401.

The Whirlpool Galaxy is well placed The Whirlpool Galaxy M51 (NGC 5194; mag 8.4) in Canes Venatici culminates at around midnight local time. Fri, 14 Apr 2017 (2,627 days ago) in Canes Venatici

402.

The Moon at aphelion The Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon. Fri, 14 Apr 2017 at 01:19 PDT (2,627 days ago) in Libra

403.

Uranus at solar conjunction Uranus 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, 13 Apr 2017 at 22:21 PDT (2,628 days ago) in Pisces

404.

Omega Centauri is well placed The brightest globular cluster in the sky, Omega Centauri (mag 3.6) culminates at around midnight local time. Thu, 13 Apr 2017 (2,628 days ago) in Centaurus

405.

Centaurus A is well placed Centaurus A (NGC 5128; mag 7.0) culminates at around midnight local time. Thu, 13 Apr 2017 (2,628 days ago) in Centaurus

406.

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, 13 Apr 2017 at 10:00 PDT (2,628 days ago) in Bootes

407.

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. Wed, 12 Apr 2017 at 20:40 PDT (2,629 days ago) in Cetus

408.

Conjunction of Mars and Ceres Mars and Ceres share the same right ascension, at a separation of 3°03'. Tue, 11 Apr 2017 at 16:52 PDT (2,630 days ago) in Aries

409.

Full Moon The Moon reaches full phase and is visible for much of the night. Mon, 10 Apr 2017 at 23:08 PDT (2,631 days ago) in Virgo

410.

Close approach of the Moon and Jupiter The Moon and Jupiter pass close to each other. Mon, 10 Apr 2017 at 15:42 PDT (2,631 days ago) in Virgo

411.

Conjunction of the Moon and Jupiter The Moon and Jupiter share the same right ascension, at a separation of 2°10'. Mon, 10 Apr 2017 at 14:21 PDT (2,631 days ago) in Virgo

412.

Comet 41P/Tuttle-Giacobini-Kresak passes perihelion Comet 41P/Tuttle-Giacobini-Kresak makes its closest approach to the Sun. Mon, 10 Apr 2017 (2,631 days ago) in Hercules

413.

Asteroid 63 Ausonia at opposition Asteroid 63 Ausonia makes closest approach to the Earth. Mon, 10 Apr 2017 at 02:34 PDT (2,631 days ago) in Virgo

414.

Jupiter at perigee Jupiter reaches its closest point to the Earth – marking the best time to observe it in 1970. Sat, 08 Apr 2017 at 14:23 PDT (2,633 days ago) in Virgo

415.

Jupiter at opposition Jupiter lies in the opposite direction to the Sun in the sky, making it slightly closer, brighter and larger than at other times. It is also optimally positioned to be observable for much of the night. Fri, 07 Apr 2017 at 14:31 PDT (2,634 days ago) in Virgo

416.

Lunar occultation of Regulus The Moon will pass in front of Regulus (Alpha Leonis), creating a lunar occultation visible from Argentina, Chile, French Polynesia and Pitcairn. Thu, 06 Apr 2017 at 21:33 PDT (2,635 days ago) in Leo

417.

Saturn enters retrograde motion Saturn reverses its direction of motion across the sky. Wed, 05 Apr 2017 at 22:18 PDT (2,636 days ago) in Sagittarius

418.

The Jewel Box cluster is well placed The Jewel Box open star cluster (NGC 4755, also known as the Kappa Crucis Cluster; mag 4.2) in Crux culminates at around midnight local time. Wed, 05 Apr 2017 (2,636 days ago) in Crux

419.

Messier 94 is well placed M94 (mag 8.2), a spiral galaxy in Canes Venatici culminates at around midnight local time. Tue, 04 Apr 2017 (2,637 days ago) in Canes Venatici

420.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and setting in the west at around midnight. Mon, 03 Apr 2017 at 11:39 PDT (2,638 days ago) in Gemini