SDSS J153925.74+572640.4

All names: SDSS J153925.73+572640.40, SDSS J153925.73+572640.4, WD 1538+576, Gaia EDR3 1601924223319464064, Gaia DR2 1601924223319464064, Gaia DR3 1601924223319464064, GALEX J153925.7+572640, SDSS J153925.74+572640.4

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 39 25.74 (0.5) 15 39 25.73 15 39 25.74 (0.7) 15 39 25.73 (0.5) 15 39 25.74 15 39 25.10 15 39 25.73
Declination 57 26 40.29 (0.4) 57 26 40.48 57 26 40.29 (0.7) 57 26 40.46 (0.4) 57 26 40.47 57 26 39.12 57 26 40.44
Spectral type DB: DB DB: DB: DB: DB
Effective temperature [K] 16310.0 12952.0 10944.0 14237.0 (712) 13440.0 (710)
log(g) [cgs] 10.23 7.87 7.50 8.29 (0.5) 8.56 (0.6)
Mass [M] 2.103 0.514 0.339
log(Luminosity) [L]
Cooling age [Gyr] 0.2859
log(H/He) <-5.684
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 1.60 (0.4) 1.69 (0.8) 1.60 (0.4)
Distance [pc] 626.25 (162) 593.23 (271) 626.25 (162)
Composition He
Proper motion (right ascension) [mas/yr] 4.439397305 (0.5) 5.758954573 (2) 4.439 (0.5) 17.4
Proper motion (declination) [mas/yr] -10.42725994 (0.6) -9.908719494 (1) -10.427 (0.6) -18.6
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.24 (0.05) 20.22 (0.06) 20.20 (0.06) 20.19 20.20 (0.06)
g magnitude 20.22 (0.02) 20.23 (0.02) 20.24 (0.02) 20.23 20.23 (0.02)
r magnitude 20.43 (0.03) 20.45 (0.03) 20.46 (0.03) 20.45 20.45 (0.03)
i magnitude 20.67 (0.06) 20.70 (0.06) 20.69 (0.06) 20.69 20.69 (0.06)
z magnitude 20.31 (0.2) 20.35 (0.2) 20.37 (0.2) 20.37 20.36 (0.2)
G magnitude 20.34 (0.07) 20.43 20.34 (0.007)
BP magnitude 20.32 (0.07) 20.28
RP magnitude 20.09 (0.1) 20.20
Pan g magnitude 20.30 (0.04)
Pan r magnitude 20.46 (0.05)
Pan i magnitude 20.68 (0.02)
Pan z magnitude 20.76 (0.05)
Pan y magnitude
E(B-V) 0.020

* 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.