SEPTEMBER, 2021 SKYNOTES

The phenomena of the month : JULY 2021
Times are given in daylight time for SCARBOROUGH (0° 25' 5" W, 54° 16' 30" N, zone 0 = UNIVERSAL TIME).

Date Hour Description of the phenomenon
yyyy mm dd hh:mm

yyyy mm dd hh:mm

2021 09 01 00:30 End of occultation of 132 Tau (magn. = 4.88)
2021 09 01 11:09 Maximum of the variable star eta Aquilae
2021 09 01 14:38 Minimum of the variable star Algol (beta Persei)
2021 09 01 19:48 Minimum of the variable star beta Lyrae
2021 09 01 23:55 Maximum of the variable star Mira (omicron Ceti)
2021 09 02 01:06 End of occultation of 27-epsilon Gem, Mebsuta, (magn. = 3.06)
2021 09 03 02:43 Beginning of occultation of 77-kappa Gem (magn. = 3.57)
2021 09 03 03:31 Close encounter between the Moon and Pollux (topocentric dist. centre to centre = 3.6°)
2021 09 03 03:40 End of occultation of 77-kappa Gem (magn. = 3.57)
2021 09 04 02:34 Maximum of the variable star delta Cephei
2021 09 04 04:06 Close encounter between the Moon and M 44 (topocentric dist. centre to centre = 2.3°)
2021 09 04 11:27 Minimum of the variable star Algol (beta Persei)
2021 09 05 20:44 Close encounter between Venus and Spica (topocentric dist. centre to centre = 1.6°)
2021 09 06 00:00 Mercury at its aphelion (distance to the Sun = 0.46670 AU)
2021 09 06 01:00 Simultaneous transits on Jupiter: two satellites and shadow of one satellite.
2021 09 07 00:52 NEW MOON
2021 09 07 08:15 Minimum of the variable star Algol (beta Persei)
2021 09 08 15:23 Maximum of the variable star eta Aquilae
2021 09 09 00:21 Close encounter between the Moon and Mercury (topocentric dist. centre to centre = 5.1°)
2021 09 09 01:19 Comet 4P Faye at its perihelion (dist. to the Sun = 1.613 AU; magn. = 11.7)
2021 09 09 05:17 Meteor shower : Sept. Perseids (5 meteors/hour at zenith; duration = 16.0 days)
2021 09 09 11:21 Maximum of the variable star delta Cephei
2021 09 09 13:50 Maximum of the variable star zeta Gemini
2021 09 10 03:59 Close encounter between the Moon and Venus (topocentric dist. centre to centre = 3.2°)
2021 09 10 05:04 Minimum of the variable star Algol (beta Persei)
2021 09 11 03:47 Opposition of the asteroid 2 Pallas with the Sun (dist. to the Sun = 3.145 AU; magn. = 8.5)
2021 09 11 10:06 Moon at perigee (geocentric dist. = 368461 km)
2021 09 13 01:53 Minimum of the variable star Algol (beta Persei)
2021 09 13 20:39 FIRST QUARTER OF THE MOON
2021 09 14 00:00 GREATEST EASTERN ELONGATION of Mercury (26.6°)
2021 09 14 09:22 OPPOSITION of Neptune with the Sun
2021 09 14 18:23 Minimum of the variable star beta Lyrae
2021 09 14 19:35 End of occultation of HD 167818 (magn. = 4.66)
2021 09 14 20:08 Maximum of the variable star delta Cephei
2021 09 15 19:38 Maximum of the variable star eta Aquilae
2021 09 15 22:41 Minimum of the variable star Algol (beta Persei)
2021 09 16 06:09 Close encounter between the Moon and Pluto (topocentric dist. centre to centre = 2.7°)
2021 09 17 05:19 Close encounter between the Moon and Saturn (topocentric dist. centre to centre = 4.1°)
2021 09 17 19:16 Comet 6P d'Arrest at its perihelion (dist. to the Sun = 1.355 AU; magn. = 9.9)
2021 09 18 09:15 Close encounter between the Moon and Jupiter (topocentric dist. centre to centre = 4.3°)
2021 09 18 19:30 Minimum of the variable star Algol (beta Persei)
2021 09 19 17:25 Maximum of the variable star zeta Gemini
2021 09 20 04:56 Maximum of the variable star delta Cephei
2021 09 20 11:46 Close encounter between the Moon and Neptune (topocentric dist. centre to centre = 4.3°)
2021 09 20 23:55 FULL MOON
2021 09 21 16:18 Minimum of the variable star Algol (beta Persei)
2021 09 21 23:46 Close encounter between Mercury and Spica (topocentric dist. centre to centre = 1.4°)
2021 09 22 19:21 AUTUMN EQUINOX
2021 09 22 23:53 Maximum of the variable star eta Aquilae
2021 09 24 13:07 Minimum of the variable star Algol (beta Persei)
2021 09 24 17:01 Close encounter between the Moon and Uranus (topocentric dist. centre to centre = 2.1°)
2021 09 25 13:43 Maximum of the variable star delta Cephei
2021 09 26 21:44 Moon at apogee (geocentric dist. = 404640 km)
2021 09 27 09:56 Minimum of the variable star Algol (beta Persei)
2021 09 27 16:58 Minimum of the variable star beta Lyrae
2021 09 29 01:57 LAST QUARTER OF THE MOON
2021 09 29 20:59 Maximum of the variable star zeta Gemini
2021 09 30 02:14 Beginning of occultation of 57 Gem (magn. = 5.04)
2021 09 30 03:02 End of occultation of 57 Gem (magn. = 5.04)
2021 09 30 04:09 Maximum of the variable star eta Aquilae
2021 09 30 06:44 Minimum of the variable star Algol (beta Persei)
2021 09 30 22:30 Maximum of the variable star delta Cephei

Calculations courtesy of: CoelixApex software.