Sky Events for:
October - 2021
10/4 – 10/18 Before morning twilight: For this two week period the Zodiacal light will
be visible. Look for a tall, dim pyramid of light stretching up through
Cancer and Gemini to Taurus. DARK SKIES are a must. See below for more
information on the zodiacal light.
10/4 Io and Shadow Transit on Jupiter. 8:30pm Io and Shadow visible. 9:30 Io leaves
Jupiter. 10:30 Io’s shadow leaves jupiter
10/6 New Moon
10/8 Mars in conjunction with the Sun. Not visible, but important because this starts
the new apparition. Mars will not be visible again naked eye, until late November
in the morning sky. The next Opposition of Mars (it’s closest) will be in Dec. 2022.
10/9 Evening: Low in the southwest, Venus will be in the “head” of Scorpius, with the
four-day-old Moon in conjunction, just 2.5 degrees above and left of Venus. In a 5
degree binocular view you will see: the Moon, Venus, Delta Scorpii, Beta Scorpii,
Nu Scorpii, and the pretty double Omega Scorpii, in one view.
10/10 Evening: The Moon will be above and left of Antares, in Scorpius.
10/13 First Quarter Moon
10/14 Evening: The Moon, Saturn, and Jupiter form a triangle. With Saturn 4 degrees
North of the Moon.
10/15 Evening: Jupiter will be 4 degrees North of the Moon.
10/16 Evening: Venus will be within 1.5 degrees of Antares. These two objects don’t
usually get this close. If you miss this one you will have to wait until October
2029 before you will see them this close again.
10/19 Io transits Jupiter and a Double Shadow Transit. 12:12am - Io’s shadow and
Ganymede’s shadow. 12:20 – Ganymede’s shadow leaves Jupiter.
10/20 Full Moon: October is the Hunter’s Moon, Blood Moon (not the same as eclipse),
Sanguine Moon (the first full moon after the Harvest Moon – blood red because
of the dusty atmosphere after harvest) and Dying Grass Moon.
10/21 Orionid meteor shower peaks this morning, although an almost full Moon will
greatly hamper viewing.
10/23 Dawn: A waning gibbous Moon is 4 degrees left of the Pleiades, in the west-