θ-CrB (Star)

R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.

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From Fairfield , θ-CrB is visible in the dawn sky, rising at 03:08 (EST) – 3 hours and 37 minutes before the Sun – and reaching an altitude of 22° above the north-eastern horizon before fading from view as dawn breaks at around 05:36.

Name θ-CrB
Object type Star
Other names
θ-CrB
Theta Coronae Borealis
4-CrB
4 Coronae Borealis
HR 5778[1]
HD 138749
NSV 7134
HIP 76127[3]
TYC 2564-1629-1[2]
Gaia EDR3- 1274286186493145728[4]
Position
Right ascension:15h32m55s [4]
Declination:+31°21'32" [4]
Constellation:Corona Borealis
Magnitude:
Variable
4.16 (V) [2]
4.00 (BT) [2]
4.14 (VT) [2]
4.24 (G) [4]
4.07 (BP) [4]
4.22 (RP) [4]
Distance:121.7 parsec
396.9 lightyrs [4]
B-V Color (mag):-0.12
Proper motion (speed):23.8 mas/yr[4]
Proper motion (pos ang):239.8°
Derived quantities
Absolute mag (V):-1.27

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