23 UMa Position and Visibility Tonight
Where is 23 UMa right now?
23 UMa is located in the constellation Ursa Major. It is currently above the horizon at an altitude of 38° toward the north-east, with an apparent magnitude of 3.65.
23 UMa visibility on 2026-11-06
23 UMa Visible all night
23 UMa rise and set timetable
| Time | Elevation | |
| 23 UMa is always above the horizon | ||
Moonrise, 18.4% illuminated  | 22:13 | 49° |
| 23 UMa transit | 02:04 | 67° |
| Moonset | 10:25 | 22° |
| Sunset | 12:23 | 15° |
| Civil sunset | 12:53 | 14° |
| Twilight start (−12°) | 13:25 | 13° |
| Astronomical observing session begins | 13:57 | 13° |
| 23 UMa is always above the horizon | ||
| Astronomical observing session ends | 00:34 | 64° |
| Twilight end (−12°) | 01:06 | 66° |
| Civil sunrise | 01:38 | 67° |
| Sunrise | 02:08 | 67° |
Track 23 UMa position throughout the night
← 6 November 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe 23 UMa changing position in the night sky.
Star system description: 23 UMa
A double or multiple star system in Ursa Major.
Pair AB has a measured separation of 22.7″; 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: 23 UMa
| Property | Value |
|---|---|
| System identifier | WDS 09315+6304 |
| Bayer / Flamsteed designation | 23 UMa |
| Constellation | Ursa Major |
| System type | multiple star system |
| Right ascension (RA) | 09h 31m 31s" |
| Declination (Dec) | 63° 03' 42s |
| Component | AB |
| Primary magnitude | 3.65 |
| Secondary magnitude | 9.19 |
| Separation (arcseconds) | 22.7″ |
| Position angle | 267° |
| Discovery year | 1781 |
| Last observed | 2016 |
| Spectral type (primary/secondary) | F0IV+K5V |
| Number of observations | 56 |
3 components are identified in WDS; this is not a count of resolved stars.
Components of 23 UMa
Each row is a separate WDS component pair. Measurements may come from different years.
| Component | Primary magnitude | Secondary magnitude | Separation (arcseconds) | Position angle | Last observed |
|---|---|---|---|---|---|
| AB | 3.65 | 9.19 | 22.7″ | 267° | 2016 |
| AC | 3.68 | 11.75 | 107.4″ | 232° | 2015 |
Notes
- T: Matching parallax and similar proper motion indicate a physical pair.
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for 23 UMa
23 UMa Passage Through Night
Double-click to unlock the map.
Current position of 23 UMa
| Time | 20:28 |
| Latitude | 39.9612 |
| Longitude | -82.9988 |
| Elevation | 38° |
| Azimuth | 35° |
Here you can see the current position of 23 UMa 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 23 UMa Visible Throughout the Year?
23 UMa will remain visible until July 18, when it moves too close to the Sun and temporarily disappears from the night sky.
| Date | Sat, 7 November 2026 |
| Astronomical observing session begins | 13:52 |
| Astronomical observing session ends | 00:29 |
| Astronomical observing duration | 11h 37m |
| Rise | 09315+6304 is always up |
| Set | 09315+6304 is always up |
| Elevation at transit | 67° |
| Transit time | 01:56 |
| Equatorial coordinates | RA: 09h 31m 31s", Dec: 63° 03' 42s |
| Magnitude | 4 |
| Constellation | Ursa Major |
The graph illustrates the annual visibility pattern of 23 UMa, 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 23 UMa is visible throughout the year in a table with exact rise, transit, and set times for each date.
You can also see when 23 UMa is visible throughout the year in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of 23 UMa
Coordinates and Visibility
| Right Ascension | 09h 31m 32s |
| Declination | 63° 03′ 43″ |
| Magnitude | 3.65 |
| Constellation | Ursa Major |
| Elevation | 37.8° |
| Azimuth | 34.7° |