September 2027 · Verified space events
7 verified events for September 2027: launches, meteor showers, planets and Moon phases. Every entry names its source, shows times in UTC and in your own time zone, and can be added to your calendar. Where an agency has not announced a launch day, the entry says "Date TBD" instead of guessing.
| Date | Event | Best with |
|---|---|---|
| September 15, 2027 | Lucy Flyby of Asteroid Polymele | Mission updates (nothing to see from the ground) |
| September 15, 2027 | Harvest Moon | Naked eye or binoculars |
| September 23, 2027 | September Equinox | No equipment needed |
| September 24, 2027 | Mercury at Greatest Eastern Elongation | Binoculars |
| September 28, 2027 | Neptune at Opposition | Binoculars |
| September 30, 2027 | New Moon | Naked eye or binoculars |
| No earlier than September 2027 | Falcon 9 — NEO Surveyor Asteroid-Hunting Telescope | Launch stream |
NASA's Lucy spacecraft encounters the Jupiter Trojan asteroid (15094) Polymele and its satellite, the second Trojan flyby of its tour.
Sep 15, 23:04 UTC
The full Moon closest to the September equinox is the Harvest Moon. It is about 399,300 km away.
Sep 23, 06:01 UTC
Day and night are nearly equal. Autumn begins in the Northern Hemisphere and spring in the Southern. It is still September 22 on the U.S. Pacific coast.
Sep 24, 22:06 UTC
Mercury is 26.3 degrees east of the Sun in the evening twilight.
NASA's NEO Surveyor infrared space telescope is targeted to launch on a Falcon 9 from Florida no earlier than September 2027, bound for the Sun-Earth L1 point to find near-Earth asteroids larger than 140 m. This is a target, not a confirmed date.
Sep 28, 14:08 UTC
Neptune is opposite the Sun in Pisces and at its best for telescopes (magnitude 7.8). It is too faint to see without optics.
Sep 30, 02:36 UTC
The Moon is between Earth and the Sun and invisible, giving the darkest skies of the month for deep-sky observing and astrophotography.
September 2027 has 7 listed space events. Launches and missions: Lucy Flyby of Asteroid Polymele and Falcon 9 — NEO Surveyor Asteroid-Hunting Telescope. Planets and eclipses: Mercury at Greatest Eastern Elongation and Neptune at Opposition. Moon phases: New Moon September 30 at 02:36 UTC and Full Moon September 15 at 23:04 UTC. Launch dates marked NET are no earlier than and can change.
The full Moon in September 2027 is on September 15 at 23:04 UTC. A full Moon is above the horizon all night and brightens the sky, so faint meteors, the Milky Way and deep-sky objects are harder to see for a few nights around it; the New Moon is the darkest time.
No solar or lunar eclipses occur in September 2027.
You can download the free .ics calendar file for September 2027 directly from this page to sync with Apple Calendar, Google Calendar, or Outlook. Events whose date is still to be announced are left out until they are confirmed.
Every full moon, eclipse, meteor-shower peak, planetary opposition and elongation, close Moon–planet pairing, equinox, solstice and orbital extreme of 2027. Dates and times are calculated with an astronomical ephemeris and checked by automated tests, not copied from a list. Times are UTC; an event near midnight can fall on the previous or next day where you are.
Earth is closest to the Sun, about 0.983 AU (147.1 million km). Only the date is stated because the time is not tracked to the minute.
Peak night of the Quadrantids (radiant in Boötes, parent body Asteroid 2003 EH1), up to about 120 meteors per hour under ideal dark skies. The Moon is only about 14% lit, so skies are dark.
Venus is 47.0 degrees west of the Sun in the morning twilight. Venus shines brilliantly as the Morning Star.
The first full Moon of 2027 and the closest of the year, about 357,600 km away, so it looks slightly larger and brighter than usual.
A nearly full Moon (97% lit) passes 1.4 degrees from Jupiter in the sky all night. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
Mercury is 18.3 degrees east of the Sun in the evening twilight.
