$ telnet horizons.jpl.nasa.gov 6775

[mino2357]

https://ssd.jpl.nasa.gov/horizons/app.html#/　の利用

例：

Horizons> 399
Observe, Elements, Vectors  [o,e,v,?] : v
 Coordinate center [ <id>,coord,geo  ] : 010
 Confirm selected station    [ y/n ] --> y
 Reference plane [eclip, frame, body ] : eclip
 Starting TDB [>= 9999BC-Mar-21 00:01] : 1991-12-31
 Ending   TDB [<=   9999-Dec-30 12:00] : 2000-01-01
 Output interval [ex: 10m, 1h, 1d, ? ] : 1d
 Accept default output [ cr=(y), n, ?] : n
 Output reference frame [ ICRF, B1950] : ICRF
 Corrections [ 1=NONE, 2=LT, 3=LT+S ]  : 1
 Output units [1=KM-S, 2=AU-D, 3=KM-D] : 2
 Spreadsheet CSV format    [ YES, NO ] : NO
 Output delta-T (TDB-UT)   [ YES, NO ] : YES
 Select output table type  [ 1-6, ?  ] : 3
 Label cartesian output    [ YES, NO ] : YES