818 Kapteynia

818 Kapteynia
Discovery
Discovered by	Max Wolf
Discovery site	Heidelberg
Discovery date	21 February 1916
Designations
Alternative names	1916 YZ
Orbital characteristics^[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	99.92 yr (36496 d)
Aphelion	3.4695 AU (519.03 Gm)
Perihelion	2.8693 AU (429.24 Gm)
Semi-major axis	3.1694 AU (474.14 Gm)
Eccentricity	0.094677
Orbital period	5.64 yr (2060.9 d)
Mean anomaly	38.374°
Mean motion	0° 10^m 28.848^s / day
Inclination	15.664°
Longitude of ascending node	70.816°
Argument of perihelion	293.096°
Earth MOID	1.91242 AU (286.094 Gm)
Jupiter MOID	2.0269 AU (303.22 Gm)
Jupiter Tisserand parameter	3.138
Physical characteristics
Mean radius	7001247250000000000♠24.725±1.95 km
Rotation period	16.35 h (0.681 d)
Geometric albedo	6999165500000000000♠0.1655±0.029
Absolute magnitude (H)	9.3

818 Kapteynia is a minor planet orbiting the Sun. This asteroid is named for the Dutch astronomer Jacobus Kapteyn.

References

Minor planets navigator

817 Annika 818 Kapteynia 819 Barnardiana

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Asteroids	Aten asteroid Asteroid belt Families Jupiter Trojans Near-Earth Spectral types

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