Tonight over San Francisco, 16 of the bright, easy-to-spot constellations climb high into a dark sky. Here's what's up, how high, and which way to face.
DARK-SKY WINDOW TONIGHT · SAN FRANCISCO
Dark by9:43 PM
Until5:48 AM
High up now16
Never rise here2
Altitudes computed for San Francisco (37.8°, -122.4°) during tonight's dark hours.
High in the sky over San Francisco tonight
90° UPAndromedathe Chained Princess
Looknorthern sky
Anchor starAlpheratz
How to know itHome to the Andromeda Galaxy — the most distant thing visible to the naked eye, a faint smudge on a dark night.
89° UPLyrathe Lyre
Looksouthern sky
Anchor starVega
How to know itSmall but led by Vega, one of the brightest stars in the sky and a corner of the Summer Triangle.
86° UPCygnusthe Swan / the Northern Cross
Looknorthern sky
Anchor starDeneb
How to know itA great cross of stars flying down the summer Milky Way, with brilliant Deneb at its tail.
83° UPPerseusthe Hero
Looknorthern sky
Anchor starMirfak
How to know itA rich slice of the Milky Way and the radiant of the August Perseid meteor shower.
82° UPBoötesthe Herdsman
Looksouthern sky
Anchor starArcturus
How to know itA kite-shaped figure led by Arcturus, the brightest star of the northern spring sky.
77° UPGeminithe Twins
Looksouthern sky
Anchor starPollux
How to know itThe twin stars Castor and Pollux head two parallel lines of stars — and host the December Geminid meteors.
72° UPUrsa Majorthe Great Bear / the Big Dipper
Looknorthern sky
Anchor starAlioth
How to know itHome to the Big Dipper (the Plough), whose two end stars point to Polaris, the North Star.
72° UPPegasusthe Winged Horse
Looksouthern sky
Anchor starMarkab
How to know itThe "Great Square" of Pegasus is a big, easy autumn signpost high in the eastern sky.
70° UPTaurusthe Bull
Looksouthern sky
Anchor starAldebaran
How to know itMarked by orange Aldebaran and the tiny, sparkling Pleiades star cluster on the Bull’s shoulder.
68° UPCassiopeiathe Queen
Looknorthern sky
Anchor starSchedar
How to know itA bright "W" or "M" of five stars, circling the north pole opposite the Big Dipper — useful for finding north.
67° UPLeothe Lion
Looksouthern sky
Anchor starRegulus
How to know itA backwards question-mark (the "Sickle") forms the Lion’s head, anchored by bright Regulus.
55° UPAquilathe Eagle
Looksouthern sky
Anchor starAltair
How to know itBright Altair completes the Summer Triangle with Vega and Deneb, straddling the celestial equator.
52° UPOrionthe Hunter
Looksouthern sky
Anchor starRigel / Betelgeuse
How to know itThe most recognisable constellation on Earth — the three-star Belt sits almost on the celestial equator, so nearly everyone can see it.
30° UPCanis Majorthe Great Dog
Looksouthern sky
Anchor starSirius
How to know itContains Sirius, the brightest star in the entire night sky, trailing just behind Orion.
24° UPSagittariusthe Archer / the Teapot
Looksouthern sky
Anchor starKaus Australis
How to know itIts bright stars form a "Teapot" — and it points straight at the dense, glowing centre of the Milky Way.
22° UPScorpiusthe Scorpion
Looksouthern sky
Anchor starAntares
How to know itA genuinely scorpion-shaped curve of stars led by red Antares, riding low across the southern summer sky.
“Up” is the highest the centre of each pattern gets above the horizon tonight — your fist at arm's length spans about 10°. Directions are where to face when it's best placed.
Low on the horizon from San Francisco
These clear the horizon but stay low, so trees and buildings may hide them: Centaurus (~2°, southern).
Out of reach from San Francisco
At San Francisco's latitude these never climb above the horizon, so you can't see them from here at any time of year: Crux, Carina. To catch them, you'd need to travel toward the Southern Hemisphere.