SDSS J072557.63+384649.8

All names: SDSS J072557.64+384649.8, SDSS J072557.63+384649.8, GALEX J072557.6+384649, Gaia EDR3 899832482152189568, Gaia DR2 899832482152189568, Gaia DR3 899832482152189568, WD 0722+388

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Tremblay et al. 2011 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 07 25 57.65 (0.3) 07 25 57.65 07 25 57.65 (0.4) 07 25 57.64 (0.3) 07 25 57.64 07 25 57.91 07 25 57.64
Declination 38 46 49.85 (0.3) 38 46 49.83 38 46 49.85 (0.8) 38 46 49.78 (0.3) 38 46 49.81 38 46 47.64 38 46 49.81
Spectral type DA DA DA DA_auto DA DA DA
Effective temperature [K] 8633.0 8770.0 (80) 8887.0 (60) 8685.0 (66)
log(g) [cgs] 8.01 8.23 (0.1) 8.28 (0.1) 8.07 (0.1)
Mass [M] 0.6 0.74 (0.07) 0.637 (0.06)
log(Luminosity) [L]
Cooling age [Gyr] 0.8889 1.2303
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] 4.97 (0.5) 5.41 (1) 4.97 (0.5)
Distance [pc] 201.20 (19) 184.79 (38) 201.20 (19)
Composition H H
Proper motion (right ascension) [mas/yr] 8.219430436 (0.3) 8.116586953 (0.9) 8.219 (0.3) -2.0
Proper motion (declination) [mas/yr] 4.136981598 (0.3) 5.035661071 (0.7) 4.137 (0.3) -3.5
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.60 (0.03) 19.60 (0.03) 19.59 (0.03) 19.58 19.58 (0.03)
g magnitude 19.09 (0.009) 19.09 (0.009) 19.11 (0.01) 19.10 19.10 (0.02)
r magnitude 19.06 (0.01) 19.06 (0.01) 19.06 (0.02) 19.05 19.06 (0.02)
i magnitude 19.12 (0.02) 19.12 (0.02) 19.12 (0.02) 19.11 19.12 (0.02)
z magnitude 19.35 (0.07) 19.35 (0.07) 19.31 (0.07) 19.30 19.31 (0.07)
G magnitude 19.02 (0.03) 19.05 19.02 (0.005)
BP magnitude 19.11 (0.03) 19.18
RP magnitude 18.79 (0.07) 18.82
Pan g magnitude 19.09 (0.007)
Pan r magnitude 19.07 (0.01)
Pan i magnitude 19.15 (0.007)
Pan z magnitude 19.27 (0.01)
Pan y magnitude 19.30 (0.07)
E(B-V) 0.013

* 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.