SDSS J123412.27+305123.1

All names: Gaia DR3 4012252894807339264, Gaia EDR3 4012252894807339264, Gaia DR2 4012252894807339264, J1234+3051, SDSS J123412.27+305123.1, SDSS J123412.27+305123.15

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Coutu et al. 2019 MWDD H Gaia DR2 Stilism Kepler et al. 2016 Simbad Vincent et al. 2023
Right ascension 12 34 12.24 (0.6) 12 34 12.27 12 34 12.28 12 34 12.24 (0.7) 12 34 12.29 (0.6)
Declination 30 51 23.01 (0.3) 30 51 23.15 30 51 23.19 30 51 23.01 (0.4) 30 51 23.20 (0.3)
Spectral type DZ DZ DZ DZ DZ
Effective temperature [K] 7552.0 (380) 8495.0 8768.0 (183)
log(g) [cgs] 7.39 7.75 8.00 (0)
Mass [M] 0.2882 0.459
log(Luminosity) [L]
Cooling age [Gyr] 0.6910 0.6744
log(H/He) <-4.9456
log(C/He)
log(Ca/He) -10.5827 (0.2) -8.898
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] 4.29 (0.7) 2.70 2.70 (0.9) 4.29 (0.7)
Distance [pc] 233.35 (36) 370.97 (125) 370.97 (125) 233.35 (36)
Composition He He He
Proper motion (right ascension) [mas/yr] -37.02421675 (0.6) -33.22422858 (1) -37.024 (0.6)
Proper motion (declination) [mas/yr] -11.98602013 (0.5) -11.26022135 (0.7) -11.986 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.91 (0.09) 20.92 (0.09) 20.91 (0.09)
g magnitude 20.40 (0.02) 20.40 (0.02) 20.40 (0.02)
r magnitude 20.31 (0.03) 20.32 (0.03) 20.31 (0.03)
i magnitude 20.43 (0.05) 20.44 (0.05) 20.43 (0.05)
z magnitude 20.49 (0.2) 20.48 (0.2) 20.49 (0.2)
G magnitude 20.27 (0.09) 20.33 20.27 (0.006)
BP magnitude 20.55 (0.09) 20.81
RP magnitude 20.19 (0.09) 20.27
Pan g magnitude 20.32 (0.01)
Pan r magnitude 20.27 (0.02)
Pan i magnitude 20.37 (0.02)
Pan z magnitude 20.51 (0.06)
Pan y magnitude 20.43 (0.2)
E(B-V) 0.010

* 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.