Mizar Position and Visibility Tonight
Where is Mizar right now?
Mizar visibility on 2026-11-01
Mizar rise and set timetable
| Time | Elevation | |
| Mizar transit | 10:40 | 35° |
| Mizar set | 16:40 | |
| Astronomical observing session begins | 18:58 | -19° |
Moonrise, 48.5% illuminated  | 00:12 | -32° |
| Astronomical observing session ends | 04:29 | -1° |
| Mizar rise | 04:38 | |
| Twilight end (−12°) | 04:53 | 2° |
| Civil sunrise | 05:18 | 6° |
| Sunrise | 05:41 | 9° |
| Moonset | 12:38 | 30° |
Track Mizar position throughout the night
← 1 November 2026 →
| Time | |
| Altitude | |
| Azimuth |
Star system description: Mizar
Mizar A (ζ UMa) and Alcor form the wide AC pair (715.5″). Mizar A and B form the closer AB pair (14.4″); these are distinct pairs in the same WDS system.
Pair AC (715.5″; magnitudes 2.23 and 4.01) is the naked-eye candidate in the catalog model. Seeing both stars separately depends on sky and eyesight.
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: Mizar
| Property | Value |
|---|---|
| System identifier | WDS 13239+5456 |
| Bayer / Flamsteed designation | ζ UMa |
| Constellation | Ursa Major |
| System type | multiple star system |
| Right ascension (RA) | 13h 23m 55s" |
| Declination (Dec) | 54° 55' 31s |
| Component | AB |
| Primary magnitude | 2.23 |
| Secondary magnitude | 3.88 |
| Separation (arcseconds) | 14.4″ |
| Position angle | 153° |
| Discovery year | 1755 |
| Last observed | 2022 |
| Spectral type (primary/secondary) | A1VpSrSi |
| Number of observations | 502 |
10 components are identified in WDS; this is not a count of resolved stars.
Components of Mizar
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 | 2.23 | 3.88 | 14.4″ | 153° | 2022 |
| Aa,Ab | 3.00 | 3.00 | — | — | 2004 |
| AC (naked eye) (binoculars) | 2.23 | 4.01 | 715.5″ | 73° | 2020 |
| AD | 2.23 | 7.62 | 498.1″ | 103° | 2020 |
| AE | 2.23 | 6.88 | — | — | 1999 |
| AF | 2.23 | 9.86 | — | — | 1999 |
| Ca,Cb | 4.01 | 8.00 | 1″ | 207° | 2009 |
| CE | 4.01 | 6.88 | — | — | 1999 |
| CF | 4.01 | 9.86 | — | — | 1999 |
| CG | 4.01 | 8.21 | — | — | 1999 |
| CH | 4.01 | 8.63 | — | — | 1999 |
Notes
- V: Proper motion indicates 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 Mizar
Mizar Passage Through Night
Current position of Mizar
| Time | 17:08 |
| Latitude | 0 |
| Longitude | 0 |
| Elevation | -4° |
| Azimuth | 325° |
When Is Mizar Visible Throughout the Year?
| Date | Mon, 2 November 2026 |
| Astronomical observing session begins | 18:54 |
| Astronomical observing session ends | 04:24 |
| Astronomical observing duration | 9h 29m |
| Rise | 04:38 |
| Set | 16:36 |
| Elevation at transit | 35° |
| Transit time | 10:37 |
| Equatorial coordinates | RA: 13h 23m 55s", Dec: 54° 55' 31s |
| Magnitude | 2 |
| Constellation | Ursa Major |
You can also see when Mizar is visible throughout the year in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of Mizar
Coordinates and Visibility
| Right Ascension | 13h 23m 55s |
| Declination | 54° 55′ 32″ |
| Magnitude | 2.23 |
| Constellation | Ursa Major |
| Elevation | -4.1° |
| Azimuth | 325.1° |