997 Priska

997 Priska
Discovery
Discovered by	K. Reinmuth
Discovery site	Heidelberg
Discovery date	12 July 1923
Designations
Alternative names	1923 NR
Orbital characteristics^[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	92.58 yr (33815 days)
Aphelion	3.1569 AU (472.27 Gm)
Perihelion	2.1796 AU (326.06 Gm)
Semi-major axis	2.6683 AU (399.17 Gm)
Eccentricity	0.18315
Orbital period	4.36 yr (1592.0 d)
Mean anomaly	116.364°
Mean motion	0° 13^m 34.068^s / day
Inclination	10.507°
Longitude of ascending node	247.105°
Argument of perihelion	51.558°
Earth MOID	1.18103 AU (176.680 Gm)
Jupiter MOID	2.07168 AU (309.919 Gm)
Jupiter Tisserand parameter	3.334
Physical characteristics
Mean radius	7000935000000000000♠9.35±0.8 km
Rotation period	16.22 h (0.676 d)
Geometric albedo	6998801000000000000♠0.0801±0.016
Absolute magnitude (H)	12.4

997 Priska is a main-belt asteroid.

References

Minor planets navigator

996 Hilaritas 997 Priska 998 Bodea

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