A ring-of-fire annular eclipse. The central path crosses southern South America and the South Atlantic. Annularity lasts up to 7 minutes 51 seconds at its longest, and a partial eclipse is visible across much of South America, Africa and Antarctica. Never look at the Sun without certified eclipse glasses.
Jupiter is opposite the Sun in Leo, at its brightest for the year (magnitude -2.6) and up all night, 4.36 AU from Earth.
Mars is opposite the Sun in Leo, at its brightest for the year (magnitude -1.2) and up all night. It is about 0.68 AU (101 million km) from Earth.
A nearly full Moon (99% lit) passes 1.1 degrees from Jupiter in the sky all night. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
The Moon passes through the outer part of Earth's shadow (penumbral magnitude 0.93), so it dims subtly rather than turning red. Greatest eclipse is at 23:13 UTC on February 20, which is the evening of February 20 in the Americas.
The February full Moon, about 363,300 km away, passes through the faint outer part of Earth's shadow in a penumbral lunar eclipse.
A crescent Moon (12% lit) passes 2.0 degrees from Venus in the morning sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
A very thin crescent Moon (4% lit) passes 1.1 degrees from Mercury in the morning sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
Mercury is 27.6 degrees west of the Sun in the morning twilight.
A gibbous Moon (88% lit) passes 0.9 degrees from Jupiter in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
Day and night are nearly equal. Spring begins in the Northern Hemisphere and autumn in the Southern.
The last full Moon of northern winter, about 372,500 km away. It is traditionally the Worm Moon.
A crescent Moon (9% lit) passes 2.9 degrees from Venus in the morning sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
A gibbous Moon (68% lit) passes 0.9 degrees from Jupiter in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
A gibbous Moon (72% lit) passes 3.0 degrees from Mars in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
The first full Moon of northern spring is traditionally the Pink Moon. It is about 383,400 km away and washes out the Lyrid meteor shower.
Peak night of the Lyrids (radiant in Lyra, parent body Comet C/1861 G1 (Thatcher)), up to about 18 meteors per hour under ideal dark skies. The Moon is about 96% lit and will wash out the fainter meteors.
Peak night of the Eta Aquariids (radiant in Aquarius, parent body Comet 1P/Halley), up to about 50 meteors per hour under ideal dark skies. The Moon is only about 1% lit, so skies are dark.
Venus and Saturn pass 0.6 degrees apart in the morning sky, close enough to share the field of view of binoculars.
A half Moon (47% lit) passes 1.2 degrees from Jupiter in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
A gibbous Moon (56% lit) passes 3.0 degrees from Mars in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
The May full Moon is traditionally the Flower Moon, about 393,900 km away.
Mercury is 22.9 degrees east of the Sun in the evening twilight.
A very thin crescent Moon (3% lit) passes 2.7 degrees from Mercury in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
A crescent Moon (27% lit) passes 1.7 degrees from Jupiter in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
The June full Moon is traditionally the Strawberry Moon, about 401,900 km away. It is full just after midnight UTC, so on the evening of June 18 in the Americas.
The longest day in the Northern Hemisphere and the start of summer there; winter begins in the south.
Earth is farthest from the Sun, about 1.017 AU (152.1 million km). Only the date is stated because the time is not tracked to the minute.
A crescent Moon (12% lit) passes 2.2 degrees from Jupiter in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
Mercury is 20.7 degrees west of the Sun in the morning twilight.
The July full Moon is the farthest of 2027, about 406,000 km away. It grazes the outer edge of Earth's shadow in a penumbral eclipse so shallow that no darkening is expected.
A very shallow penumbral eclipse (penumbral magnitude 0.0014), so the Moon only grazes the edge of Earth's shadow, so no darkening is expected to be visible.
Peak night of the Southern Delta Aquariids (radiant in Aquarius, parent body Comet 96P/Machholz), up to about 25 meteors per hour under ideal dark skies. The Moon is only about 10% lit, so skies are dark.
