τ-Oph (Star)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
From Fairfield , τ-Oph is visible in the evening sky, becoming accessible around 21:43 (EDT), 36° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 23:10, 40° above your southern horizon. It will continue to be observable until around 02:44, when it sinks below 20° above your south-western horizon.
Name
τ-Oph
|
Object type
Star
|
Other names
Position
Right ascension: | 18h03m04s [4] |
Declination: | −08°10'49" [4] |
Constellation: | Ophiuchus |
Magnitude: Variable | 5.23 (V) [2] 5.70 (BT) [2] 5.27 (VT) [2] 5.13 (G) [4] 5.15 (BP) [4] 4.63 (RP) [4] |
Distance: | 55.0 parsec 179.2 lightyrs [4] |
B-V Color (mag): | 0.36 |
Proper motion (speed): | 39.8 mas/yr[4] |
Proper motion (pos ang): | 161.4° |
Derived quantities
Absolute mag (V): | 1.53 |
Sources