V640-Her (Star)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
From Fairfield , V640-Her will become visible at around 17:38 (EST), 28° above your western horizon, as dusk fades to darkness. It will then sink towards the horizon, setting 3 hours and 50 minutes after the Sun at 20:18.
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Name
V640-Her
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Object type
Star
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Other names
Position
| Right ascension: | 17h25m54s [4] |
| Declination: | +16°55'03" [4] |
| Constellation: | Hercules |
| Magnitude: Variable | 6.18 (V) [2] 8.14 (BT) [2] 6.34 (VT) [2] 4.76 (G) [4] 6.40 (BP) [4] 3.52 (RP) [4] |
| Distance: | 222.9 parsec 726.7 lightyrs [4] |
| B-V Color (mag): | 1.53 |
| Proper motion (speed): | 21.5 mas/yr[4] |
| Proper motion (pos ang): | 318.4° |
Derived quantities
| Absolute mag (V): | -0.56 |
Sources