521.

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. Thu, 16 Feb 1956 at 20:20 EDT (24,989 days ago) in Aquarius

522.

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, 15 Feb 1956 at 07:40 EDT (24,990 days ago) in Leo

523.

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, 17 Jan 1956 at 23:14 EDT (25,018 days ago) in Lynx

524.

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. Sat, 01 Oct 1955 at 13:36 EDT (25,127 days ago) in Cetus

525.

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, 18 Aug 1955 at 22:43 EDT (25,171 days ago) in Leo

526.

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, 19 Jul 1955 at 18:48 EDT (25,201 days ago) in Lynx

527.

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, 08 Jul 1955 at 04:36 EDT (25,212 days ago) in Sagittarius

528.

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, 28 Mar 1955 at 20:55 EDT (25,314 days ago) in Cetus

529.

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, 14 Feb 1955 at 04:19 EDT (25,356 days ago) in Leo

530.

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, 16 Jan 1955 at 14:48 EDT (25,385 days ago) in Lynx

531.

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, 22 Nov 1954 at 01:04 EDT (25,440 days ago) in Libra

532.

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, 01 Oct 1954 at 00:07 EDT (25,492 days ago) in Cetus

533.

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. Tue, 17 Aug 1954 at 18:16 EDT (25,537 days ago) in Leo

534.

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. Sun, 18 Jul 1954 at 08:36 EDT (25,567 days ago) in Lynx

535.

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, 28 Mar 1954 at 08:43 EDT (25,679 days ago) in Cetus

536.

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. Tue, 23 Mar 1954 at 11:26 EDT (25,684 days ago) in Coma Berenices

537.

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. Sat, 13 Feb 1954 at 00:51 EDT (25,722 days ago) in Leo

538.

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. Fri, 15 Jan 1954 at 06:10 EDT (25,751 days ago) in Lynx

539.

1 Ceres at perihelion 1 Ceres passes its orbit's closest point to the Sun. Mon, 23 Nov 1953 at 21:00 EDT (25,804 days ago) in Leo

540.

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, 30 Sep 1953 at 11:43 EDT (25,858 days ago) in Cetus