WD 0444-390

All names: Gaia DR2 4818044770206932864, WD 0444-390, GALEX J044550.7-385538, Gaia DR3 4818044770206932864, RX J044550.8-385539, USNO-B1.0 0510-00042922, Gaia EDR3 4818044770206932864, 1RXS J044550.1-385537, RBS 582, [BTR99] J044550.7-385538

Parameter Unit Gaia EDR3 Gaia DR2 Stilism Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999)
Right ascension 04 45 50.76 (0.04) 04 45 50.76 (0.05) 04 45 50.76 04 45 50.77 (0.04) 04 45 49.56
Declination -38 55 38.17 (0.05) -38 55 38.18 (0.07) -38 55 38.17 -38 55 38.25 (0.05) -38 55 37.56
Spectral type DA DA1.0 DA1.0
Effective temperature [K]
log(g) [cgs]
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 2.58 (0.05) 2.53 (0.07) 2.58 2.58 (0.05)
Distance [pc] 387.46 (8) 395.10 (11) 387.46 387.46 (8)
Composition
Proper motion (right ascension) [mas/yr] -5.616411345 (0.05) -5.406173077 (0.1) -5.616 (0.05)
Proper motion (declination) [mas/yr] 4.536375377 (0.07) 4.501765865 (0.2) 4.536 (0.07)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.40
V magnitude 17.50
R magnitude 17.00
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.76 (0.006) 16.79 16.76 16.76 (0.003)
BP magnitude 16.60 (0.006) 16.52
RP magnitude 17.11 (0.01) 17.10
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.008

* 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.