SDSS J074807.22+205814.2

All names: Gaia DR3 673674175953080448, WD 0745+210, Gaia EDR3 673674175953080448, Gaia DR2 673674175953080448, SDSS J074807.22+205814.2, GALEX J074807.2+205813

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism sdss-wdms.org (29/04/2016) Tremblay et al. 2011 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013
Right ascension 07 48 07.22 (0.2) 07 48 07.22 07 48 07.22 (0.2) 07 48 07.22 07 48 07.22 (0.2) 07 48 07.22 07 48 06.70 07 48 07.22
Declination 20 58 14.30 (0.1) 20 58 14.22 20 58 14.30 (0.2) 20 58 14.20 20 58 14.26 (0.1) 20 58 14.23 20 58 12.36 20 58 14.24
Spectral type DA+M DA+M DA+M DA DA+M DA+M: DA DA+M
Effective temperature [K] 73586.0 (3848) 21980.0 86726.0 (7788) 96740.0 (9220) 97110.0 (3929) 87348.0 (4996)
log(g) [cgs] 7.22 (0.1) 6.46 7.13 (0.3) 7.10 (0.2) 7.05 (0.2) 7.11 (0.2)
Mass [M] 0.47 (0.03) 0.171 0.52 (0.06) 0.55 (0.05)
log(Luminosity) [L] 1.31 (0.1)
Cooling age [Gyr] 0.0001 0.0000
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] 0.82 (0.2) 0.94 (0.2) 0.82 (0.2)
Distance [pc] 1220.79 (284) 1064.16 (240) 288.00 (43) 1220.85 (284)
Composition H H H
Proper motion (right ascension) [mas/yr] -4.047338789 (0.2) -4.454568983 (0.4) -4.047 (0.2) 6.6
Proper motion (declination) [mas/yr] 2.606269321 (0.2) 2.830988759 (0.3) 2.606 (0.2) 4.8
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS WDMS WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 18.15 (0.04)
H magnitude 17.95 (0.08)
K magnitude 17.80 (0.1)
u magnitude 17.63 (0.01) 17.62 17.63 (0.01) 17.62 (0.02) 17.62 17.62 (0.02)
g magnitude 18.04 (0.006) 18.05 18.04 (0.006) 18.05 (0.01) 18.05 18.04 (0.01)
r magnitude 18.55 (0.009) 18.55 18.55 (0.009) 18.55 (0.01) 18.55 18.55 (0.01)
i magnitude 18.87 (0.01) 18.87 18.87 (0.01) 18.87 (0.01) 18.87 18.88 (0.01)
z magnitude 18.84 (0.04) 18.84 18.84 (0.04) 18.84 (0.04) 18.84 18.85 (0.04)
G magnitude 18.29 (0.02) 18.33 18.29 (0.004)
BP magnitude 18.15 (0.02) 18.00
RP magnitude 18.45 (0.05) 18.37
Pan g magnitude 18.12 (0.01)
Pan r magnitude 18.57 (0.005)
Pan i magnitude 18.85 (0.005)
Pan z magnitude 19.01 (0.01)
Pan y magnitude 19.02 (0.03)
E(B-V) 0.045

* 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.