OBJAPPUL

Name

objappul

Purpose

Generate a list of nightly appulses for a solar system object.

Description

Calling Sequence

objappul,starttime,ndays,objcode,outfile,OBSCODE=obscode

Inputs

starttime - Starting time for object ephemeris. This can be provided as
a julian date (scalar), or a 3,4,5, or 6 element time vector
[y,m,d,h,m,s]. h, m, s, are optional in order of decreasing
significance.
ndays - Number of days to run ephemeris over.
objcode - Object code for solar system object (see EPHEM.PRO)

Optional Input Parameters

outfile - Output file name, default is to the screen
MINSEP - Minimum separation of appulse to flag star (arcsec), default=6.

Keyword Input Parameters

OBSCODE - Standard M.P.C. observatory code, default is geocentric

Outputs

A file is created that is in the format specified.

Keyword Output Parameters

Common Blocks

Side Effects

Restrictions

It is not practical to extract too large of a list. Also, this program
does not have appropriate logic to handle the case where the object's
path crosses 0h RA. There is an arbitrary limit of 2 degrees placed
on the extraction widths to prevent extracting the entire star catalog.

Procedure

Modification History

Written by Marc W. Buie, Lowell Observatory, 2001/05/01
2001/05/31, MWB, added MINSEP keyword
2002/09/09, MWB, added support for string obscode values
2003/10/01, MWB, converted my Delfile call to system file_delete routine