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HD 20551


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Speckle Interferometry at the US Naval Observatory. VIII.
The results of 2044 speckle interferometric observations of doublestars, made with the 26 inch (66 cm) refractor of the US NavalObservatory, are presented. Each speckle interferometric observation ofa system represents a combination of over a thousand short-exposureimages. These observations are averaged into 1399 mean positions andrange in separation from 0.16" to 14.97", with a mean separation of2.51". This is the eighth in a series of papers presenting measuresobtained with this system and covers the period 2001 March 18 through2001 December 30.

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Observation and Astrometry data

Constellation:エリダヌス座
Right ascension:03h18m00.52s
Declination:-10°34'12.9"
Apparent magnitude:9.013
Distance:146.628 parsecs
Proper motion RA:45.1
Proper motion Dec:14
B-T magnitude:9.544
V-T magnitude:9.057

Catalogs and designations:
Proper Names
HD 1989HD 20551
TYCHO-2 2000TYC 5298-375-1
USNO-A2.0USNO-A2 0750-00732524
HIPHIP 15356

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