SC_NEAREST

Name

sc_nearest

Purpose

Find the nearest N stars from a point in a star catalog.

Description

Calling Sequence

sc_nearest, db, ra, dec, radius, id, ra, dec, dra, ddec, mag

Inputs

db - handle to an open mysql ddatabase
ra - ra of serach location (radians)
dec - dec of serach location (radians)
radius - maximum disance from ra/dec to look (radians)

Optional Input Parameters

Keyword Input Parameters

MAG_MIN - lower bound of star magnatude to return (eg. 7.5)
MAG_MAX - upper bound of star magnatude to return (eg. 8.0)
SCLASS - Spectral classification, as a regexp
example: {AB}0 for B0 and B0 class
{GK}.* for any G or K class star
MAX_COUNT - Maximum number of stars to return, defaults to 10
TBLNAME - Name of table to query in the DB
OUTPUTS: Returns a series of arrays with up to n stars
id - name of star
ra - ra
dec - dec
dra - delta ra
ddec - delta dec
mag - magnatude of stars
sc - Spectral type of star

Keyword Output Parameters

Common Blocks

Side Effects

Restrictions

Procedure

Modification History

02/02/19, Writen by David Tucker
2004/03/30, Marc W. Buie, Lowell Observatory, added spectral class return