Photographic observations of Pluto 1991-1994 with the Baldone Schmidt telescope.

Details Photographic observations of Pluto 1991-1994 with the Baldone Schmidt telescope. Photographic observations of Pluto 1991-1994 with the Baldone Schmidt telescope.

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26as..118..105r&link_type=abstract

Astronomy and Astrophysics Supplement, v.118, p.105-110

Astronomy and Astrophysics

Astrophysics

2

Astrometry, Planets And Satellites: Individual: Pluto

Scientific paper

55 photographic positions of the Pluto for 1991-1994 are presented. The observations were carried out by Latvian astronomers using the 80/120/240 cm Schmidt telescope at Baldone near Riga. 34 plates were reduced by using the 12-21 reference stars from catalogue of southern stars FOCAT-S, created at Pulkovo. The mean reduction errors vary from 0.23" to 0.34" for both coordinates. The obtained Pluto positions were compared with the ephemeris JPL DE200. The increase of the mean (O-C) residuals in RA, already noticed in previous works by the Pulkovo authors, is confirmed. In 1994 the (O-C) residuals with respect DE200 have reached 2.32"+/-0.07" in RA and -0.74"+/- 0.07" in Dec.

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