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Groombridge 34
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Star Groombridge 34

Binary star Groombridge 34 is located 12 light years away from the Sun. It consists of 2 red dwarf stars. There are multiple known exoplanets in this system.
Sun distance
12 light years
galaxy map

Groombridge 34 A

Red dwarf (spectral class M2V)
flare star

Location

Ascension iconRight ascension: 0h 18m 27.179s
Declination iconDeclination: 44° 1' 29.232'' (northern hemisphere)
Parallax iconParallax: 280.707
Distance iconSun distance: 11.619 ly | 3.6 pc

Basic characteristic

icon weight
Mass: 39.8 % M Sun | 417 M Jupiter
radius icon
Size: 39 % R Sun | 3.9 R Jupiter
temperature iconTemperature: 3603 K | 0.62 T Sun
time iconAge: 3.02 billions years | 0.66 Sun
luminosity iconLuminosity: 0.022 L Sun

2 exoplanets

 Groombridge 34 A b 0.07 AU 4 M⊕ 11.4 days
Groombridge 34 A c 5.4 AU 35 M⊕ 6694 days

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).

Groombridge 34 B

Red dwarf (spectral class M4.1 V)
flare star

Basic characteristic

icon weight
Mass: 16 % M Sun | 168 M Jupiter
radius icon
Size: 18 % R Sun | 1.8 R Jupiter
temperature iconTemperature: 3318 K | 0.57 T Sun
time iconAge: 2.754 billions years | 0.6 Sun
luminosity iconLuminosity: 0.00085 L Sun
(No known exoplanets yet)

Photometry

Magnitude iconApparent magnitude (V): 11
Magnitude iconAbsolute magnitude (V): 13.3
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 Groombridge 34
      Groombridge 34 can be found in northern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
GQ Andromedae, Gliese 15 B, G 171-048, LHS 4, LTT 10109, GX Andromedae, V* GX And, BD+43° 44, GCTP 49, Gliese 15 A, GJ 15 A, Gl 15 A, G 171-047, HD 1326, HIP 1475, LHS 3, LTT 10108, SAO 36248, Gaia EDR3 385334230892516480
External sources
icon study
ATMOSPHERIX: I- An open source high resolution transmission spectroscopy pipeline for exoplanets atmospheres with SPIRou
Scientific study, Accepted: 28. 08. 2023
simbad icon
Simbad database (V* GQ And)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 385334196532776576)
Archive from the Gaia mission
News from this star system
calendar icon18. 10 2019
tag iconExoplanets

Newly confirmed exoplanet makes star Groombridge 34 one of the closest multiplanetary star systems

In October NASA published 16 new exoplanets in its Exoplanet Archive, among them also planets b and c orbiting red dwarf Groombridge 34 A (Gliese 15 A). In distance of a little more than 11 light years it is now the closest multiplanetary system to the Sun.

Read more
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