Discovered by LONEOS Observation arc 13601 days (37.24 yr) Perihelion 1.2264 AU (183.47 Gm) Discovered 3 August 1998 Discovery site Anderson Mesa Station Spectral type Q-type asteroid | Discovery date 3 August 1998 Aphelion 2.8041 AU (419.49 Gm) Semi-major axis 2.0153 AU (301.48 Gm) Absolute magnitude 17.3 Asteroid group Amor asteroid | |
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Discoverer Lowell Observatory Near-Earth-Object Search | ||
(31345) 1998 PG is an Amor near-Earth asteroid discovered by the LONEOS program on August 3, 1998. It is known to have a moon, S/2001 (31345) 1.
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Status as a Near-Earth Object
1998 PG is classified as an Amor asteroid. It has made multiple close approaches to Earth, with the closest being 35,648,680 kilometres (22,151,060 mi) on 15 October 1978.
Moon
1998 PG has a single moon, S/2001 (31345) 1. The moon was discovered at the Table Mountain Observatory by analyzing observations from 29 August to 25 October 1998. S/2001 (31345) 1 has a size of 300 metres (980 ft), one-third the size of the asteroid itself, and orbits every 14 hours with a semi-major axis of 1.5 kilometres (0.93 mi). From the surface of 1998 PG, the moon would have an angular diameter of about 16.3°. For comparison, the Sun appears to be 0.5° from Earth.