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Catalog / GJ 551 / alpha Centauri B

alpha Centauri B

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alpha Centauri B

GJ 559 B · GJ 551 · LHS 51
Distance
1.338 pc · 4.36 ly
Spectral type
K0 V (RECONS)
Teff
5280 K (spectral type (Pecaut & Mamajek 2013))
Magnitudes
V 1.34 · G unknown · BP−RP unknown
Parallax
747.230 mas ± 1.170 (RECONS)
Gaia source_id
— (not in Gaia DR3 subset)
RECONS name
GJ 559 B
RECONS

Identity & provenance

Stable ID
recons:gj-559:b
Primary name
alpha Centauri B · RECONS common name
Common name
alpha Centauri B
RECONS name
GJ 559 B
RECONS system
GJ 551 (rank #1)
Component
B
LHS
51
Gaia source_id
—
Gaia designation
—
Source catalogs
RECONS
Cross-match
recons_only
Match note
—

Position

RA
219.86341 ° · recons propagated
Dec
-60.83299 ° · recons propagated
Reference epoch
J2016
Galactic l, b
315.71734 °, -0.67112 °
XYZ (equatorial)
-0.501, -0.418, -1.169 pc
Proper motion
-3600.45, 951.28 mas/yr · RECONS
Radial velocity
unknown

Distance

Distance
1.338 pc · 4.36 ly · inverse parallax
Parallax (adopted)
747.2300 mas ± 1.1700 · RECONS
Parallax (RECONS)
747.23 mas
Parallax (Gaia DR3)
unknown
RECONS vs Gaia
—

Photometry & astrophysics

Spectral type
K0 V · RECONS
V
1.34
M_V (RECONS)
5.71
G / BP / RP
unknown / unknown / unknown
BP − RP
unknown
Teff (GSP-Phot)
unknown
log g / [M/H]
unknown / unknown
Mass
0.920 M☉
RUWE
unknown
Non-single star
—
Variability flag
—
Planets
0

Render parameters (star_params)

Teff
5280 K · spectral type (Pecaut & Mamajek 2013)
Absolute mag
5.710 (V)
Bolometric corr.
-0.200
Luminosity
0.4922 L☉
Radius
0.8384 R☉ · RECONS M_V + BC_V (Flower 1996 / Torres 2010)
Disk radius
0.6093
Limb darkening u1, u2
0.4860, 0.2318
Granulation amp / freq
0.0614 / 14.230
Variability
none
Seed
3040793572

Notes: orbit 18"