STF 2790 Position and Visibility Tonight
Where is STF 2790 right now?
STF 2790 is located in the constellation Cepheus. Although STF 2790 is currently 6° above the horizon, it is not visible because it is daytime.
STF 2790 visibility on 2026-10-25
STF 2790 Visible all night
STF 2790 rise and set timetable
| Time | Elevation | |
| STF 2790 is always above the horizon | ||
Moonrise, 98.1% illuminated  | 15:17 | 55° |
| Sunset | 16:17 | 62° |
| Civil sunset | 16:45 | 64° |
| Twilight start (−12°) | 17:15 | 67° |
| Astronomical observing session begins | 17:46 | 68° |
| STF 2790 is always above the horizon | ||
| STF 2790 transit | 18:12 | 69° |
| Astronomical observing session ends | 03:58 | 10° |
| Twilight end (−12°) | 04:28 | 8° |
| Moonset | 04:57 | 7° |
| Civil sunrise | 04:58 | 7° |
| Sunrise | 05:26 | 6° |
Track STF 2790 position throughout the night
← 25 October 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe STF 2790 changing position in the night sky.
Star system description: STF 2790
A double or multiple star system in Cepheus.
Pair AB has a measured separation of 4.6″; 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: STF 2790
| Property | Value |
|---|---|
| System identifier | WDS 21193+5837 |
| Bayer / Flamsteed designation | |
| Constellation | Cepheus |
| System type | multiple star system |
| Right ascension (RA) | 21h 19m 15s" |
| Declination (Dec) | 58° 37' 24s |
| Component | AB |
| Primary magnitude | 5.85 |
| Secondary magnitude | 9.27 |
| Separation (arcseconds) | 4.6″ |
| Position angle | 45° |
| Discovery year | 1831 |
| Last observed | 2015 |
| Spectral type (primary/secondary) | M1I+B2+B3 |
| Number of observations | 31 |
5 components are identified in WDS; this is not a count of resolved stars.
Components of STF 2790
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 | 5.85 | 9.27 | 4.6″ | 45° | 2015 |
| Aa,Ab | 5.90 | 7.42 | 0.1″ | 123° | 2006 |
| AC | 5.85 | 15.20 | 15.8″ | 183° | 2015 |
| AD | 5.85 | 10.07 | 74.8″ | 352° | 2015 |
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for STF 2790
STF 2790 Passage Through Night
Double-click to unlock the map.
Current position of STF 2790
| Time | 05:52 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | 6° |
| Azimuth | 357° |
Here you can see the current position of STF 2790 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 STF 2790 Visible Throughout the Year?
STF 2790 will be visible throughout the entire year. Its position changes by about 63°. Use the annual motion section to find when STF 2790 reaches its highest elevation.
| Date | Sun, 25 October 2026 |
| Astronomical observing session begins | 17:41 |
| Astronomical observing session ends | 03:51 |
| Astronomical observing duration | 10h 10m |
| Rise | 21193+5837 is always up |
| Set | 21193+5837 is always up |
| Elevation at transit | 69° |
| Transit time | 18:12 |
| Equatorial coordinates | RA: 21h 19m 15s", Dec: 58° 37' 24s |
| Magnitude | 6 |
| Constellation | Cepheus |
The graph illustrates the annual visibility pattern of STF 2790, 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 STF 2790 is visible throughout the year in a table with exact rise, transit, and set times for each date.
You can also see when STF 2790 is visible throughout the year in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of STF 2790
Coordinates and Visibility
| Right Ascension | 21h 19m 16s |
| Declination | 58° 37′ 25″ |
| Magnitude | 5.85 |
| Constellation | Cepheus |
| Elevation | 6.1° |
| Azimuth | 357.1° |