989 Schwassmannia

989 Schwassmannia
Discovery
Discovered by	A. Schwassmann
Discovery site	Bergedorf
Discovery date	18 November 1922
Designations
Alternative names	1922 MW
Orbital characteristics^[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	93.39 yr (34111 days)
Aphelion	3.3259 AU (497.55 Gm)
Perihelion	1.9914 AU (297.91 Gm)
Semi-major axis	2.6587 AU (397.74 Gm)
Eccentricity	0.25096
Orbital period	4.34 yr (1583.4 d)
Mean anomaly	216.40°
Mean motion	0° 13^m 38.496^s / day
Inclination	14.700°
Longitude of ascending node	243.405°
Argument of perihelion	165.858°
Earth MOID	1.00398 AU (150.193 Gm)
Jupiter MOID	2.06966 AU (309.617 Gm)
Jupiter Tisserand parameter	3.296
Physical characteristics
Mean radius	7000643000000000000♠6.43±0.4 km
Rotation period	107.85 h (4.494 d)
Geometric albedo	6999203500000000000♠0.2035±0.027
Absolute magnitude (H)	11.9

989 Schwassmannia is a minor planet orbiting the Sun.

References

Minor planets navigator

988 Appella 989 Schwassmannia 990 Yerkes

Designation Groups Moons Meanings of names Pronunciation of names

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

Distant minor planets	Centaurs Damocloids Neptune trojans Trans-Neptunian objects Detached Kuiper belt Oort cloud Scattered disc

Lists / categories

This article is issued from Wikipedia - version of the 9/10/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.