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Stellar Catalog
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Nearby stars catalogue
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Ross 47
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Star Ross 47

Red dwarf Ross 47 is located 19 light years away from the Sun. It is a single flare star of spectral class M4 V, that has 35 % of solar mass. For now, there are no known exoplanets in this star system.
Sun distance
19 light years

Ross 47

Red dwarf, flare star, BY Draconis variable
Spectral class: M4 V

Location

Ascension iconRight ascension: 5h 42m 11.452s
Declination iconDeclination: 12° 28' 56.496'' (equatorial region)
Parallax iconParallax: 172.676
Distance iconSun distance: 18.888 ly | 5.8 pc

Basic characteristic

icon weight
Mass: 35 % M Sun | 367 M Jupiter
radius icon
Size: 17 % R Sun | 1.7 R Jupiter
temperature iconTemperature: 3311 K | 0.57 T Sun
luminosity iconLuminosity: 0.00069 L Sun

Photometry

Magnitude iconApparent magnitude (V): 11.5
Magnitude iconAbsolute magnitude (V): 12.7
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).

Ross 47 system structure

Ross 47
More about Ross 47
Nearby star Ross 47 is a main sequence star that fuses hydrogen atoms into helium. It is approximately 20 % of the size of Sun and temperature on its surface is around 3311 K (3038 °C), which is about 57 % of Sun's temperature.
      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. Ross 47 can be found in northern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope. 
Ross 47 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
Gliese 213, V1352 Ori, HIP 26857, Ci 20 344, G 102-22, LFT 425, LHS 31, LTT 11704, NLTT 15489, Ross 47, TYC 722-455-1, 2MASS J05420897+1229252, Gaia EDR3 3340477717172813568
External sources
simbad icon
Simbad database (Ross 47)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 3340477717172813568)
Archive from the Gaia mission
Class of stars Red dwarf
Red dwarfs are small reddish stars, that are by far the most common type of star in solar neighborhood. Their mass is usually between 10 and 50 % of solar mass.
Closest stars

WISE J0521+1025
- 3.1 ly

Gliese 3379
0.23 M☉ 3.9 ly

Gliese 205
0.56 M☉ 5.4 ly

Gliese 223.2
0.45 M☉ 6.2 ly

Gaia EDR3 3426333598021539840
- 6.9 ly
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