21-Sgr (Star)
Color-magnitude diagram
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.
Finder chart
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From Cambridge , 21-Sgr is visible in the morning sky, becoming accessible around 01:17, when it reaches an altitude of 19° above your south-eastern horizon. It will then reach its highest point in the sky at 03:32, 27° above your southern horizon. It will be lost to dawn twilight around 03:59, 26° above your southern horizon.
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|
Name
21-Sgr
|
Object type
Star
|
Other names
Position
| Right ascension: | 18h25m21s [4] |
| Declination: | −20°32'30" [4] |
| Constellation: | Sagittarius |
| Magnitude: | 4.87 (V) [2] 6.78 (BT) [2] 5.03 (VT) [2] 4.34 (G) [4] 5.16 (BP) [4] 3.44 (RP) [4] |
| Distance: | 147.4 parsec 480.6 lightyrs [4] |
| B-V Color (mag): | 1.49 |
| Proper motion (speed): | 27.4 mas/yr[4] |
| Proper motion (pos ang): | 167.1° |
Derived quantities
| Absolute mag (V): | -0.97 |
Visibility from Cambridge
All times shown in Cambridge local time.