321.

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. Mon, 11 May 1992 at 23:25 PDT (12,106 days ago) in Serpens Caput

322.

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 1992 at 14:41 PDT (12,141 days ago) in Cetus

323.

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. Wed, 18 Mar 1992 at 23:54 PDT (12,159 days ago) in Coma Berenices

324.

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. Tue, 25 Feb 1992 at 23:52 PDT (12,181 days ago) in Ursa Major

325.

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. Mon, 09 Dec 1991 at 21:20 PDT (12,260 days ago) in Ophiuchus

326.

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. Wed, 13 Nov 1991 at 01:33 PDT (12,286 days ago) in Libra

327.

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. Thu, 10 Oct 1991 at 18:12 PDT (12,320 days ago) in Cetus

328.

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. Sat, 21 Sep 1991 at 16:52 PDT (12,339 days ago) in Coma Berenices

329.

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. Fri, 30 Aug 1991 at 00:12 PDT (12,361 days ago) in Ursa Major

330.

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. Fri, 10 May 1991 at 01:46 PDT (12,473 days ago) in Serpens Caput

331.

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. Sun, 14 Apr 1991 at 21:21 PDT (12,499 days ago) in Virgo

332.

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. Sun, 07 Apr 1991 at 03:15 PDT (12,506 days ago) in Cetus

333.

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. Mon, 18 Mar 1991 at 19:24 PDT (12,526 days ago) in Coma Berenices

334.

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, 24 Feb 1991 at 16:33 PDT (12,548 days ago) in Ursa Major

335.

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. Sat, 10 Nov 1990 at 06:18 PDT (12,654 days ago) in Serpens Caput

336.

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. Wed, 10 Oct 1990 at 06:41 PDT (12,685 days ago) in Cetus

337.

1 Ceres at perihelion 1 Ceres passes its orbit's closest point to the Sun. Thu, 20 Sep 1990 at 22:13 PDT (12,705 days ago) in Leo

338.

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, 20 Sep 1990 at 11:55 PDT (12,705 days ago) in Coma Berenices

339.

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, 28 Aug 1990 at 15:39 PDT (12,728 days ago) in Ursa Major

340.

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. Fri, 17 Aug 1990 at 00:06 PDT (12,739 days ago) in Leo