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33 G. Librae
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Star 33 G. Librae

Multiple star system 33 G. Librae is located 19 light years away from the Sun. It is a system with 4 stars. For now, there are no known exoplanets in this star system.
Sun distance
19 light years
galaxy map

33 G. Librae A

Orange star, BY Draconis variable
Spectral class: K4 V

Location

Ascension iconRight ascension: 14h 57m 29.187s
Declination iconDeclination: -21° 25' 23.305'' (southern hemisphere)
Parallax iconParallax: 169.884
Distance iconSun distance: 19.199 ly | 5.9 pc

Basic characteristic

icon weight
Mass: 80.2 % M Sun | 840 M Jupiter
radius icon
Size: 74 % R Sun | 7.4 R Jupiter
temperature iconTemperature: 4625 K | 0.8 T Sun
luminosity iconLuminosity: 0.16 L Sun

Photometry

Magnitude iconApparent magnitude (V): 5.7
Magnitude iconAbsolute magnitude (V): 6.9
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).

33 G. Librae B

Red dwarf, Spectroscopic binary
Spectral class: M1 V

Basic characteristic

icon weight
Mass: 55 % M Sun | 576 M Jupiter
radius icon
Size: 65 % R Sun | 6.5 R Jupiter
temperature iconTemperature: 4077 K | 0.71 T Sun
luminosity iconLuminosity: 0.02 L Sun

Photometry

Magnitude iconApparent magnitude (V): 8.1
Magnitude iconAbsolute magnitude (V): 9.2
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).

33 G. Librae C

Red dwarf, , Spectroscopic binary
Spectral class: M3 V

Basic characteristic

icon weight
Mass: 35 % M Sun | 367 M Jupiter
radius icon
Size: 40 % R Sun | 4 R Jupiter (estimate)
luminosity iconLuminosity: 0.003 L Sun

33 G. Librae D

Brown dwarf, , , Spectroscopic binary
Spectral class: T8 C

Basic characteristic

icon weight
Mass: 5 % M Sun | 52 M Jupiter
radius icon
Size: 10 % R Sun | 1.1 R Jupiter (estimate)
temperature iconTemperature: 500 K | 0.09 T Sun

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).

33 G. Librae system structure

33 G. Librae A
33 G. Librae B
33 G. Librae C
33 G. Librae D
More about 33 G. Librae
      a BY Draconis variable. Stars from this category exhibit periodic variations in their luminosity. The variability is caused by a rotation which shows and hides starspots on the surface. 33 G. Librae 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. 

      33 G. Librae is a BY Draconis variable. Stars from this category exhibit periodic variations in their luminosity. The variability is caused by a rotation which shows and hides starspots on the surface.
Other designations of this star
GJ 570 D, 2MASS J14571496-2121477, HD 131976, HN 28B, DENIS J145726.4-212439, GJ 570 B, HIC 73182, HIP 73182, JP11 2550, LFT 1160, LHS 386, LPM 550, LTT 5948, 2MASS J14572643-2124384, NLTT 38871, Bleonas star, Gliese 570, Lalande 27173, HR 5568, LAL 27173, HD 131977 / 131976, BD -20°4125, LHS 387, LTT 5949, GCTP 3375.00, SAO 183040, FK5 1391, LFT 1161, LPM 551, Vys 726, ADS 9446, HIP 73184, Gaia EDR3 6232511606838403968
External sources
icon study
Closeby Habitable Exoplanet Survey (CHES). II. An Observation Strategy for the Target Stars
Scientific study, Accepted: 12. 08. 2024
simbad icon
Simbad database (GJ 570 D)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 6305165514134625024)
Archive from the Gaia mission
Closest stars

 WISE 1541-2250
 0.01 M☉ 3.5 ly

Gliese 555
 0.29 M☉ 3.8 ly

Gliese 3877
 0.08 M☉ 4.5 ly

Gliese 581
 0.31 M☉ 5.2 ly

2MASS J1507-1627
 0.07 M☉ 5.3 ly
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