SDSS J122526.22+621552.5

All names: SDSS J122526.22+621552.50, Gaia DR3 1583457036472630144, SDSS J122526.22+621552.5, USNO-A2.0 1500-05553060, GALEX J122526.2+621552, Gaia DR2 1583457036472630144, Gaia EDR3 1583457036472630144, WD 1223+625, SDSS J122526.22+621552.4

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 25 26.20 (0.2) 12 25 26.22 12 25 26.21 (0.2) 12 25 26.20 12 25 26.23 (0.2) 12 25 26.23 12 25 26.26 12 25 26.22
Declination 62 15 52.57 (0.1) 62 15 52.46 62 15 52.57 (0.2) 62 15 52.57 62 15 52.42 (0.1) 62 15 52.51 62 15 47.52 62 15 52.53
Spectral type DB: DB DB DB: DB: DB DB+MS
Effective temperature [K] 14458.0 13200.0 12495.0 14144.0 (79) 12106.0 (612) 14596.0 (330) 13977.0 (337)
log(g) [cgs] 7.90 7.87 7.80 8.00 (0) 7.84 (0.1) 8.06 (0.3) 7.97 (0.3)
Mass [M] 0.533 0.512 0.476 0.495 (0.07) 0.563 (0.2)
log(Luminosity) [L]
Cooling age [Gyr] 0.2608
log(H/He) <-6.04 -4.89 (0.4)
log(C/He)
log(Ca/He) -8.01 (0.2)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 3.14 (0.2) 2.92 (0.3) 3.14 3.14 (0.2)
Distance [pc] 318.07 (19) 342.43 (29) 332.00 318.07 318.08 (19)
Composition He
Proper motion (right ascension) [mas/yr] -11.50024246 (0.2) -12.00622066 (0.4) -11.5 (0.2) -4.6
Proper motion (declination) [mas/yr] 9.675461581 (0.2) 9.843932246 (0.3) 9.675 (0.2) 8.4
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude 18.10 (0.3)
V magnitude
R magnitude 18.50 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.98 (0.02) 18.98 (0.02) 18.97 (0.03) 18.96 18.99 (0.03)
g magnitude 19.00 (0.009) 19.00 (0.009) 18.99 (0.02) 18.98 19.01 (0.02)
r magnitude 19.21 (0.01) 19.21 (0.01) 19.24 (0.02) 19.23 19.25 (0.02)
i magnitude 19.44 (0.02) 19.44 (0.02) 19.41 (0.02) 19.41 19.42 (0.02)
z magnitude 19.63 (0.08) 19.63 (0.08) 19.72 (0.1) 19.72 19.74 (0.1)
G magnitude 19.09 (0.03) 19.13 19.09 19.09 (0.004)
BP magnitude 19.08 (0.03) 19.04
RP magnitude 19.07 (0.04) 19.14
Pan g magnitude 19.02 (0.009)
Pan r magnitude 19.24 (0.01)
Pan i magnitude 19.43 (0.02)
Pan z magnitude 19.64 (0.02)
Pan y magnitude 19.75 (0.06)
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.