SDSS J074120.74+281245.5

All names: GALEX J074120.7+281245, Gaia DR2 878315005236892416, Gaia EDR3 878315005236892416, SDSS J074120.74+281245.5, SDSS J074120.75+281245.6, SDSS J074120.74+281245.50, WD 0738+283, SDSS J074120.74+281245.4, Gaia DR3 878315005236892416, SDSS J074120.75+281245.5

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 07 41 20.73 (0.3) 07 41 20.74 07 41 20.73 (0.4) 07 41 20.75 (0.3) 07 41 20.74 07 41 20.30 07 41 20.75
Declination 28 12 45.30 (0.3) 28 12 45.57 28 12 45.31 (0.5) 28 12 45.62 (0.3) 28 12 45.50 28 12 39.24 28 12 45.59
Spectral type DB DB DBZA DBZA DB DB:
Effective temperature [K] 13349.0 13030.0 12665.0 13460.0 (95) 14643.0 (298) 13688.0 (219)
log(g) [cgs] 8.26 8.46 8.44 8.00 (0) 8.70 (0.2) 8.58 (0.1)
Mass [M] 0.747 0.882 0.864
log(Luminosity) [L]
Cooling age [Gyr] 0.6516
log(H/He) -5.66 <-5.55
log(C/He)
log(Ca/He) -7.54 (0.1)
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] 3.05 (0.4) 4.13 (0.8) 3.05 (0.4)
Distance [pc] 328.20 (42) 242.02 (46) 343.00 328.20 (42)
Composition He
Proper motion (right ascension) [mas/yr] -16.49072278 (0.4) -16.17639063 (0.8) -16.491 (0.4) 4.8
Proper motion (declination) [mas/yr] -20.34603434 (0.3) -20.3001361 (0.6) -20.346 (0.3) -19.5
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.16 (0.02) 19.16 (0.02) 19.18 (0.03) 19.17 19.17 (0.03)
g magnitude 19.15 (0.01) 19.15 (0.01) 19.16 (0.01) 19.16 19.16 (0.02)
r magnitude 19.38 (0.01) 19.38 (0.01) 19.40 (0.02) 19.40 (0.02)
i magnitude 19.58 (0.02) 19.58 (0.02) 19.60 (0.03) 19.60 (0.03)
z magnitude 19.82 (0.08) 19.82 (0.08) 19.84 (0.07) 19.83 (0.08)
G magnitude 19.25 (0.04) 19.29 19.25 (0.004)
BP magnitude 19.23 (0.04) 19.28
RP magnitude 19.33 (0.07) 19.38
Pan g magnitude 19.18 (0.008)
Pan r magnitude 19.40 (0.007)
Pan i magnitude 19.61 (0.009)
Pan z magnitude 19.79 (0.04)
Pan y magnitude 19.89 (0.1)
E(B-V) 0.018

* 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.