f Eri Position and Visibility Tonight
Where is f Eri right now?
f Eri is located in the constellation Eridanus. It is currently above the horizon at an altitude of 46° toward the south-west, with an apparent magnitude of 4.72.
f Eri visibility on 2026-10-27
f Eri Visible from before midnight until sunrise
f Eri rise and set timetable
| Time | Elevation | |
Moonrise, 98.9% illuminated  | 19:51 | -8° |
| Astronomical observing session begins | 20:01 | -6° |
| f Eri rise | 20:33 | |
| f Eri transit | 02:28 | 51° |
| Astronomical observing session ends | 05:35 | 32° |
| Twilight end (−12°) | 06:00 | 27° |
| Civil sunrise | 06:25 | 23° |
| Sunrise | 06:47 | 19° |
| f Eri set | 08:23 | |
| Moonset | 08:26 | -1° |
Track f Eri position throughout the night
← 27 October 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe f Eri changing position in the night sky.
Star system description: f Eri
A double or multiple star system in Eridanus.
Pair AB has a measured separation of 8.2″; 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: f Eri
| Property | Value |
|---|---|
| System identifier | WDS 03486-3737 |
| Bayer / Flamsteed designation | f Eri |
| Constellation | Eridanus |
| System type | multiple star system |
| Right ascension (RA) | 03h 48m 35s" |
| Declination (Dec) | -37° 37' 12s |
| Component | AB |
| Primary magnitude | 4.72 |
| Secondary magnitude | 5.25 |
| Separation (arcseconds) | 8.2″ |
| Position angle | 216° |
| Discovery year | 1826 |
| Last observed | 2020 |
| Spectral type (primary/secondary) | B9V+A1V |
| Number of observations | 89 |
3 components are identified in WDS; this is not a count of resolved stars.
Components of f Eri
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 | 4.72 | 5.25 | 8.2″ | 216° | 2020 |
| Aa,Ab | 4.80 | 9.80 | 0.1″ | 8° | 2017 |
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for f Eri
f Eri Passage Through Night
Double-click to unlock the map.
Current position of f Eri
| Time | 03:57 |
| Latitude | 1.35208 |
| Longitude | 103.82 |
| Elevation | 46° |
| Azimuth | 206° |
Here you can see the current position of f Eri 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 f Eri Visible Throughout the Year?
f Eri will remain visible until March 26, when it moves too close to the Sun and temporarily disappears from the night sky.
| Date | Wed, 28 October 2026 |
| Astronomical observing session begins | 19:55 |
| Astronomical observing session ends | 05:28 |
| Astronomical observing duration | 10h 33m |
| Rise | 20:30 |
| Set | 08:19 |
| Elevation at transit | 51° |
| Transit time | 02:24 |
| Equatorial coordinates | RA: 03h 48m 35s", Dec: -37° 37' 12s |
| Magnitude | 5 |
| Constellation | Eridanus |
The graph illustrates the annual visibility pattern of f Eri, 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 f Eri is visible throughout the year in a table with exact rise, transit, and set times for each date.
You can also see when f Eri is visible throughout the year in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of f Eri
Coordinates and Visibility
| Right Ascension | 03h 48m 36s |
| Declination | -37° 37′ 13″ |
| Magnitude | 4.72 |
| Constellation | Eridanus |
| Elevation | 45.9° |
| Azimuth | 205.5° |