iconstars iconexoplanets iconstudies
do not follow here
Stellar Catalog
more icon
Nearby stars catalogue
more icon
TOI 5800
more icon

Star TOI 5800

Orange star TOI 5800 is located 139 light years away from the Sun. It is a single star of spectral class K3V, that has 79 % of solar mass. There is at least one exoplanet in this system.
Sun distance
139 light years
galaxy map

TOI 5800

Orange star
Spectral class: K3V

Location +

Ascension iconRight ascension: 20h 20m 15.735s
Declination iconDeclination: -7° 24' 42.952'' (equatorial region)
Parallax iconParallax: 23.394
Distance iconSun distance: 139.416 ly | 42.7 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: 79 % M Sun
| 828 M Jupiter
+
Star mass
Mass of the star TOI 5800 is 0.79 solar masses.

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: 80 % R Sun
| 8 R Jupiter
+
Star size
Radius of the star TOI 5800 is 0.80 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
temperature icon
Temperature: 4830 K | 0.84 T Sun
+
Star temperature
Surface temperature of TOI 5800 is 4830 K, which is 84 % of the temperature on the surface of the Sun.

The temperature of a star refers to the temperature at its surface, also called the photosphere. It is measured in kelvins (K), the standard unit for temperature in astronomy. A star’s temperature tells us a lot about its physical properties and where it stands in its evolutionary stage... icon More about Star temperature in StellarGuide
time icon
Age: 2.5 billions years | 0.54 Sun
+
Star age
Star TOI 5800 is 2.5 billion years old, which is about 0.54 of the Sun's age.

The age of a star tells us how long it has been shining since it formed. Knowing a star’s age helps astronomers understand its life stage, how it has changed over time, and what will happen to it in the future... icon More about Star age in StellarGuide
luminosity icon
Luminosity: 0.31 L Sun
+
Star luminosity
Luminosity is the total amount of energy a star gives off every second. Think of it as the star’s true brightness — not just how bright it looks from Earth. This is important because some stars may appear dim simply because they are far away, not because they’re actually faint... icon More about Star luminosity in StellarGuide

Photometry

Magnitude iconApparent magnitude (V): 9.5
Magnitude iconAbsolute magnitude (V): 6.4
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

TOI 5800 system structure

 TOI 5800
TOI 5800 b 0.03 AU 10.8 M⊕ 2.7 R⊕ 2.6 days
More about TOI 5800
Star TOI 5800 is a main sequence star that fuses hydrogen atoms into helium. It is approximately 80 % of the size of Sun and temperature on its surface is around 4830 K (4557 °C), which is about 84 % of Sun's temperature.
       TOI 5800 can be found in southern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is also observable from Northern America, Europe and Asia.
Other designations of this star
HD 193396, Gaia DR3 4216059714460162944
External sources
icon study
The Hot-Neptune Initiative (HONEI) I. Two hot sub-Neptunes on a close-in, eccentric orbit (TOI-5800 b) and a farther-out, circular orbit (TOI-5817 b)
Scientific study, Accepted: 15. 05. 2025
icon study
An Eccentric Sub-Neptune Moving Into the Evaporation Desert
Scientific study, Accepted: 15. 05. 2025
gaia icon
Gaia database (Gaia DR3 4216059714460162944)
Archive from the Gaia mission

exoplanet iconAbout Stellar Catalog

line
Working with real data
icon Data in Stellar Catalog come from trusted scientific sources. Primary source is Gaia space telescope mapping the stars in Milky Way. Other sources include research papers, Simbad catalog and Exoplanet.eu database.
Estimated values
icon Objects listed in the Stellar Catalog often have values that are estimates. These estimates are determined using their known characteristics, such as spectral type, brightness across different wavelengths, distance from a star, and other factors.
Fresh and validated
icon Stellar Catalog is continuously updated with new information from research papers. Stellar and planetary data are validated by automatic processes as well as humans.
Get your next news from nearby stars
Stellar Catalog brings the stars from our galaxy to you. Discover their position, physical properties and whether there are any exoplanets or disks orbiting them. The data in Stellar Catalog come from respectable sources like Gaia space telescope, or SIMBAD database.
Stellar catalog: Discover the nearby universe
Visit profile on X