τ¹-Ser (Star)

Color-magnitude diagram
Image of τ¹-Ser
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
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From Cambridge , τ¹-Ser is visible in the dawn sky, rising at 03:20 (EST) – 3 hours and 33 minutes before the Sun – and reaching an altitude of 24° above the eastern horizon before fading from view as dawn breaks at around 05:40.

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Name τ¹-Ser
Object type Star
Other names
τ¹-Ser
Tau1 Serpentis Caput
9-Ser
9 Serpentis Caput
HR 5739[1]
HD 137471
NSV 7074
HIP 75530[3]
TYC 1487-1430-1[2]
Gaia EDR3- 1207119666851399040[4]
Position
Right ascension:15h25m47s [4]
Declination:+15°25'40" [4]
Constellation:Serpens Caput
Magnitude:
Variable
5.16 (V) [2]
7.31 (BT) [2]
5.34 (VT) [2]
4.41 (G) [4]
5.43 (BP) [4]
3.41 (RP) [4]
Distance:253.7 parsec
827.2 lightyrs [4]
B-V Color (mag):1.68
Proper motion (speed):15.3 mas/yr[4]
Proper motion (pos ang):239.4°
Derived quantities
Absolute mag (V):-1.86
Visibility from Cambridge

All times shown in Cambridge local time.

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Cambridge

Latitude:
Longitude:
Timezone:

42.38°N
71.11°W
EST

Color scheme