WD 1228+139

All names: Gaia EDR3 3932061014963167872, SDSS J123056.08+134230.1, Gaia DR3 3932061014963167872, LBQS 1228+1359, Gaia DR2 3932061014963167872, USNO-B1.0 1037-00201715, WD 1228+139, GALEX J123056.1+134230

Parameter Unit Gaia EDR3 Gaia DR2 Stilism Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999)
Right ascension 12 30 56.09 (0.2) 12 30 56.09 (0.3) 12 30 56.09 12 30 56.08 (0.2) 12 30 55.63
Declination 13 42 30.06 (0.1) 13 42 30.07 (0.2) 13 42 30.06 13 42 30.22 (0.1) 13 42 32.40
Spectral type DA DA DA
Effective temperature [K] 13991.0 (953)
log(g) [cgs] 7.68 (0.1)
Mass [M☉] 0.443 (0.07)
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 2.89 (0.2) 2.71 (0.3) 2.89 2.89 (0.2)
Distance [pc] 346.55 (24) 369.24 (39) 346.55 346.55 (24)
Composition
Proper motion (right ascension) [mas/yr] 4.746495772 (0.3) 5.232828348 (0.7) 4.746 (0.3)
Proper motion (declination) [mas/yr] -10.14262289 (0.2) -9.786484202 (0.4) -10.143 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.10
V magnitude
R magnitude 19.20
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 18.75 (0.03) 18.78 18.75 18.75 (0.004)
BP magnitude 18.75 (0.03) 18.72
RP magnitude 18.87 (0.03) 18.76
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.025

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.