Unukalhai (Star)

Color-magnitude diagram
Image of Unukalhai
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
Please wait
Loading 0/4
Click and drag to rotate
Mouse wheel to zoom in/out
Touch with mouse to dismiss
Click and drag the chart above to pan around the sky, or use the mouse wheel to zoom. Click to enlarge.

Show information for


From Cambridge , Unukalhai is difficult to observe as it will appear no higher than 17° above the horizon. It is visible in the dawn sky, rising at 04:14 (EST) – 2 hours and 39 minutes before the Sun – and reaching an altitude of 17° above the eastern horizon before fading from view as dawn breaks at around 05:50.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.
Name Unukalhai
Object type Star
Other names
Unukalhai
α-Ser
Alpha Serpentis Caput
24-Ser
24 Serpentis Caput
HR 5854[1]
HD 140573
HIP 77070[5]
TYC 363-1135-1[4]
Gaia EDR3- 4429785739602747392[6]
Position
Right ascension:15h44m16s [6]
Declination:+06°25'32" [6]
Constellation:Serpens Caput
Magnitude:2.63 (V) [3]
4.17 (BT) [2]
2.76 (VT) [2]
2.33 (G) [6]
3.32 (BP) [6]
1.98 (RP) [6]
Distance:22.8 parsec
74.2 lightyrs [6]
B-V Color (mag):1.18
Proper motion (speed):141.5 mas/yr[6]
Proper motion (pos ang):71.2°
Derived quantities
Absolute mag (V):0.84
Visibility from Cambridge

All times shown in Cambridge local time.

Share

Cambridge

Latitude:
Longitude:
Timezone:

42.38°N
71.11°W
EST

Color scheme