Discovered by A. Schwassmann Alternative names 1922 MW Aphelion 3.3259 AU (497.55 Gm) Discovered 18 November 1922 Orbits Sun Asteroid group Asteroid belt | Discovery date 18 November 1922 Observation arc 93.39 yr (34111 days) Perihelion 1.9914 AU (297.91 Gm) Absolute magnitude 11.9 Discovery site Hamburg Observatory | |
Discoverer Friedrich Karl Arnold Schwassmann Similar 528 Rezia, 540 Rosamunde, 509 Iolanda, 625 Xenia, 679 Pax | ||
989 Schwassmannia is a minor planet orbiting the Sun.
References
989 Schwassmannia Wikipedia(Text) CC BY-SA