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UCAC4 557-039554
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Star UCAC4 557-039554

Red dwarf UCAC4 557-039554 is located 79 light years away from the Sun. It is a single star, that has typically about 25 % of solar mass. For now, there are no known exoplanets in this star system.
Sun distance
79 light years
galaxy map

UCAC4 557-039554

Red dwarf, High proper motion star

Location +

Ascension iconRight ascension: 7h 21m 51.233s
Declination iconDeclination: 21° 14' 52.098'' (northern hemisphere)
Parallax iconParallax: 41.463
Distance iconSun distance: 78.662 ly | 24.1 pc
Star position
The position of a star tells us where it appears in the sky, similar to how we use coordinates like latitude and longitude on Earth. In astronomy, the three main coordinates are right ascension, declination and distance. .. icon More about Star position in StellarGuide

Basic characteristic

icon weight
Mass: 20 % M Sun
| 199 M Jupiter
 (estimate)
+
Star mass
The mass of the star UCAC4 557-039554 is unknown. Based on its other characteristics, it is estimated to be about 20 % of the Sun’s mass.

The mass of a star is the total amount of matter it contains. It is one of the most important properties of a star, as it determines almost everything about how the star lives, changes, and dies. In astronomy, star mass is usually measured in solar masses (M☉) — where 1 solar mass is equal to the mass of our Sun... icon More about Star mass in StellarGuide
radius icon
Size: 20 % R Sun
| 2.4 R Jupiter
(estimate)
+
Star size
Radius of the star UCAC4 557-039554 is not known. Its estimated value based on other similar stars is about 20 % solar radii.

The size of a star refers to its radius — the distance from its center to its surface. Star size is usually measured in solar radii (R☉), where 1 solar radius equals approximately 696,000 kilometers. Depending on their type and life stage, stars can be much smaller or larger than the Sun... icon More about Star size in StellarGuide

Photometry

Magnitude iconApparent magnitude (V): 15.2
Magnitude iconAbsolute magnitude (V): 13.3
Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).
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
More about UCAC4 557-039554
       UCAC4 557-039554 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
Gaia EDR3 3363902571884367232
External sources
simbad icon
Simbad database (UCAC4 557-039554)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 3363902571884367232)
Archive from the Gaia mission
Class of stars Red dwarf
Red dwarfs are small, relatively cool, reddish stars. They are by far the most common type of star in the solar neighborhood. Their mass typically ranges from about 8% to 50% of the Sun's mass.
Closest stars

 UPM J0724+1838
 - 3.8 ly

PM J07080+2233
 - 5.9 ly

2MASS J07370638+2313282
 - 5.9 ly

LSR J0702+2154
 - 6.6 ly

LP 365-24
 - 7.2 ly
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