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Upsilon Andromedae
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Star Upsilon Andromedae

Binary star Upsilon Andromedae is located 44 light years away from the Sun. It consists of a yellow-white star and a red dwarf. There are multiple known exoplanets in this system.
Sun distance
44 light years
galaxy map

Upsilon Andromedae A

Yellow-White star (spectral class F9V)

Location

Ascension iconRight ascension: 1h 36m 47.605s
Declination iconDeclination: 41° 24' 13.542'' (northern hemisphere)
Parallax iconParallax: 74.194
Distance iconSun distance: 43.96 ly | 13.5 pc

Basic characteristic

icon weight
Mass: 127 % M Sun | 1330 M Jupiter
radius icon
Size: 148 % R Sun | 14.7 R Jupiter
temperature iconTemperature: 6269 K | 1.08 T Sun
time iconAge: 3.12 billions years | 0.68 Sun
luminosity iconLuminosity: 3.57 L Sun

4 exoplanets

 Upsilon Andromedae A b 0.06 AU 540.4 M⊕ 14.6 R⊕ -
Upsilon Andromedae A c 0.83 AU 4444.3 M⊕ -
Upsilon Andromedae A d 2.53 AU 3258.5 M⊕ -
Upsilon Andromedae A e 5.25 AU 336.7 M⊕ -

Photometry

Magnitude iconApparent magnitude (V): 4.1
Magnitude iconAbsolute magnitude (V): 3.4
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).

Upsilon Andromedae D

Red dwarf (spectral class M4.5V)

Basic characteristic

icon weight
Mass: 20 % M Sun | 210 M Jupiter
radius icon
Size: 20 % R Sun | 2.3 R Jupiter (estimate)
(No known exoplanets yet)

Photometry

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 Upsilon Andromedae
      Upsilon Andromedae can be found in northern celestial hemisphere, and it is possible to see it with naked eye. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
UCAC4 657-006214, ** LWR 1B, 2MASS J01365042+4123325, TIC 189576909, WDS J01368+4124D, WISEA J013650.24+412328.0, Titawin, 50 Andromedae, υ-Andromedæ, BD+40 332, CCDM 01367+4125, FK5 1045, GC 1948, GCTP 331.00, Gliese 61, Gl 61, HD 9826, HIC 7513, HIP 7513, HR 458, LTT 10561, SAO 37362, WDS 01368+4124A, 2MASS J01364784+4124200, Gaia DR2 348020448377061376, Gaia EDR3 348020482735930112
External sources
icon study
Computer-assisted proofs of existence of KAM tori in planetary dynamical models of υ-And b
Scientific study, Accepted: 03. 11. 2023
icon study
Secular orbital dynamics of the innermost exoplanet of the υ-Andromedæ system
Scientific study, Accepted: 18. 04. 2023
simbad icon
Simbad database (UCAC4 657-006214)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 348020242217448576)
Archive from the Gaia mission
Closest stars

 HD 10307
 1 M☉ 4.2 ly

G 172-30
 0.33 M☉ 6.3 ly

PM J02133+3648
 - 7.1 ly

PM J00580+3919
 - 7.2 ly

UPM J0151+4652
 - 7.3 ly
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