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NGC 3545B

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Galaxy coordinates. II. Accurate equatorial coordinates for 17298 galaxies Using images of the Digitized Sky Survey we measured coodinates for17298 galaxies having poorly defined coordinates. As a control, wemeasured with the same method 1522 galaxies having accurate coordinates.The comparison with our own measurements shows that the accuracy of themethod is about 6 arcsec on each axis (RA and DEC).
Velocity measurements in the Coma filament of galaxies 58 new velocity measurements of galaxies located in the Coma filamentcarried out with the 2.5-m Issac Newton telescope at La Palma arepresented. These optical observations complete a sample of 21-cm lineobservations in the same region up to the 15.0th magnitude.
Photoelectric Observations of Interacting and Compact Galaxies Not Available
Radial velocities of double galaxies Spectral observations of 92 galaxies in isolated pairs have been carriedout. In 52 cases radial velocities were measured. The mean value of theorbital mass-to-luminosity ratio for 18 pairs is (16.2 plus or minus10.0) times the solar value.

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Osservazione e dati astrometrici

Costellazione:	Orsa Maggiore
Ascensione retta:	11^h10^m13.20^s
Declinazione:	+36Â°57'59.0"
Dimensioni apparenti:	0.447′ × 0.447′

Cataloghi e designazioni:

Nomi esatti	(Edit)
NGC 2000.0	NGC 3545B
HYPERLEDA-I	PGC 33893

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