SDSS J203451.07+134534.2

All names: SDSS J203451.07+134534.2, SDSS J203451.06+134532.4, SDSS J203451.07+134534.27, WDJ203451.05+134532.17, SDSS J203451.07+134534.3, J2034+1345, Gaia DR3 1756261467922806784, Gaia EDR3 1756261467922806784, SDSS J203451.06+134532.5, Gaia DR2 1756261467922806784

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Kilic et al. 2025 Caron et al. 2023 Kilic et al. 2020 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Vincent et al. 2023
Right ascension 20 34 51.09 (0.1) 20 34 51.06 20 34 51.09 (0.2) 20 34 51.09 20 34 51.05 (0.1) 20 34 51.09
Declination 13 45 33.09 (0.1) 13 45 32.50 13 45 33.06 (0.2) 13 45 33.09 13 45 32.17 (0.1) 13 45 33.06
Spectral type DA DA DA DA DA DA DA DA
Effective temperature [K] 7174.0 (86) 7194.0 (79) 7174.0 (86) 7204.0 7154.0 (27) 7190.0 (152)
log(g) [cgs] 8.45 (0.02) 8.45 (0.02) 8.45 (0.02) 8.45 8.40 (0.08) 8.45 (0.04)
Mass [M] 0.882 (0.02) 0.884 (0.02) 0.88 (0.02) 0.885 0.838 (0.05) 0.884 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 3.6300 3.3950
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] 12.72 (0.2) 12.70 (0.2) 12.70 (0.2) 12.72 12.72 (0.2) 12.70 (0.2)
Distance [pc] 78.60 (1) 78.74 (1) 78.76 (1) 78.60 78.60 (1) 78.76 (1)
Composition H H H
Proper motion (right ascension) [mas/yr] 31.93447319 (0.2) 31.87453329 (0.4) 31.934 (0.2) 31.87453329
Proper motion (declination) [mas/yr] 57.77320605 (0.2) 57.6713585 (0.4) 57.773 (0.2) 57.6713585
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.89 (0.07)
H magnitude
K magnitude
u magnitude 19.20 (0.02) 19.19 (0.02) 19.20 (0.03) 19.20 (0.02) 19.20 (0.02)
g magnitude 18.68 (0.008) 18.69 (0.01) 18.68 (0.008) 18.68 (0.008)
r magnitude 18.51 (0.008) 18.49 (0.01) 18.51 (0.008) 18.51 (0.008)
i magnitude 18.51 (0.01) 18.51 (0.01) 18.51 (0.01) 18.51 (0.01)
z magnitude 18.56 (0.03) 18.55 (0.03) 18.56 (0.03) 18.56 (0.03)
G magnitude 18.47 (0.02) 18.49 18.47 18.47 (0.003) 18.49
BP magnitude 18.67 (0.02) 18.67 18.67
RP magnitude 18.18 (0.02) 18.18 18.18
Pan g magnitude 18.66 (0.02) 18.66 (0.02)
Pan r magnitude 18.52 (0.007) 18.52 (0.008)
Pan i magnitude 18.51 (0.01) 18.51 (0.009)
Pan z magnitude 18.57 (0.009) 18.57 (0.01)
Pan y magnitude 18.60 (0.02) 18.60 (0.02)
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.