SDSS J122929.04+425414.4

All names: SDSS J122929.04+425414.5, Gaia DR3 1535265643690386816, GALEX J122929.0+425414, WD 1227+431, Gaia EDR3 1535265643690386816, SDSS J122929.04+425414.4, Gaia DR2 1535265643690386816, J1229+4254

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Coutu et al. 2019 MWDD H Gaia DR2 Stilism Dufour et al. 2007 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 29 29.02 (0.4) 12 29 29.04 12 29 29.04 12 29 29.02 (0.8) 12 29 29.04 (0.4) 12 29 29.05 12 29 29.09 12 29 29.04
Declination 42 54 14.36 (0.4) 42 54 14.50 42 54 14.48 42 54 14.36 (0.5) 42 54 14.47 (0.4) 42 54 14.49 42 54 07.56 42 54 14.48
Spectral type DZ DZ DZ DZ+M DZ: DZ: DZM DC:
Effective temperature [K] 11868.0 (692) 10787.0 11090.0 (690) 11870.0 (433) 11789.0 (463)
log(g) [cgs] 7.99 7.89 8.00 8.24 (0.4) 8.60 (0.7)
Mass [M] 0.5758 0.542
log(Luminosity) [L]
Cooling age [Gyr] 0.3860 0.4333
log(H/He) <-6.0934 <-5.0
log(C/He)
log(Ca/He) -8.2986 (0.6) -9.48 (0.3)
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] 1.89 (0.6) 2.13 2.13 (0.8) 1.89 (0.6)
Distance [pc] 530.20 (165) 469.98 (172) 469.98 (172) 429.00 530.19 (165)
Composition He He He
Proper motion (right ascension) [mas/yr] -13.42540204 (0.6) -13.60002342 (1) -13.425 (0.6) -1.0
Proper motion (declination) [mas/yr] -7.234139769 (0.6) -7.513385675 (0.9) -7.234 (0.6) -10.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.13 (0.04) 20.13 (0.04) 20.14 (0.04) 20.14 20.13 (0.05)
g magnitude 20.08 (0.02) 20.08 (0.02) 20.11 (0.03) 20.11 20.10 (0.03)
r magnitude 20.27 (0.03) 20.27 (0.03) 20.25 (0.03) 20.25 20.25 (0.03)
i magnitude 20.48 (0.05) 20.48 (0.04) 20.50 (0.05) 20.50 20.49 (0.05)
z magnitude 20.55 (0.2) 20.55 (0.2) 20.57 (0.1) 20.58 20.55 (0.1)
G magnitude 20.18 (0.08) 20.24 20.18 (0.006)
BP magnitude 20.14 (0.08) 19.98
RP magnitude 20.02 (0.2) 19.89
Pan g magnitude 20.09 (0.02)
Pan r magnitude 20.33 (0.02)
Pan i magnitude 20.51 (0.02)
Pan z magnitude 20.58 (0.05)
Pan y magnitude
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.