Kepler 21 A

Subgiant

Spectral class: F6 IV

Location

Right ascension: 19h 9m 26.878s

Declination: 38° 42' 50.912'' (northern hemisphere)

Parallax: 9.218

Sun distance: 353.821 ly | 108.5 pc

Basic characteristic

Mass: 140.8 % M Sun

Size: 190 % R Sun

Temperature: 6305 K | 1.09 T Sun

Age: 2.84 billions years | 0.62 Sun

Luminosity: 5.188 L Sun

Photometry

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).

Kepler 21 B

Unknown star type

Location

Distance from the primary: 87 AU

Basic characteristic

Kepler 21 system structure


Kepler 21 A
	Kepler 21 A b	0.04 AU	6.7 M⊕	1.6 R⊕	2.8 days
	Kepler 21 A c unconfirmed	17.7 AU	1176.3 M⊕		25567 days
Kepler 21 B		87 AU

More about Kepler 21

       Kepler 21 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.

Other designations of this star
HIP 94112, Kepler-21, KOI-975, KIC 3632418, TYC 3120-963-1, 2MASS J19092683+3842505, HD 179070, Gaia DR3 2099606483621385216

External sources

Utilizing Photometry from Multiple Sources to Mitigate Stellar Variability in Precise Radial Velocities: A Case Study of Kepler-21

Scientific study, Accepted: 06. 08. 2024

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Star Kepler 21

Kepler 21 A

Location

Basic characteristic

Photometry

Kepler 21 B

Location

Basic characteristic

Kepler 21 system structure