WD 1226+158

All names: SDSS J122902.16+153559.4, Gaia DR2 3933689559187085056, A3 254, Gaia EDR3 3933689559187085056, RMB 37, WD 1226+158, USNO-A2.0 1050-06726309, Gaia DR3 3933689559187085056, LBQS 1226+1552, USNO-B1.0 1056-00216960, GALEX J122902.2+153559

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999)
Right ascension 12 29 02.17 (0.1) 12 29 02.17 (0.1) 12 29 02.17 12 29 02.16 (0.1) 12 29 01.49
Declination 15 35 58.63 (0.09) 15 35 58.67 (0.1) 15 35 58.63 15 35 59.72 (0.09) 15 36 01.08
Spectral type DA DA DA DA
Effective temperature [K] 11895.0 12815.0 (468)
log(g) [cgs] 8.14 8.18 (0.03)
Mass [M] 0.692 0.719 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.4678
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] 6.66 (0.1) 6.91 (0.2) 6.66 6.66 (0.1)
Distance [pc] 150.09 (3) 144.71 (3) 150.09 150.09 (3)
Composition H
Proper motion (right ascension) [mas/yr] 1.785357251 (0.1) 2.368906206 (0.3) 1.785 (0.1)
Proper motion (declination) [mas/yr] -67.83158732 (0.1) -67.94539654 (0.2) -67.832 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.80
V magnitude
R magnitude 18.00
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.00 (0.01)
g magnitude 17.63 (0.005)
r magnitude 17.82 (0.006)
i magnitude 17.99 (0.009)
z magnitude 18.23 (0.03)
G magnitude 17.72 (0.01) 17.74 17.72 17.72 (0.003)
BP magnitude 17.74 (0.01) 17.73
RP magnitude 17.76 (0.01) 17.74
Pan g magnitude 17.64 (0.006)
Pan r magnitude 17.84 (0.003)
Pan i magnitude 18.03 (0.006)
Pan z magnitude 18.26 (0.007)
Pan y magnitude 18.38 (0.02)
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.