SDSS J120748.09+313707.2

All names: Gaia DR3 4014800978644834944, Gaia EDR3 4014800978644834944, SDSS J120748.09+313707.2, SDSS J120748.09+313707.1, Gaia DR2 4014800978644834944, SDSS J120748.10+313707.2, LAMOST J120748.09+313707.2, GALEX J120748.1+313707

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Guo et al. 2015 Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 07 48.10 (0.2) 12 07 48.09 12 07 48.10 (0.2) 12 07 48.10 12 07 48.10 (0.2) 12 07 48.10
Declination 31 37 06.99 (0.1) 31 37 07.23 31 37 07.00 (0.2) 31 37 06.99 31 37 07.27 (0.1) 31 37 07.23
Spectral type DA DAZ DA DA DA DA
Effective temperature [K] 19489.0 22777.0 (448) 23052.0 (2269) 21347.0 (443)
log(g) [cgs] 7.59 7.81 (0.07) 8.05 (0.1) 8.02 (0.08)
Mass [M] 0.427 0.53 (0.03) 0.658 (0.1) 0.636 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.0483
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] 2.51 (0.2) 2.07 (0.3) 2.51 2.51 (0.2)
Distance [pc] 397.64 (29) 483.81 (66) 397.64 397.65 (29)
Composition H
Proper motion (right ascension) [mas/yr] 6.81212026 (0.2) 6.885724773 (0.4) 6.812 (0.2)
Proper motion (declination) [mas/yr] -17.6766926 (0.2) -17.2548078 (0.3) -17.677 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.45 (0.02) 18.45 (0.02) 18.44 (0.02)
g magnitude 18.43 (0.007) 18.43 (0.007) 18.48 (0.03)
r magnitude 18.84 (0.01) 18.84 (0.01) 18.85 (0.02)
i magnitude 19.20 (0.01) 19.20 (0.01) 19.18 (0.02)
z magnitude 19.43 (0.06) 19.43 (0.06) 19.40 (0.05)
G magnitude 18.66 (0.02) 18.69 18.66 18.66 (0.004)
BP magnitude 18.59 (0.02) 18.58
RP magnitude 18.90 (0.04) 18.83
Pan g magnitude 18.49 (0.005)
Pan r magnitude 18.86 (0.009)
Pan i magnitude 19.17 (0.01)
Pan z magnitude 19.42 (0.008)
Pan y magnitude 19.58 (0.05)
E(B-V) 0.017

* 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.