Star Gliese 3991

Binary star Gliese 3991 is located 25 light years away from the Sun. It consists of a red dwarf and a white dwarf. For now, there are no known exoplanets in this star system.

Gliese 3991 A

Red dwarf, Spectroscopic binary

Spectral class: M3.5V

Location

Right ascension: 17h 9m 32.038s

Declination: 43° 40' 48.381'' (northern hemisphere)

Parallax: 131.6

Sun distance: 24.784 ly | 7.6 pc

Basic characteristic

Mass: 20 % M Sun

Size: 10 % R Sun | 1 R Jupiter

Temperature: 3284 K | 0.57 T Sun

Age: 6 billions years | 1.3 Sun

Photometry

Apparent magnitude (V): 13.7

Absolute magnitude (V): 14.3

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).

Gliese 3991 B

White dwarf, , Spectroscopic binary

Spectral class: D12

Basic characteristic

Mass: 50 % M Sun

Age: 6 billions years | 1.3 Sun

Gliese 3991 system structure

	Gliese 3991 A
	Gliese 3991 B

More about Gliese 3991

       Gliese 3991 can be found in northern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.

Other designations of this star
G 203-47, HIP 83945, USNO 752, Gaia EDR3 1355264565043431040

Closest stars

Gliese 623	0.51 M☉	4.1 ly
Furuhjelm 46	0.32 M☉	5.3 ly
Gliese 625	0.37 M☉	6.3 ly
Gliese 694	0 M☉	7 ly
Vega	2.1 M☉	7.4 ly

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