Astronomers: This is imporant!!!! Do you have a way to find out when pluto was in the constellation Libra?

This isn't about astrology necessarily I just want to find out when pluto was ACTUALLY in Libra. I believe Pluto was in Libra around the end of 1990. Can you find out or tell me how to find out?Astronomers: This is imporant!!!! Do you have a way to find out when pluto was in the constellation Libra?By using the Starry Night planetarium program and zooming in on the constellation boundaries I find that Pluto was in the constellation of Libra between the following dates:

05 Oct 1988 - 23 Apr 1989

26 Jul 1989 - 26 Nov 1989

04 Jun 1990 - 23 Sep 1990

28 Oct 1991 - 07 Apr 1992

15 Aug 1992 - 06 Jan 1995

07 May 1995 - 06 Nov 1995

The reason for the numerous dates is because it was skirting around the northern borders of the constellation.Astronomers: This is imporant!!!! Do you have a way to find out when pluto was in the constellation Libra?You can estimate it, then try an astronomy program to firm up the date. I like xephem.



If it's for astrology, you can make up any answer you like, because astrology is meaningless.