1068A I/68A Positions and Proper Motions in alpha Per cluster A Fresneau Bull. Inform. CDS 18 81 1980 1980BICDS..18...81F Positional data Proper motions Regional catalog A list of positions and proper motions is given for 2027 stars of magnitude 7.5 to 12.5 within a radius of 3.5 deg. of alpha Persei. The values are poor for stars fainter than 11. The present list supersedes the microfiche edition (catalogue I/68/) which was described in the Bull. Inform. CDS 18, 81 (1980).

Mel20 Heckmann's number number as published in Astron. Nachr. 283, 109 (Mitt. Hamburger Sternw. 1956MiHam..10...37H) if the star belongs to Heckmann's list --- BD BD (cat. <I/122>) or CSI (Catalogue of Stellar Identifications) this identification is not in BD when a dash (-) follows the degree zone number. --- SpType Spectral type (from Heckmann) --- Pmag Photographic Magnitude, in 0.1 magnitude 0.1mag Epoch Epoch of equatorial coordinates yr RAh RA 1950 at Epoch (hours, always 3) h RAm RA 1950 at Epoch (minutes) min RAs RA 1950 at Epoch (seconds) s e_RAs Mean error on RA (seconds) a zero mean error means that only one observation is available, and hence the mean error is undefined. s pmRA Proper motion mu_alpha in time seconds/century s/ha e_pmRA Mean error on pmRA s/ha DE- Declination 1950 at Epoch (sign) --- DEd Declination 1950 at Epoch (Degrees) deg DEm Declination 1950 at Epoch (Arc minutes) arcmin DEs Declination 1950 at Epoch (Arc seconds) arcsec e_DEs Mean error on Dec (arc seconds) arcsec pmDE Proper motion mu_delta in arcsec/century arcsec/ha e_pmDE Mean error on pmDE arcsec/ha Alain Fresneau, Francois Ochsenbein Strasbg Obs. 1993Mar26 I_68A.xml