SDSS J123453.35+491127.8

All names: J1234+4911, GALEX J123453.3+491127, Gaia DR2 1544285079309656064, Gaia EDR3 1544285079309656064, Gaia DR3 1544285079309656064, SDSS J123453.35+491127.9, WDJ123453.36+491127.75, SDSS J123453.35+491127.8, WD 1232+494, LAMOST J123453.36+491128.0, SDSS J123453.34+491127.9

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Stilism Guo et al. 2015 Tremblay et al. 2011 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 34 53.30 (0.06) 12 34 53.36 12 34 53.31 (0.08) 12 34 53.30 12 34 53.36 (0.06) 12 34 53.31 12 34 53.35 12 34 53.38 12 34 53.35
Declination 49 11 28.25 (0.07) 49 11 27.84 49 11 28.24 (0.09) 49 11 28.25 49 11 27.76 (0.07) 49 11 28.24 49 11 27.93 49 11 22.92 49 11 27.92
Spectral type DA DA DA DA DA DA DA_auto DA DA DA
Effective temperature [K] 7614.0 (37) 7399.0 7135.0 7580.0 (80) 7575.0 (91) 7973.0 (49) 7540.0 (47)
log(g) [cgs] 7.95 (0.02) 7.87 7.76 7.90 (0.1) 7.93 (0.02) 8.39 (0.1) 7.74 (0.1)
Mass [M] 0.563 (0.01) 0.521 0.442 0.53 (0.08) 0.555 (0.02) 0.472 (0.06)
log(Luminosity) [L]
Cooling age [Gyr] 1.1700 1.1040 1.0970 1.0965
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] 11.26 (0.1) 11.13 (0.1) 11.13 (0.1) 11.26 11.26 (0.1) 11.13 (0.1)
Distance [pc] 88.81 (0.9) 89.85 (1) 89.83 (1) 88.81 88.81 (0.9) 89.83 (1)
Composition H H
Proper motion (right ascension) [mas/yr] -34.58736735 (0.07) -34.63538288 (0.1) -34.587 (0.07) -34.635 -31.7
Proper motion (declination) [mas/yr] 30.80966695 (0.1) 31.23205567 (0.2) 30.81 (0.1) 31.232 33.1
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.33 (0.03)
H magnitude
K magnitude
u magnitude 18.40 (0.01) 18.43 (0.01) 18.40 (0.01) 18.40 (0.01) 18.39 (0.03) 18.39 18.41 (0.03)
g magnitude 17.95 (0.006) 17.95 (0.006) 17.95 (0.006) 17.93 (0.01) 17.93 17.95 (0.01)
r magnitude 17.85 (0.006) 17.85 (0.006) 17.85 (0.006) 17.85 (0.02) 17.85 17.85 (0.02)
i magnitude 17.83 (0.007) 17.83 (0.007) 17.83 (0.007) 17.83 (0.01) 17.83 17.84 (0.02)
z magnitude 17.88 (0.02) 17.88 (0.02) 17.88 (0.02) 17.88 (0.03) 17.88 17.90 (0.03)
G magnitude 17.81 (0.009) 17.84 17.81 17.81 (0.003) 17.84
BP magnitude 17.97 (0.009) 17.97 17.97
RP magnitude 17.50 (0.01) 17.53 17.53
Pan g magnitude 17.97 (0.003) 17.97 (0.003)
Pan r magnitude 17.86 (0.004) 17.86 (0.004)
Pan i magnitude 17.86 (0.003) 17.86 (0.003)
Pan z magnitude 17.92 (0.008) 17.92 (0.007)
Pan y magnitude 17.96 (0.01) 17.96 (0.01)
E(B-V) 0.006

* 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.