V640-Cas (Star)

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

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From Cambridge , V640-Cas is visible in the dawn sky, becoming accessible around 04:01 (EDT), when it reaches an altitude of 21° above your north-eastern horizon. It will then reach an altitude of 29° before fading from view as dawn breaks at 05:14.

Name V640-Cas
Object type Star
Other names
V640 Cas
HR 5[1]
HD 123
HIP 518[3]
TYC 3664-1986-1[2]
Position
Right ascension:00h06m15s [2]
Declination:+58°26'12" [2]
Constellation:Cassiopeia
Magnitude:
Variable
6.36 (V) [2]
7.12 (BT) [2]
6.42 (VT) [2]
Distance:21.5 parsec
70.0 lightyrs [3]
B-V Color (mag):0.60
Proper motion (speed):247.7 mas/yr[3]
Proper motion (pos ang):86.4°
Derived quantities
Absolute mag (V):4.70

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