- VSOP87 (계산식)
  프랑스 BDL(Bureau des Longitudes)/VSOP87은
 계산식(theory)으로
 이루어짐.
- JPL/DExxx (위치 추산 자료)
  미국 JPL/DExxx는 장기간에 걸친 위치를 수치적분에 의하여 미리
계산해 놓은 천체력(ephemeris).


DE102 : -1410 APR 16 to  3002 DEC 22 Created September 1981
DE200 :  1599 DEC 09 to  2169 MAR 31 Created September 1981
DE202 :  1899 DEC 04 to  2050 JAN 02 Created October 1987
DE403 :  1599 APR 29 to  2199 JUN 22 Created May 1993
DE405 :  1599 DEC 09 to  2201 FEB 20 Created May 1997
DE406 : -3001 FEB 04 to +3000 MAY 06 Created May 1997
DE410 :  1900 FEB 06 to  2019 DEC 15 Created April 2003
DE413 :  1899 DEC 04 to  2050 MAR 07 Created November 2004
DE414 :  1899 DEC 04 to  2050 MAR 07 Created May 2005
DE418 :  1899 JUL 29 to  2051 JAN 21 Created August 2007
DE421 :  1899 JUL 29 to  2053 OCT 09 Created Feb 2008
DE422 : -3000 DEC 07 to +3000 JAN 30 Created September 2009
DE423 :  1799 DEC 16 to  2200 FEB 02 Created February 2010