HJ 3945 Position and Visibility Tonight
Where is HJ 3945 right now?
HJ 3945 is located in the constellation Canis Major. It is currently above the horizon at an altitude of 15° toward the south-east, with an apparent magnitude of 5.00.
HJ 3945 visibility on 2026-10-26
HJ 3945 Visible from early morning until sunrise
HJ 3945 rise and set timetable
| Time | Elevation | |
Moonrise, 99.8% illuminated  | 18:54 | -65° |
| Astronomical observing session begins | 20:01 | -54° |
| HJ 3945 rise | 00:03 | |
| Astronomical observing session ends | 05:36 | 65° |
| HJ 3945 transit | 06:00 | 65° |
| Twilight end (−12°) | 06:00 | 65° |
| Civil sunrise | 06:25 | 65° |
| Sunrise | 06:47 | 63° |
| Moonset | 07:26 | 58° |
| HJ 3945 set | 11:56 |
Track HJ 3945 position throughout the night
← 26 October 2026 →
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Shift the map to change the time and observe HJ 3945 changing position in the night sky.
Star system description: HJ 3945
A double or multiple star system in Canis Major.
Pair AB has a measured separation of 26.5″; 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: HJ 3945
| Property | Value |
|---|---|
| System identifier | WDS 07166-2319 |
| Bayer / Flamsteed designation | |
| Constellation | Canis Major |
| System type | multiple star system |
| Right ascension (RA) | 07h 16m 36s" |
| Declination (Dec) | -23° 18' 56s |
| Component | AB |
| Primary magnitude | 5.00 |
| Secondary magnitude | 5.84 |
| Separation (arcseconds) | 26.5″ |
| Position angle | 50° |
| Discovery year | 1837 |
| Last observed | 2020 |
| Spectral type (primary/secondary) | K3Ib+dF0 |
| Number of observations | 48 |
4 components are identified in WDS; this is not a count of resolved stars.
Components of HJ 3945
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 | 5.00 | 5.84 | 26.5″ | 50° | 2020 |
| BC | 5.84 | 6.76 | — | — | 2016 |
| BD | 5.84 | 15.00 | — | — | 2016 |
Notes
- Y: Different parallaxes indicate a non-physical pair.
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for HJ 3945
HJ 3945 Passage Through Night
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Current position of HJ 3945
| Time | 01:09 |
| Latitude | 1.35208 |
| Longitude | 103.82 |
| Elevation | 15° |
| Azimuth | 115° |
Here you can see the current position of HJ 3945 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 HJ 3945 Visible Throughout the Year?
HJ 3945 will remain visible until May 26, when it moves too close to the Sun and temporarily disappears from the night sky.
| Date | Tue, 27 October 2026 |
| Astronomical observing session begins | 19:55 |
| Astronomical observing session ends | 05:28 |
| Astronomical observing duration | 10h 33m |
| Rise | 23:59 |
| Set | 11:52 |
| Elevation at transit | 65° |
| Transit time | 05:56 |
| Equatorial coordinates | RA: 07h 16m 36s", Dec: -23° 18' 56s |
| Magnitude | 5 |
| Constellation | Canis Major |
The graph illustrates the annual visibility pattern of HJ 3945, 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 HJ 3945 is visible throughout the year in a table with exact rise, transit, and set times for each date.
You can also see when HJ 3945 is visible throughout the year in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of HJ 3945
Coordinates and Visibility
| Right Ascension | 07h 16m 37s |
| Declination | -23° 18′ 56″ |
| Magnitude | 5 |
| Constellation | Canis Major |
| Elevation | 15.1° |
| Azimuth | 114.6° |