SDSS J074805.84+223949.9

All names: SDSS J074805.83+223949.9, Gaia EDR3 674891889376725760, Gaia DR3 674891889376725760, WD 0745+227, SDSS J074805.84+223949.9, GALEX J074805.8+223951, Gaia DR2 674891889376725760

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 07 48 05.84 (0.6) 07 48 05.84 07 48 05.84 (0.8) 07 48 05.84 (0.6) 07 48 05.84 07 48 05.76 07 48 05.84
Declination 22 39 49.92 (0.5) 22 39 49.90 22 39 49.92 (0.5) 22 39 49.90 (0.5) 22 39 49.90 22 39 48.60 22 39 49.91
Spectral type DA DA DA_auto DA DA DA
Effective temperature [K] 8133.0 8476.0 (175) 8371.0 (181)
log(g) [cgs] 8.09 8.07 (0.3) 7.74 (0.3)
Mass [M☉] 0.648 0.475 (0.2)
log(Luminosity) [L☉]
Cooling age [Gyr] 1.1670
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] 4.31 (0.7) 3.63 (0.9) 4.31 (0.7)
Distance [pc] 232.19 (38) 275.83 (66) 232.19 (38)
Composition H
Proper motion (right ascension) [mas/yr] -5.534825327 (0.9) -6.186293245 (1) -5.535 (0.9) -0.2
Proper motion (declination) [mas/yr] 1.440528603 (0.7) 0.777765844 (1) 1.441 (0.7) 6.1
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.78 (0.06) 20.78 (0.06) 20.68 (0.07) 20.67 20.66 (0.07)
g magnitude 20.32 (0.02) 20.32 (0.02) 20.34 (0.02) 20.33 20.33 (0.02)
r magnitude 20.24 (0.02) 20.25 (0.03) 20.30 (0.03) 20.30 20.30 (0.03)
i magnitude 20.33 (0.04) 20.33 (0.04) 20.34 (0.04) 20.33 20.33 (0.05)
z magnitude 20.37 (0.1) 20.38 (0.1) 20.35 (0.2) 20.34 20.34 (0.2)
G magnitude 20.22 (0.1) 20.29 20.22 (0.007)
BP magnitude 20.29 (0.1) 20.10
RP magnitude 19.87 (0.1) 19.93
Pan g magnitude 20.29 (0.02)
Pan r magnitude 20.29 (0.01)
Pan i magnitude 20.40 (0.07)
Pan z magnitude 20.34 (0.03)
Pan y magnitude 20.66 (0.2)
E(B-V) 0.011

* 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.