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Gliese 257
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Star Gliese 257

Binary star Gliese 257 is located 26 light years away from the Sun. It consists of 2 red dwarf stars. For now, there are no known exoplanets in this star system.
Sun distance
26 light years
galaxy map

Gliese 257 A

Red dwarf, High proper motion star
Spectral class: M3.5 V

Location

Ascension iconRight ascension: 6h 57m 44.966s
Declination iconDeclination: -44° 17' 29.026'' (southern hemisphere)
Parallax iconParallax: 124.57
Distance iconSun distance: 26.183 ly | 8 pc

Basic characteristic

icon weight
Mass: 25 % M Sun | 262 M Jupiter
radius icon
Size: 30 % R Sun | 2.8 R Jupiter (estimate)

Photometry

Magnitude iconApparent magnitude (V): 11.5
Magnitude iconAbsolute magnitude (V): 12
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).

Gliese 257 B

Red dwarf, High proper motion star
Spectral class: M3 D

Basic characteristic

icon weight
Mass: 24 % M Sun | 251 M Jupiter
radius icon
Size: 30 % R Sun | 3.4 R Jupiter (estimate)

Photometry

Magnitude iconApparent magnitude (V): 11.3
Magnitude iconAbsolute magnitude (V): 11.8
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).

Gliese 257 system structure

Gliese 257 A
Gliese 257 B
More about Gliese 257
       Gliese 257 can be found in southern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
Other designations of this star
CD-44 3045B, GJ 257 B, CSI-44 3045 23, LPM 248B, CD-44 3045, HIC 33499, HIP 33499, LHS 222, LFT 502, LTT 2699, NLTT 17239, LPM 248, Ci 20 407, GJ 257, Gaia DR2 5559035514779133056, Gaia EDR3 5559035514779971456
External sources
simbad icon
Simbad database (CD-44 3045B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 5559035514776717312)
Archive from the Gaia mission
Closest stars

 2MASS 0729-3954
 0.04 M☉ 3.3 ly

SCR J0740-4257
 - 3.5 ly

AP Columbae
 0.25 M☉ 7 ly

WISE J071322.55-291751.9
 - 8.4 ly

Gliese 318
 0.45 M☉ 10.9 ly
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