NGC1840 Position and Visibility Tonight
Where is NGC1840 right now?
NGC1840 is located in the constellation Mensa. It is currently below the horizon and is not visible from your location.
NGC1840 visibility on 2026-08-17
NGC1840 is Not visible tonight
NGC1840 rise and set timetable
| Time | Elevation | |
| NGC1840 is always below the horizon | - | |
Moonrise, 13.1% illuminated  | 08:46 | -22° |
| Astronomical observing session begins | 19:34 | -55° |
| Moonset | 19:59 | -54° |
| Astronomical observing session ends | 02:50 | -26° |
| NGC1840 transit | 06:29 | -19° |
Track NGC1840 Position Throughout the Night
← 17 August 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe NGC1840 changing position in the night sky.
Finder Chart for NGC1840
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| Object name | NGC1840 |
| Field of view | |
| Limiting magnitude | |
| NGC1840 coordinates | 5.08866, -71.76289 |
| Center coordinates | 5.08866, -71.76289 |
NGC1840 Passage Through Night
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Current position of NGC1840
| Time | 02:13 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | -28° |
| Azimuth | 161° |
Here you can see the current position of NGC1840 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 NGC1840
| Date | Tue, 18 August 2026 |
| Twilight start | 19:28 |
| Twilight end | 02:44 |
| Twilight duration | 7h 17m |
| Rise | NGC1840 is always down |
| Set | NGC1840 is always down |
| Elevation at transit | -19° |
| Transit time | 06:25 |
| Equatorial coordinates | RA: 05h 05m 19s", Dec: -71° 45' 46s |
| Magnitude | - |
| Constellation | Mensa |
The graph illustrates the annual visibility pattern of NGC1840, 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 NGC1840
Coordinates and Visibility
| Right Ascension | 5.08866° |
| Declination | -71.76289° |
| Magnitude | |
| Constellation | Mensa |
| Elevation | -27.9° |
| Azimuth | 161.4° |
Data Credits
The deep-sky information on this page comes from the OpenNGC project developed by Matteo Verga. OpenNGC provides detailed catalog data for nebulae, galaxies, clusters and other deep-sky objects.
For details or contributions, visit the official repository: OpenNGC GitHub.