V639-Cas (Star)
Color-magnitude diagram
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
Click and drag the chart above to pan around the sky, or use the mouse wheel to zoom.
Click to enlarge.
From Cambridge , V639-Cas is visible all night because it is circumpolar. It will be highest in the sky shortly before dawn, when it will be lost to twilight at around 05:18, 31° above your north-eastern horizon. At dusk, it will become visible at around 20:16 (EDT), 25° above your north-western horizon.
Begin typing the name of a town near to you, and then select the town from the list of options
which appear below.
|
Name
V639-Cas
|
Object type
Star
|
Position
| Right ascension: | 00h03m25s [4] |
| Declination: | +63°38'25" [4] |
| Constellation: | Cassiopeia |
| Magnitude: Variable | 6.27 (V) [2] 6.58 (BT) [2] 6.30 (VT) [2] 6.16 (G) [4] 6.32 (BP) [4] 5.80 (RP) [4] |
| Distance: | 763.4 parsec 2488.6 lightyrs [3] |
| B-V Color (mag): | 0.24 |
| Proper motion (speed): | 4.5 mas/yr[3] |
| Proper motion (pos ang): | 263.3° |
Derived quantities
| Absolute mag (V): | -3.14 |
Visibility from Cambridge
All times shown in Cambridge local time.