The longest total solar eclipse until 2114. Totality crosses southern Spain and Gibraltar, Morocco, Algeria, Tunisia, Libya, Egypt, Saudi Arabia, Yemen and Somalia, lasting up to 6 minutes 23 seconds. Greatest eclipse is at 10:07 UTC, in Egypt. A partial eclipse is visible across most of Europe, much of Africa and the Middle East.
A very thin crescent Moon (3% lit) passes 2.7 degrees from Jupiter in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
Peak night of the Perseids (radiant in Perseus, parent body Comet 109P/Swift-Tuttle), up to about 100 meteors per hour under ideal dark skies. The Moon is about 83% lit and will wash out the fainter meteors.
The Moon passes through the outer part of Earth's shadow (penumbral magnitude 0.55), a subtle dimming best seen from the Americas around the peak at 07:14 UTC.
The August full Moon, about 405,100 km away, passes through Earth's penumbra. It rises as the Perseids are fading.
The full Moon closest to the September equinox is the Harvest Moon. It is about 399,300 km away.
Day and night are nearly equal. Autumn begins in the Northern Hemisphere and spring in the Southern. It is still September 22 on the U.S. Pacific coast.
Mercury is 26.3 degrees east of the Sun in the evening twilight.
Neptune is opposite the Sun in Pisces and at its best for telescopes (magnitude 7.8). It is too faint to see without optics.
A very thin crescent Moon (5% lit) passes 1.6 degrees from Mercury in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
Peak night of the Draconids (radiant in Draco, parent body Comet 21P/Giacobini-Zinner), up to about 10 meteors per hour under ideal dark skies. The Moon is about 63% lit and will wash out the fainter meteors.
The first full Moon after the Harvest Moon is traditionally the Hunter's Moon, about 389,900 km away.
Saturn is opposite the Sun in Pisces and at its brightest for the year (magnitude -0.1), up all night: an excellent night for a first look at the rings through a telescope.
Peak night of the Orionids (radiant in Orion, parent body Comet 1P/Halley), up to about 20 meteors per hour under ideal dark skies. The Moon is about 60% lit, a moderate hindrance.
Mercury is 18.8 degrees west of the Sun in the morning twilight.
Peak night of the Taurids (radiant in Taurus, parent body Comet 2P/Encke), up to about 5 meteors per hour under ideal dark skies. The Moon is about 45% lit, a moderate hindrance.
The November full Moon is traditionally the Beaver Moon, about 378,800 km away.
Peak night of the Leonids (radiant in Leo, parent body Comet 55P/Tempel-Tuttle), up to about 15 meteors per hour under ideal dark skies. The Moon is about 84% lit and will wash out the fainter meteors.
Venus and Mars pass 0.3 degrees apart in the evening sky, close enough to share the field of view of binoculars.
A very thin crescent Moon (5% lit) passes 1.5 degrees from Mars in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
Uranus is opposite the Sun in Taurus and at its best (magnitude 5.6). It is faintly visible to the naked eye under very dark skies and easy in binoculars.
A very thin crescent Moon (6% lit) passes 0.9 degrees from Venus in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
Peak night of the Geminids (radiant in Gemini, parent body Asteroid 3200 Phaethon), up to about 150 meteors per hour under ideal dark skies. The Moon is about 100% lit and will wash out the fainter meteors.
The December full Moon, about 368,100 km away, falls on the night of the Geminid meteor shower peak, so it will wash out all but the brightest Geminids.
The shortest day in the Northern Hemisphere and the start of winter there; summer begins in the south. It is still December 21 in the Americas.
Peak night of the Ursids (radiant in Ursa Minor, parent body Comet 8P/Tuttle), up to about 10 meteors per hour under ideal dark skies. The Moon is only about 25% lit, so skies are dark.
A very thin crescent Moon (3% lit) passes 0.5 degrees from Mars in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.
A crescent Moon (9% lit) passes 2.9 degrees from Venus in the evening sky. This is the closest approach as seen from Earth's center; the separation shifts by up to about 1 degree depending on where you are.