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Sky-Tonight.com / Double stars / 03158-0849 star system
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Observation Settings

Or select it on the map:
This Earth map lets you select the observer’s location used to calculate the bearing and elevation of celestial objects. The selected point determines how the sky, rise and set times, and object positions are shown.
Your location: Santa Clara, United States
Timezone:
Latitude:
37.3541
Longitude:
-121.955

03158-0849 Position and Visibility Tonight

03158-0849

Where is 03158-0849 right now?

03158-0849 is located in the constellation Eridanus. It is currently above the horizon at an altitude of 30° toward the south-east, with an apparent magnitude of 4.82.
Twilight begins at 00:15 local time. At that moment, 03158-0849 will be 30° above the horizon toward the south-east.
Open the interactive guide to 03158-0849’s position and path tonight

03158-0849 visibility on 2026-09-11

03158-0849 Visible from before midnight until sunrise

03158-0849 rise and set timetable

TimeElevation
Moonrise, 1.7% illuminated 04:1441°
Moonset17:09-50°
Astronomical observing session begins18:51-31°
03158-0849 rise21:29
03158-0849 transit03:0144°
Astronomical observing session ends03:1744°
Twilight end (−12°)03:4942°
Civil sunrise04:2040°
Sunrise04:4838°
03158-0849 set08:33

Track 03158-0849 position throughout the night

← 11 September 2026 →

Elevation (degrees)
Time
Altitude
Azimuth
Shift the map to change the time and observe 03158-0849 changing position in the night sky.

Star system description: 03158-0849

System 03158-0849 — double star system, is located in the constellation Eridanus, at coordinates RA: 03h 15m 50s", Dec: -8° 49' 11s.
The primary and secondary magnitudes are 4.82 and 6.19. Their separation is 16.7 arcminutes, at position angle 151°. The magnitude difference is 1.37 magnitudes; the primary is approximately 3.5 times brighter.
The primary is white; the secondary is yellow-white.
The following technical data come from the Washington Double Star Catalog.

Technical details: 03158-0849

Property Value
System identifier 03158-0849
System type double star system
Primary star zet Eri
Right ascension (RA) 3.26389 (03h 15m 50s")
Declination (Dec) -8.81983 (-8° 49' 11s)
Primary magnitude 4.82
Secondary magnitude 6.19
Spectral type (primary/secondary) A4+F7V (white/yellow-white)
Separation (arcseconds) 999.9
Position angle 151°
Discovery year 1991
Last observed 1999
Primary proper motion (RA, Dec) +000+046
Secondary proper motion (RA, Dec) +007+027
Number of observations 4

Notes

  • V: Proper motion indicates a physical pair.
  • Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.

    Finder Chart for 03158-0849

    Double-click to unlock the map.
    Object name03158-0849
    Field of view
    Limiting magnitude
    03158-0849 coordinates3.26389, -8.81983
    Center coordinates3.26389, -8.81983

    03158-0849 Passage Through Night

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    Current position of 03158-0849

    Time00:15
    Latitude37.3541
    Longitude-121.955
    Elevation30°
    Azimuth131°
    Here you can see the current position of 03158-0849 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 03158-0849 Visible Throughout the Year?


    03158-0849 will remain visible until March 9, when it moves too close to the Sun and temporarily disappears from the night sky.
    Time
    DateSat, 12 September 2026
    Astronomical observing session begins18:45
    Astronomical observing session ends03:12
    Astronomical observing duration8h 26m
    Rise21:25
    Set08:29
    Elevation at transit44°
    Transit time02:57
    Equatorial coordinatesRA: 03h 15m 50s", Dec: -8° 49' 11s
    Magnitude5
    ConstellationEridanus
    The graph illustrates the annual visibility pattern of 03158-0849, 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 03158-0849 is visible throughout the year in a table with exact rise, transit, and set times for each date.

    Astrometric and Physical Parameters of 03158-0849

    Coordinates and Visibility

    Right Ascension03h 15m 50s
    Declination-8° 49′ 11″
    Magnitude4.82
    ConstellationEridanus
    Elevation29.7°
    Azimuth131.1°