GD 256

All names: 01565+2955, GALEX J015630.0+295531, Gaia DR3 300940112094402176, GD 256, Gaia DR2 300940112094402176, WD 0153+296, WDJ015630.05+295532.28, Gaia EDR3 300940112094402176, 2MASS J01563005+2955325, PM J01565+2955, TIC 28296453

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Gaia DR2 Stilism Limoges et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 01 56 30.13 (0.02) 01 56 30.13 (0.04) 01 56 30.13 01 56 30.05 (0.02) 01 56 30.13 01 56 30.17
Declination 29 55 30.80 (0.02) 29 55 30.84 (0.04) 29 55 30.80 29 55 32.28 (0.02) 29 55 30.84 29 55 32.52
Spectral type DA DA DA DA
Effective temperature [K] 15270.0 (238) 15327.0 (147)
log(g) [cgs] 7.99 (0.05) 8.00 (0.008)
Mass [M] 0.61 (0.03) 0.613 (0.007)
log(Luminosity) [L] -2.08
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 21.24 (0.03) 21.28 (0.05) 21.24 21.24 (0.03) 21.28 (0.05)
Distance [pc] 47.07 (0.06) 46.99 (0.1) 49.50 (1) 47.07 47.07 (0.06) 46.99 (0.1)
Composition H
Proper motion (right ascension) [mas/yr] 60.83356145 (0.03) 60.915645 (0.09) 60.834 (0.03) 60.915645
Proper motion (declination) [mas/yr] -92.87203171 (0.03) -92.71282529 (0.08) -92.872 (0.03) -92.71282529
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.00
V magnitude 14.64
R magnitude
I magnitude
J magnitude 14.96 14.96 (0.03)
H magnitude 15.04 15.04 (0.07)
K magnitude 15.18 15.18 (0.1)
u magnitude 14.82 (0.004)
g magnitude 14.48 (0.003)
r magnitude 14.77 (0.003)
i magnitude 15.02 (0.003)
z magnitude 15.32 (0.006)
G magnitude 14.63 (0.002) 14.66 14.63 14.63 (0.003) 14.66
BP magnitude 14.60 (0.002) 14.59 14.59
RP magnitude 14.75 (0.001) 14.75 14.75
Pan g magnitude 14.53 (0.001)
Pan r magnitude 14.79 (0.002)
Pan i magnitude 15.06 (0.004)
Pan z magnitude 15.30 (0.003)
Pan y magnitude 15.45 (0.003)
E(B-V) 0.001

* 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.