star-search
Catalog / GJ 191 / Kapteyn's Star

Kapteyn's Star

Loading renderer…

Live GPU rendering of star.frag with the parameters below. Not to scale; disk size encodes radius.

Kapteyn's Star offline portrait

Offline CPU portrait from the star-search CLI (bit-matched model). Show in 3D map →

Kapteyn's Star portrait

Kapteyn's Star

GJ 191 · LHS 29 · recons:gj-191 · Gaia DR3 4810594479418041856
Distance
3.934 pc · 12.83 ly
Spectral type
M2.0 VI (RECONS)
Teff
3452 K (Gaia GSP-Phot)
Magnitudes
V 8.85 · G 8.064 · BP−RP 2.027
Parallax
254.199 mas ± 0.017 (Gaia DR3)
Gaia source_id
4810594479418041856
RECONS name
GJ 191
RECONSGaia DR3

Identity & provenance

Stable ID
gaia-dr3:4810594479418041856
Primary name
Kapteyn's Star · RECONS common name
Common name
Kapteyn's Star
RECONS name
GJ 191
RECONS system
GJ 191 (rank #25)
Component
—
LHS
29
Gaia source_id
4810594479418041856
Gaia designation
Gaia DR3 4810594479418041856
Source catalogs
RECONS+Gaia DR3
Cross-match
matched (0.30″, 1 candidates)
Match note
—

Position

RA
77.95994 ° · Gaia DR3
Dec
-45.04381 ° · Gaia DR3
Reference epoch
J2016
Galactic l, b
250.56551 °, -35.97508 °
XYZ (equatorial)
0.580, 2.718, -2.784 pc
Proper motion
6491.22, -5708.61 mas/yr · Gaia DR3
Radial velocity
245.05 km/s

Distance

Distance
3.934 pc · 12.83 ly · inverse parallax
Parallax (adopted)
254.1986 mas ± 0.0168 · Gaia DR3
Parallax (RECONS)
255.67 mas
Parallax (Gaia DR3)
254.1986 mas
RECONS vs Gaia
0.58 %

Photometry & astrophysics

Spectral type
M2.0 VI · RECONS
V
8.85
M_V (RECONS)
10.89
G / BP / RP
8.064 / 9.086 / 7.060
BP − RP
2.027
Teff (GSP-Phot)
3452 K
log g / [M/H]
4.41 / -1.52
Mass
0.390 M☉
RUWE
1.17
Non-single star
0
Variability flag
NOT_AVAILABLE
Planets
0

Render parameters (star_params)

Teff
3452 K · Gaia GSP-Phot
Absolute mag
10.089 (G)
Bolometric corr.
-0.919
Luminosity
0.01689 L☉
Radius
0.3634 R☉ · Gaia G + parallax + BC_G (Andrae 2018)
Disk radius
0.5585
Limb darkening u1, u2
0.5636, 0.2364
Granulation amp / freq
0.0679 / 15.319
Variability
none
Seed
374138801