Proxima Centauri

Red dwarf (spectral class M5.5 Ve)

flare star

Location

Distance from the primary: 8700 AU

Basic characteristic

Mass: 12.2 % M Sun

Size: 15.4 % R Sun | 1.5 R Jupiter

Temperature: 2883 K | 0.5 T Sun

Age: 4.85 billions years | 1.05 Sun

Luminosity: 0.00005 L Sun

3 exoplanets

Proxima Centauri d unconfirmed	0.03 AU	0.3 M⊕		5.2 days
Proxima Centauri b	0.05 AU	1.2 M⊕	1.1 R⊕	11.2 days
Proxima Centauri c	1.48 AU	7.8 M⊕		1928 days

Photometry

Apparent magnitude (V): 11.1

Absolute magnitude (V): 15.6

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).

More about Proxima Centauri

Proxima Centauri is approximately 20 % of the size of Sun and temperature on its surface is around 2883 K (2610 °C), which is about 50 % of Sun's temperature.

      Proxima Centauri can be found in southern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.

Other designations of this star
Alpha Centauri C, CCDM J14396-6050C, GCTP 3278.00, Gliese 551, HIP 70890, LFT 1110, LHS 49, LPM 526, LTT 5721, NLTT 37460, V645 Centauri, Gaia EDR3 5853498713190525696

External sources

A secondary atmosphere on the rocky exoplanet 55 Cancri e

Scientific study, Accepted: 08. 05. 2024

The Detection of a Possible Exoplanet Orbiting KIC 1718360 Using Machine Learning

Scientific study, Accepted: 07. 05. 2024

The six-planet resonant chain of HD 110067

Scientific study, Accepted: 07. 05. 2024

SCExAO/CHARIS Multi-Wavelength, High-Contrast Imaging of the BD+45∘598 Debris Disk

Scientific study, Accepted: 07. 05. 2024

Simbad database (NAME Proxima Centauri)

Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)

Gaia database (Gaia EDR3 5853498713190525696)

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.

Star Proxima Centauri

Proxima Centauri

Location

Basic characteristic

3 exoplanets

Photometry

Astronomers have discovered a brown dwarf orbiting the red giant HD 18438

Newly discovered exoplanet HD 207496 b is too close to its star and is loosing atmosphere

Two giant exoplanets discovered orbiting nearby Sun-like star HIP 104045

Astronomers used JWST and TESS telescopes to study nearby brown dwarf HD 19467 B