θ2 Eridani (theta2 Eridani)

θ2 Eridani is a variable and double main-sequence star in the constellation of Eridanus.

θ2 Eridani visual magnitude is 4.35. Because of its moderate brightness, θ2 Eridani should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about θ2 Eridani:

Color of θ2 Eridani ⬤

Magnitude of θ2 Eridani 4.35

Class Main-sequence

VISIBILITY RIGHT NOW θ2 Eridani (theta2 Eridani) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of θ2 Eridani

θ2 Eridani is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of θ2 Eridani are provided in the following table:

Right Ascension J2000 02h 58m 16s

Declination J2000 -40° 18’ 15”

Galactic Longitude 247.85°

Galactic Latitude -60.73°

Constellation Eridanus

The simplified sky map below shows the position of θ2 Eridani in the sky:

Finder chart θ2 Eridani (theta2 Eridani) star

Simplified finder chart for θ2 Eridani (theta2 Eridani).

Visibility of θ2 Eridani from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

θ2 Eridani (theta2 Eridani) is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of θ2 Eridani

The image below is a photograph of θ2 Eridani from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of θ2 Eridani is -0.064 arcsec per year in Right Ascension and 0.018 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of θ2 Eridani (theta2 Eridani) star

DSS2 image of θ2 Eridani. The red arrow shows the motion of θ2 Eridani during the next 10000 years (-10.67 arcmin in Right Ascension and 3.00 arcmin in declination);

Spectral properties of θ2 Eridani

θ2 Eridani belongs to spectral class A1 and has a luminosity class of V corresponding to a main-sequence star.

Spectral Type A1V

Color Index (B-V) 0.08

Temperature of θ2 Eridani 9226K

θ2 Eridani star system properties

θ2 Eridani is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the θ2 Eridani double sysyem:

Main star magnitude 4.35

Secondary star magnitude 5.45

Magnitude difference 1.1

Separation 8.3 arcsec

Alternative designations of θ2 Eridani

Bayer designation θ2 Eridani
(theta2 Eridani)

Henry Draper Catalogue HD18623

SAO Catalogue SAO216114

Durchmusterung Catalogue CD-40 771

General Catalogue of Variable Stars 1002

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