SDSS J122238.87+005034.4

All names: SDSS J122238.87+005034.4, 2QZ J122238.8+005033, Gaia DR2 3699820274863286272, Gaia EDR3 3699820274863286272, SDSS J122238.86+005034.4, GALEX J122238.8+005034, Gaia DR3 3699820274863286272

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 22 38.84 (0.5) 12 22 38.86 12 22 38.84 (0.5) 12 22 38.87 (0.5) 12 22 38.87
Declination 00 50 34.48 (0.3) 00 50 34.42 00 50 34.48 (0.4) 00 50 34.41 (0.3) 00 50 34.42
Spectral type DA DAH DAH DAH DA
Effective temperature [K] 11688.9 (324) 11678.0 12956.0 (470)
log(g) [cgs] (0.2) 6.96 7.86 (0.09)
Mass [M] 0.2296669471675473 (0.1) 0.222
log(Luminosity) [L]
Cooling age [Gyr]
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] 1.02 (0.5) 1.18 (0.7) 1.02 (0.5)
Distance [pc] 978.09 (474) 846.23 (484) 978.09 (474)
Composition H
Proper motion (right ascension) [mas/yr] -24.64600654 (0.7) -26.40711808 (2) -24.646 (0.7)
Proper motion (declination) [mas/yr] 4.150444493 (0.4) 4.779265009 (0.9) 4.15 (0.4)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.46 (0.08) 20.46 (0.08) 20.27 (0.05)
g magnitude 19.94 (0.02) 19.94 (0.02) 19.87 (0.03)
r magnitude 20.06 (0.03) 20.06 (0.03) 20.09 (0.03)
i magnitude 20.35 (0.07) 20.35 (0.07) 20.31 (0.05)
z magnitude 20.55 (0.3) 20.55 (0.3) 20.54 (0.2)
G magnitude 19.97 (0.05) 20.04 19.97 (0.005)
BP magnitude 19.99 (0.05) 19.92
RP magnitude 20.02 (0.08) 19.77
Pan g magnitude 19.89 (0.01)
Pan r magnitude 20.08 (0.01)
Pan i magnitude 20.33 (0.02)
Pan z magnitude 20.60 (0.06)
Pan y magnitude
E(B-V) 0.024

* 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.