 a)
Average orbital speed	18.22 km/s
Mean anomaly	2.235°
Inclination	8.272°
Longitude of ascending node	205.217°
Argument of perihelion	55.712°
Physical characteristics
Dimensions	50.36 ± 1.69[1] km
Mass	(0.60 ± 1.81) × 10^18 kg[1]
Rotation period	14.10 h
Albedo	0.208
Spectral type	S
Absolute magnitude (H)	8.89

204 Kallisto is a fairly typical, although sizeable Main belt asteroid. It is classified as an S-type asteroid. Like other asteroids of its type, it is light in colour.

It was discovered by Johann Palisa on October 8, 1879 in Pola.

The asteroid was named after the same nymph Callisto in Greek mythology as Jupiter's moon Callisto.

References

1. Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.

External links

• The Asteroid Orbital Elements Database
• Minor Planet Discovery Circumstances
• Asteroid Light-curve Parameters
• Asteroid Albedo Compilation
• 204 Kallisto at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters