SDSS J123410.36-022802.8

All names: SDSS J123410.37-022802.8, Gaia DR3 3683189405578704640, EQ J1234-0228, SDSS J123410.36-022802.7, SDSS J123410.37-022802.9, J1234-0228, Gaia EDR3 3683189405578704640, Gaia DR2 3683189405578704640, LAMOST J123410.36-022802.8, WD 1231-021, USNO-B1.0 0875-00322621, GALEX J123410.3-022803, SDSS J123410.36-022802.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Guo et al. 2015 Gianninas et al. 2014 Tremblay et al. 2011 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2004 Vincent et al. 2023
Right ascension 12 34 10.35 (0.1) 12 34 10.37 12 34 10.35 (0.2) 12 34 10.37 (0.1) 12 34 10.37 12 34 10.15 12 34 10.37
Declination -02 28 02.99 (0.09) -02 28 02.81 -02 28 02.98 (0.1) -02 28 02.81 (0.09) -02 28 02.80 -02 28 01.92 -02 28 02.89
Spectral type DA DA DA DA DA DA SD DA
Effective temperature [K] 15361.0 17800.0 (260) 17740.0 (450) 17114.0 (227) 17308.0 (226)
log(g) [cgs] 6.41 6.61 (0.04) 6.40 (0.08) 6.30 (0.05) 6.34 (0.05)
Mass [M] 0.174 0.229 0.17 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 0.2850 (0.1) 0.9550
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) -6.81
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] 1.28 (0.1) 1.33 (0.2) 1.28 (0.1)
Distance [pc] 783.21 (87) 751.40 (122) 766.00 (82) 783.21 (87)
Composition H H H
Proper motion (right ascension) [mas/yr] -16.35705727 (0.2) -15.38661019 (0.5) -16.357 (0.2) -2.5 -5.0
Proper motion (declination) [mas/yr] -11.19392795 (0.1) -10.84383412 (0.3) -11.194 (0.1) -11.5 -12.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude 17.70
V magnitude
R magnitude 18.40
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.16 (0.01) 18.16 (0.01) 18.20 (0.02) 18.19 18.19 (0.02)
g magnitude 17.84 (0.005) 17.84 (0.005) 17.86 (0.02) 17.87 17.87 (0.02)
r magnitude 18.20 (0.007) 18.20 (0.007) 18.22 (0.02) 18.22 18.22 (0.02)
i magnitude 18.41 (0.01) 18.41 (0.01) 18.43 (0.01) 18.44 18.44 (0.01)
z magnitude 18.69 (0.04) 18.69 (0.04) 18.70 (0.04) 18.70 18.70 (0.04)
G magnitude 18.04 (0.01) 18.07 18.04 (0.003)
BP magnitude 18.00 (0.01) 17.96
RP magnitude 18.17 (0.02) 18.15
Pan g magnitude 17.90 (0.004)
Pan r magnitude 18.21 (0.007)
Pan i magnitude 18.50 (0.008)
Pan z magnitude 18.73 (0.007)
Pan y magnitude 18.91 (0.03)
E(B-V) 0.025

* 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.