(8975) Atthis

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( 8975 ) atthis is an asteroid of the inner main belt, which was discovered on 29 September 1973 by the Dutch astronomer Cornelis Johannes van Houten couple and Ingrid van Houten - Groeneveld. The discovery happened during the 2nd Trojan survey, in which the 120 - cm Oschin Schmidt telescope at Palomar Observatory recorded by Tom Gehrels field plates at Leiden University were screened, 13 years after the beginning of the Palomar - Leiden Surveys.

The asteroid belongs to the Polana family ( named after (142 ) Polana ), a subgroup of the Nysa - group (named after (44 ) Nysa ). The Nysa - Hertha family group is also called (after (135 ) Hertha). Common to all members of those families and groups that orbits around the Sun in 2:1 resonance are with that of the planet Mars, so are stable over a longer period. The timeless ( nichtoskulierenden ) orbital elements of ( 8975 ) atthis are almost identical with those of eight smaller when one of the absolute brightness of 16.2, 16.4, 16.4, 16.6, 16.9, 17.0, 17.9 and 17.4 compared to 14.7 emanates, asteroids: ( 103809 ) 2000 DB19, ( 127835 ) 2003 FX104, ( 165374 ) 2000 WB114, ( 194544 ) 2001 XO65, ( 200 992 ) in 2002 CU144, ( 231224 ) 2005 WW159, ( 316956 ) 2001 DK90 and ( 342 057 ) in 2008 SE2.

( 8975 ) atthis is named after the kingfisher, whose scientific name is Alcedo atthis. At the time of designation of the asteroid on February 2, 1999, the Kingfisher was on the Dutch Red List of Threatened Birds.