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Tau Ceti
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Star Tau Ceti

Yellow star Tau Ceti is located 12 light years away from the Sun. It is a single star of spectral class G8 V, that has 69 % of solar mass. There are multiple known exoplanets in this system.
Sun distance
12 light years
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Tau Ceti

Yellow star (spectral class G8 V)

Location

Ascension iconRight ascension: 1h 44m 2.174s
Declination iconDeclination: -15° 56' 1.249'' (equatorial region)
Parallax iconParallax: 273.81
Distance iconSun distance: 11.912 ly | 3.7 pc

Basic characteristic

icon weight
Mass: 69 % M Sun | 723 M Jupiter
radius icon
Size: 79 % R Sun | 7.9 R Jupiter
temperature iconTemperature: 5320 K | 0.92 T Sun
time iconAge: 10 billions years | 2.17 Sun
luminosity iconLuminosity: 0.45 L Sun

5 exoplanets

 Tau Ceti g 0.13 AU 1.8 M⊕ 20 days
Tau Ceti h 0.24 AU 1.8 M⊕ 49.4 days
Tau Ceti e 0.54 AU 3.9 M⊕ 162.8 days
Tau Ceti f 1.33 AU 3.9 M⊕ 636.1 days
Tau Ceti asteroid belt 10 AU -

Photometry

Magnitude iconApparent magnitude (V): 3.5
Magnitude iconAbsolute magnitude (V): 5.7
5
10
15
20
25
30
35
K
2.1
H
1.6
J
1.2
Grp
0.8
I
0.8
G
0.6
V
0.5
Gbp
0.5
B
0.4
U
0.3
Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).
More about Tau Ceti
Nearby star Tau Ceti is a main sequence star that fuses hydrogen atoms into helium. It is approximately 80 % of the size of Sun and temperature on its surface is around 5320 K (5047 °C), which is about 92 % of Sun's temperature.
      Tau Ceti can be found in southern celestial hemisphere, and it is possible to see it with naked eye. The star is also observable from Northern America, Europe and Asia.
Other designations of this star
Gliese 71, GJ 71, 52 Cet, BD−16° 295, FK5 59, HD 10700, HIP 8102, HIC 8102, HR 509, SAO 147986, LFT 159, LHS 146, LTT 935, * tau Cet, τ Ceti, Gaia EDR3 2452378776434477184
External sources
icon study
Refining the Stellar Parameters of τ Ceti: a Pole-on Solar Analog
Scientific study, Accepted: 19. 07. 2023
simbad icon
Simbad database (* tau Cet)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 2452378776434477184)
Archive from the Gaia mission
Closest stars

 YZ Ceti
 0.13 M☉ 1.6 ly

Luyten 726-8
 0.1 M☉ 3.1 ly

Epsilon Eridani
 0.82 M☉ 5.5 ly

Van Maanens star
 0.68 M☉ 6.1 ly

Gliese 1005
 0.18 M☉ 6.7 ly
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