SDSS J002248.03+004229.0

All names: 2SLAQ J002248.03+004229.0, SDSS J002248.03+004229.0, SDSS J002248.03+004228.9, SDSS J002248.03+004229.1, Gaia DR2 2546893650655427840, Gaia EDR3 2546893650655427840, USNO-B1.0 0907-00004192, GALEX J002248.0+004229, Gaia DR3 2546893650655427840, SDSS J002248.03+004228.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Eisenstein et al. 2006 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 00 22 48.06 (0.4) 00 22 48.03 00 22 48.06 (0.6) 00 22 48.03 (0.4) 00 22 48.03 00 22 48.03
Declination 00 42 28.20 (0.3) 00 42 28.99 00 42 28.23 (0.4) 00 42 29.10 (0.3) 00 42 29.09 00 42 29.06
Spectral type DA DA SDB: DA DA
Effective temperature [K] 6355.0 7242.0 (154) 6992.0 (151)
log(g) [cgs] 7.38 6.41 (0.6) 6.54 (0.6)
Mass [M] 0.298 0.219 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.9923
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] 4.59 (0.5) 3.87 (0.8) 4.59 (0.5)
Distance [pc] 217.93 (25) 258.40 (50) 217.93 (25)
Composition H
Proper motion (right ascension) [mas/yr] 28.8595955 (0.6) 30.39398842 (2) 28.86 (0.6) 26.8
Proper motion (declination) [mas/yr] -55.97156148 (0.5) -56.69373015 (0.9) -55.972 (0.5) -54.4
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 20.70
V magnitude
R magnitude 19.80
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.80 (0.06) 20.80 (0.06) 20.91 (0.09) 20.90 (0.09)
g magnitude 20.29 (0.02) 20.29 (0.02) 20.32 (0.03) 20.31 (0.02)
r magnitude 20.06 (0.02) 20.06 (0.02) 20.12 (0.03) 20.10 (0.03)
i magnitude 19.99 (0.03) 19.99 (0.03) 19.95 (0.03) 19.94 (0.03)
z magnitude 20.14 (0.1) 20.14 (0.1) 20.25 (0.1) 20.21 (0.1)
G magnitude 20.05 (0.06) 20.10 20.05 (0.005)
BP magnitude 20.30 (0.06) 20.12
RP magnitude 19.79 (0.06) 19.66
Pan g magnitude 20.34 (0.02)
Pan r magnitude 20.08 (0.02)
Pan i magnitude 20.03 (0.01)
Pan z magnitude 20.05 (0.05)
Pan y magnitude 19.77 (0.07)
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.