WD 0022+021

All names: WD 0022+021, USNO-B1.0 0924-00005214, LBQS 0022+0210, Gaia EDR3 2547736087018009216, Gaia DR3 2547736087018009216, GALEX J002517.2+022706, SDSS J002517.29+022705.3, Gaia DR2 2547736087018009216, PB 5941

Parameter Unit Gaia EDR3 Gaia DR2 Stilism Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999)
Right ascension 00 25 17.34 (0.2) 00 25 17.34 (0.2) 00 25 17.34 00 25 17.23 (0.2) 00 25 17.04
Declination 02 27 05.68 (0.1) 02 27 05.66 (0.1) 02 27 05.68 02 27 05.00 (0.1) 02 27 00.72
Spectral type DA DA DA
Effective temperature [K] 14240.0 (682)
log(g) [cgs] 8.39 (0.05)
Mass [M☉] 0.857 (0.04)
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 5.16 (0.2) 5.16 (0.2) 5.16 5.16 (0.2)
Distance [pc] 193.76 (7) 193.84 (9) 193.76 193.76 (7)
Composition
Proper motion (right ascension) [mas/yr] 106.4424372 (0.2) 106.2962283 (0.6) 106.442 (0.2)
Proper motion (declination) [mas/yr] 42.36347385 (0.1) 42.5519286 (0.3) 42.363 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.40
V magnitude
R magnitude 18.70
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 18.45 (0.01) 18.48 18.45 18.45 (0.003)
BP magnitude 18.46 (0.01) 18.41
RP magnitude 18.54 (0.03) 18.46
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.014

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit




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.