ADC Dataset: I/146 -- Catalogue of Positions and Proper Motions (1988)

Keywords: Positional data ; Proper motions

· Source Reference(s):

Astron. Astrophys. Suppl. Ser. , Vol. 74, p.449, 1988 (ADS: 1988A&AS...74..449R)

· Brief Description of Dataset (Click here to see more details.):

PPM North gives J2000 positions and proper motions of 181731 stars north of -2.5 degrees declination. Its main purpose is to provide a convenient, dense, and accurate net of astrometric reference stars that represents the new IAU (1976) coordinate system on the sky. The mean epoch is near 1931. The average mean errors of the positions and proper motions are 0.27" and 0.43"/cen. On the average six measured positions are available per star; 1064 stars do not have sufficient redundancies to resolve discrepancies. In addition to the positions and proper motions, the PPM (North) contains the BD number, the magnitude, the spectral type, the number of positions included, the mean error of each component of the position and proper motion, the weighted mean epoch in each coordinate, the numbers in the SAO, HD, and AGK3 catalogs, and various standard notes. In addition a number of individual notes are given in the introduction.

(Description continues... click here to see entire text)

· Quick Access to This Dataset:

FTP ADC Viewer

· See Also:

Dataset: I/149A: Fifth Fundamental Catalogue (FK5)
Dataset: I/193: PPM-South Catalogue
Dataset: I/206: Bright Star Supplement to PPM
Dataset: I/208: The 90000 stars Supplement to PPM

· Data Set Contents:

This data set includes 2 table, 0 image/graphic, and 1 text files.

Click on File Name to review table fields and notes.

File Name	File Type	Description	Access Methods
1146_ppmnorth.dat	table	Catalogue PPM-North	*FTP*	*ADC Viewer*
1146_ppmnofmt.dat	table	Catalogue in format of old PPM North	*FTP*	*ADC Viewer*
1146_descrip.doc	text	Authors' description	*FTP*