15394+3638 Position and Visibility Tonight
Where is 15394+3638 right now?
15394+3638 is located in the constellation Corona Borealis. Although 15394+3638 is currently 80° above the horizon, it is not visible because it is daytime.
Twilight begins at 18:44 local time. At that moment, 15394+3638 will be 62° above the horizon toward the west.
Twilight begins at 18:44 local time. At that moment, 15394+3638 will be 62° above the horizon toward the west.
15394+3638 visibility on 2026-08-27
15394+3638 Visible from sunset until early morning
15394+3638 rise and set timetable
| Time | Elevation | |
| 15394+3638 transit | 16:25 | 89° |
Moonrise, 98.6% illuminated  | 17:09 | 81° |
| Sunset | 17:43 | 74° |
| Civil sunset | 18:11 | 69° |
| Twilight start | 18:44 | 62° |
| Astronomical observing session begins | 19:17 | 56° |
| 15394+3638 set | 00:42 | |
| Astronomical observing session ends | 03:01 | -14° |
| Moonset | 04:01 | -16° |
| 15394+3638 rise | 08:05 |
Track 15394+3638 Position Throughout the Night
← 27 August 2026 →
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Star system description: 15394+3638
System 15394+3638 — double star system, is located in the constellation Corona Borealis, at coordinates RA: 15h 39m 22s", Dec: 36° 38' 08s.
The primary and secondary magnitudes are 4.96 and 5.91. Their separation is 5.5 arcseconds, at position angle 296°. The magnitude difference is 0.95 magnitudes; the primary is approximately 2.4 times brighter.
Both components are blue-white.
The following technical data come from the Washington Double Star Catalog.
The primary and secondary magnitudes are 4.96 and 5.91. Their separation is 5.5 arcseconds, at position angle 296°. The magnitude difference is 0.95 magnitudes; the primary is approximately 2.4 times brighter.
Both components are blue-white.
The following technical data come from the Washington Double Star Catalog.
Technical details: 15394+3638
| Property | Value |
|---|---|
| System identifier | 15394+3638 |
| System type | double star system |
| Primary star | zet 2 CrB |
| Right ascension (RA) | 15.65628 (15h 39m 22s") |
| Declination (Dec) | 36.63583 (36° 38' 08s) |
| Primary magnitude | 4.96 |
| Secondary magnitude | 5.91 |
| Spectral type (primary/secondary) | B7V+B9V (blue-white/blue-white) |
| Separation (arcseconds) | 5.5 |
| Position angle | 296° |
| Discovery year | 1779 |
| Last observed | 2021 |
| Primary proper motion (RA, Dec) | -017-004 |
| Secondary proper motion (RA, Dec) | -015-007 |
| Number of observations | 344 |
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for zet 2 CrB
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| Object name | zet 2 CrB |
| Field of view | |
| Limiting magnitude | |
| zet 2 CrB coordinates | 15.65628, 36.63583 |
| Center coordinates | 15.65628, 36.63583 |
15394+3638 Passage Through Night
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Current position of 15394+3638
| Time | 17:15 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | 80° |
| Azimuth | 270° |
Here you can see the current position of 15394+3638 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.
Annual motion of 15394+3638
15394+3638 will remain visible until November 4, when it moves too close to the Sun and temporarily disappears from the night sky.
| Date | Fri, 28 August 2026 |
| Twilight start | 19:15 |
| Twilight end | 03:00 |
| Twilight duration | 8h 45m |
| Rise | 08:05 |
| Set | 00:39 |
| Elevation at transit | 89° |
| Transit time | 16:22 |
| Equatorial coordinates | RA: 15h 39m 22s", Dec: 36° 38' 08s |
| Magnitude | 5 |
| Constellation | Corona Borealis |
The graph illustrates the annual visibility pattern of 15394+3638, 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 view detailed visibility information in a table with exact rise, transit, and set times for each date.
You can also view detailed visibility information in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of 15394+3638
Coordinates and Visibility
| Right Ascension | 15.65628° |
| Declination | 36.63583° |
| Magnitude | 4.96 |
| Constellation | Corona Borealis |
| Elevation | 80.1° |
| Azimuth | 269.6° |