21 Sgr Position and Visibility Tonight
Where is 21 Sgr right now?
21 Sgr is located in the constellation Sagittarius. It is currently below the horizon and is not visible from your location.
21 Sgr visibility on 2026-10-24
21 Sgr Visible from sunset until before midnight
21 Sgr rise and set timetable
| Time | Elevation | |
Moonrise, 88% illuminated  | 14:51 | 32° |
| 21 Sgr transit | 15:23 | 32° |
| Sunset | 16:18 | 31° |
| Civil sunset | 16:46 | 29° |
| Twilight start (−12°) | 17:17 | 26° |
| Astronomical observing session begins | 17:47 | 23° |
| 21 Sgr set | 20:16 | |
| Moonset | 03:47 | -72° |
| Astronomical observing session ends | 03:57 | -71° |
| 21 Sgr rise | 10:26 |
Track 21 Sgr position throughout the night
← 24 October 2026 →
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Shift the map to change the time and observe 21 Sgr changing position in the night sky.
Star system description: 21 Sgr
A double or multiple star system in Sagittarius.
Pair AB has a measured separation of 1.7″; a telescope may be needed to split it.
The diagram uses the latest WDS measurements; north is up and east is right. Measurements may be from different years. Unconnected groups are arranged separately; close pairs may merge, and pairs without reliable geometry are omitted.
Technical details: 21 Sgr
| Property | Value |
|---|---|
| System identifier | WDS 18254-2033 |
| Bayer / Flamsteed designation | 21 Sgr |
| Constellation | Sagittarius |
| System type | double star system |
| Right ascension (RA) | 18h 25m 21s" |
| Declination (Dec) | -20° 32' 29s |
| Component | AB |
| Primary magnitude | 5.03 |
| Secondary magnitude | 7.43 |
| Separation (arcseconds) | 1.7″ |
| Position angle | 280° |
| Discovery year | 1846 |
| Last observed | 2008 |
| Spectral type (primary/secondary) | K1III+A1V |
| Number of observations | 34 |
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for 21 Sgr
21 Sgr Passage Through Night
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Current position of 21 Sgr
| Time | 23:52 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | -42° |
| Azimuth | 275° |
Here you can see the current position of 21 Sgr on the map, as well as its positions for rise and set. This tool lets you track its movement throughout the night with accurate, up-to-date information.
When Is 21 Sgr Visible Throughout the Year?
21 Sgr will become visible again around March 28 after moving far enough from the Sun.
| Date | Sun, 25 October 2026 |
| Astronomical observing session begins | 17:41 |
| Astronomical observing session ends | 03:51 |
| Astronomical observing duration | 10h 10m |
| Rise | 10:26 |
| Set | 20:12 |
| Elevation at transit | 32° |
| Transit time | 15:19 |
| Equatorial coordinates | RA: 18h 25m 21s", Dec: -20° 32' 29s |
| Magnitude | 5 |
| Constellation | Sagittarius |
The graph illustrates the annual visibility pattern of 21 Sgr, including its daily appearances and transit times. The vertical axis shows the hours of the day and the horizontal axis spans the year. The reddish area marks when the object is above the horizon, while the white line marks its daily transit.
You can also see when 21 Sgr is visible throughout the year in a table with exact rise, transit, and set times for each date.
You can also see when 21 Sgr is visible throughout the year in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of 21 Sgr
Coordinates and Visibility
| Right Ascension | 18h 25m 21s |
| Declination | -20° 32′ 30″ |
| Magnitude | 5.03 |
| Constellation | Sagittarius |
| Elevation | -41.8° |
| Azimuth | 275.2° |