501.

The Moon at perihelion The Moon passes its orbit's closest point to the Sun, which happens each month around the time of new moon. Wed, 10 Feb 2021 at 04:48 EDT (1,232 days ago) in Capricornus

502.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 3°24'. Wed, 10 Feb 2021 at 06:11 EDT (1,232 days ago) in Capricornus

503.

New Moon The Moon disappears into the Sun's glare for a few days. Thu, 11 Feb 2021 at 14:06 EDT (1,231 days ago) in Capricornus

504.

The Moon at apogee The Moon recedes to its orbit's furthest point from the Earth, making it appear fractionally smaller than at other times of the month. Thu, 18 Feb 2021 at 05:21 EDT (1,224 days ago) in Aries

505.

Conjunction of the Moon and Mars The Moon and Mars share the same right ascension, at a separation of 3°41'. Thu, 18 Feb 2021 at 17:45 EDT (1,224 days ago) in Aries

506.

Close approach of the Moon and Mars The Moon and Mars pass close to each other. Thu, 18 Feb 2021 at 20:25 EDT (1,224 days ago) in Aries

507.

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. Fri, 19 Feb 2021 at 13:48 EDT (1,223 days ago) in Taurus

508.

Messier 81 is well placed Bode's Galaxy M81 (NGC 3031; mag 6.9) in Ursa Major culminates at around midnight local time. Fri, 19 Feb 2021 (1,223 days ago) in Ursa Major

509.

Venus at aphelion Venus passes the furthest point along its orbit from the Sun. Fri, 19 Feb 2021 at 22:05 EDT (1,223 days ago) in Capricornus

510.

The cluster NGC 3114 is well placed The open star cluster NGC 3114 (mag 4.2) in Carina culminates at around midnight local time. Sat, 20 Feb 2021 (1,222 days ago) in Carina

511.

Asteroid 29 Amphitrite at opposition Asteroid 29 Amphitrite makes closest approach to the Earth. Mon, 22 Feb 2021 at 09:22 EDT (1,220 days ago) in Leo

512.

Mercury at highest altitude in morning sky Mercury is bright and well placed in the dawn sky. Fri, 26 Feb 2021 (1,216 days ago) in Capricornus

513.

Full Moon The Moon reaches full phase and is visible for much of the night. Sat, 27 Feb 2021 at 03:17 EDT (1,215 days ago) in Leo

514.

Comet C/2021 D1 (SWAN) passes perihelion Comet C/2021 D1 (SWAN) makes its closest approach to the Sun. Sat, 27 Feb 2021 (1,215 days ago) in Pegasus

515.

The cluster IC 2581 is well placed The open star cluster IC 2581 (mag 4.0) in Carina culminates at around midnight local time. Sat, 27 Feb 2021 (1,215 days ago) in Carina

516.

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. Sun, 28 Feb 2021 at 22:57 EDT (1,214 days ago) in Virgo

517.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month. Tue, 02 Mar 2021 at 00:17 EDT (1,212 days ago) in Virgo

518.

Comet C/2020 R4 (ATLAS) passes perihelion Comet C/2020 R4 (ATLAS) makes its closest approach to the Sun. Tue, 02 Mar 2021 (1,212 days ago) in Aquarius

519.

Mercury at dichotomy Mercury reaches half phase in the dawn sky. Tue, 02 Mar 2021 at 09:18 EDT (1,212 days ago) in Capricornus

520.

Asteroid 4 Vesta at opposition Asteroid 4 Vesta makes closest approach to the Earth. Wed, 03 Mar 2021 at 16:34 EDT (1,211 days ago) in Leo