00318+5431 Position and Visibility Tonight
Where is 00318+5431 right now?
00318+5431 is located in the constellation Cassiopeia. It is currently above the horizon at an altitude of 61° toward the north-west, with an apparent magnitude of 5.33.
Twilight begins at 18:54 local time. At that moment, 00318+5431 will be 24° above the horizon toward the north-east.
Twilight begins at 18:54 local time. At that moment, 00318+5431 will be 24° above the horizon toward the north-east.
00318+5431 visibility on 2026-08-21
00318+5431 Visible from sunset until sunrise
00318+5431 rise and set timetable
| Time | Elevation | |
| 00318+5431 is always above the horizon | ||
Moonrise, 49% illuminated  | 12:56 | 2° |
| Sunset | 17:51 | 16° |
| Civil sunset | 18:20 | 20° |
| Twilight start | 18:53 | 23° |
| Astronomical observing session begins | 19:27 | 28° |
| 00318+5431 is always above the horizon | ||
| Moonset | 22:12 | 51° |
| 00318+5431 transit | 01:40 | 73° |
| Astronomical observing session ends | 02:54 | 69° |
| Twilight end | 03:29 | 65° |
| Civil sunrise | 04:01 | 60° |
| Sunrise | 04:30 | 56° |
Track 00318+5431 Position Throughout the Night
← 21 August 2026 →
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Shift the map to change the time and observe 00318+5431 changing position in the night sky.
Star system description: 00318+5431
System 00318+5431 — double star system, is located in the constellation Cassiopeia, at coordinates RA: 00h 31m 46s", Dec: 54° 31' 20s.
The primary and secondary magnitudes are 5.33 and 5.62. Their separation is 0.3 arcseconds, at position angle 122°. The magnitude difference is 0.29 magnitudes; the primary is approximately 1.3 times brighter.
Both components are blue-white.
The following technical data come from the Washington Double Star Catalog.
The primary and secondary magnitudes are 5.33 and 5.62. Their separation is 0.3 arcseconds, at position angle 122°. The magnitude difference is 0.29 magnitudes; the primary is approximately 1.3 times brighter.
Both components are blue-white.
The following technical data come from the Washington Double Star Catalog.
Technical details: 00318+5431
| Property | Value |
|---|---|
| System identifier | 00318+5431 |
| System type | double star system |
| Primary star | lam Cas |
| Right ascension (RA) | 0.52953 (00h 31m 46s") |
| Declination (Dec) | 54.52231 (54° 31' 20s) |
| Primary magnitude | 5.33 |
| Secondary magnitude | 5.62 |
| Spectral type (primary/secondary) | B8V+B9V (blue-white/blue-white) |
| Separation (arcseconds) | 0.3 |
| Position angle | 122° |
| Discovery year | 1845 |
| Last observed | 2020 |
| Primary proper motion (RA, Dec) | +041-015 |
| Secondary proper motion (RA, Dec) | |
| Number of observations | 276 |
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for lam Cas
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| Object name | lam Cas |
| Field of view | |
| Limiting magnitude | |
| lam Cas coordinates | 0.52953, 54.52231 |
| Center coordinates | 0.52953, 54.52231 |
00318+5431 Passage Through Night
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Current position of 00318+5431
| Time | 04:02 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | 61° |
| Azimuth | 317° |
Here you can see the current position of 00318+5431 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 00318+5431
00318+5431 will remain visible until March 15, when it moves too close to the Sun and temporarily disappears from the night sky.
| Date | Fri, 21 August 2026 |
| Twilight start | 19:23 |
| Twilight end | 02:48 |
| Twilight duration | 7h 25m |
| Rise | 00318+5431 is always up |
| Set | 00318+5431 is always up |
| Elevation at transit | 73° |
| Transit time | 01:40 |
| Equatorial coordinates | RA: 00h 31m 46s", Dec: 54° 31' 20s |
| Magnitude | 5 |
| Constellation | Cassiopeia |
The graph illustrates the annual visibility pattern of 00318+5431, 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 00318+5431
Coordinates and Visibility
| Right Ascension | 0.52953° |
| Declination | 54.52231° |
| Magnitude | 5.33 |
| Constellation | Cassiopeia |
| Elevation | 60.8° |
| Azimuth | 317.3° |