321.

136108 Haumea at opposition 136108 Haumea lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Thu, 16 Mar 1989 at 11:02 EDT (12,886 days ago) in Coma Berenices

322.

136472 Makemake at opposition 136472 Makemake lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Wed, 22 Feb 1989 at 02:26 EDT (12,908 days ago) in Ursa Major

323.

134340 Pluto at solar conjunction 134340 Pluto is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Fri, 04 Nov 1988 at 15:16 EDT (13,018 days ago) in Libra

324.

136199 Eris at opposition 136199 Eris lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Sun, 09 Oct 1988 at 06:17 EDT (13,044 days ago) in Cetus

325.

136108 Haumea at solar conjunction 136108 Haumea is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sun, 18 Sep 1988 at 02:43 EDT (13,065 days ago) in Coma Berenices

326.

1 Ceres at opposition 1 Ceres lies in the opposite direction to the Sun in the sky, making it closer and brighter than at other times. It is also optimally positioned to be observable for much of the night. Fri, 16 Sep 1988 at 01:25 EDT (13,067 days ago) in Cetus

327.

136472 Makemake at solar conjunction 136472 Makemake is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Thu, 25 Aug 1988 at 23:15 EDT (13,089 days ago) in Ursa Major

328.

1 Ceres at aphelion 1 Ceres passes the furthest point along its orbit from the Sun. Thu, 26 May 1988 at 13:21 EDT (13,180 days ago) in Aquarius

329.

134340 Pluto at opposition 134340 Pluto lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Sun, 01 May 1988 at 07:54 EDT (13,205 days ago) in Virgo

330.

136199 Eris at solar conjunction 136199 Eris is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Tue, 05 Apr 1988 at 14:52 EDT (13,231 days ago) in Cetus

331.

136108 Haumea at opposition 136108 Haumea lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Tue, 15 Mar 1988 at 06:30 EDT (13,252 days ago) in Coma Berenices

332.

136472 Makemake at opposition 136472 Makemake lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Sun, 21 Feb 1988 at 18:41 EDT (13,275 days ago) in Ursa Major

333.

1 Ceres at solar conjunction 1 Ceres is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sun, 31 Jan 1988 at 10:13 EDT (13,296 days ago) in Capricornus

334.

134340 Pluto at solar conjunction 134340 Pluto is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Mon, 02 Nov 1987 at 19:01 EDT (13,386 days ago) in Virgo

335.

136199 Eris at opposition 136199 Eris lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Fri, 09 Oct 1987 at 18:22 EDT (13,410 days ago) in Cetus

336.

136108 Haumea at solar conjunction 136108 Haumea is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Thu, 17 Sep 1987 at 21:52 EDT (13,432 days ago) in Coma Berenices

337.

136472 Makemake at solar conjunction 136472 Makemake is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Tue, 25 Aug 1987 at 14:24 EDT (13,455 days ago) in Ursa Major

338.

1 Ceres at opposition 1 Ceres lies in the opposite direction to the Sun in the sky, making it closer and brighter than at other times. It is also optimally positioned to be observable for much of the night. Fri, 19 Jun 1987 at 12:03 EDT (13,522 days ago) in Sagittarius

339.

134340 Pluto at opposition 134340 Pluto lies in the opposite direction to the Sun in the sky, making it optimally positioned to be observable for much of the night. Wed, 29 Apr 1987 at 09:31 EDT (13,573 days ago) in Virgo

340.

136199 Eris at solar conjunction 136199 Eris is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Mon, 06 Apr 1987 at 02:42 EDT (13,596 days ago) in Cetus