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HD 63433
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Star HD 63433

Subgiant HD 63433 is located 73 light years away from the Sun. It is a single star of spectral class G5IV E, that has 99 % of solar mass. There are multiple known exoplanets in this system.
Sun distance
73 light years

HD 63433

Subgiant, BY Draconis variable
Spectral class: G5IV E

Location

Ascension iconRight ascension: 7h 49m 55.057s
Declination iconDeclination: 27° 21' 47.278'' (northern hemisphere)
Parallax iconParallax: 44.685
Distance iconSun distance: 72.99 ly | 22.4 pc

Basic characteristic

icon weight
Mass: 99 % M Sun | 1037 M Jupiter
radius icon
Size: 91 % R Sun | 9.1 R Jupiter
temperature iconTemperature: 5634 K | 0.98 T Sun
time iconAge: 1.5 billions years | 0.33 Sun
luminosity iconLuminosity: 0.75 L Sun

Photometry

Magnitude iconApparent magnitude (V): 6.9
Magnitude iconAbsolute magnitude (V): 5.2
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).

HD 63433 system structure

HD 63433
HD 63433 d 0.05 AU 1.1 R 4.2 days
HD 63433 b 0.07 AU 5.3 M 2.2 R 7.1 days
HD 63433 c 0.15 AU 7.3 M 2.6 R 20.5 days
More about HD 63433
Nearby star HD 63433 is approximately 90 % of the size of Sun and temperature on its surface is around 5634 K (5361 °C), which is about 98 % 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. HD 63433 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. 
HD 63433 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
BD+27 1490, GSC 01933-00747, HIC 38228, HIP 38228, 2MASS J07495506+2721473, SAO 79729, TIC 130181866, TYC 1933-747-1, TOI-1726, V* V377 Gem, Gaia EDR3 875071278432954240
External sources
simbad icon
Simbad database (HD 63433)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 875071278432954240)
Archive from the Gaia mission
tess icon
TESS database (TOI 1726.01)
Archive from the TESS mission
Class of stars Subgiant
part of star image
part of star image
A subgiant is a term used to describe a luminous star that is typically running out of hydrogen for nuclear fusion and is thus departing from the main sequence. These stars are classified as Yerkes luminosity class IV.
Closest stars

HD 63991
- 2.7 ly

LSPM J0801+2342
- 6.1 ly

HD 68017
- 9 ly

BD+31 1781
- 9.1 ly

G 90-52
- 9.2 ly
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