SDSS J094909.30+305442.2

All names: SDSS J094909.30+305442.1, LAMOST J094909.30+305442.2, GALEX J094909.3+305442, Gaia DR3 744745718514455936, Gaia DR2 744745718514455936, SDSS J094909.30+305442.2, Gaia EDR3 744745718514455936

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 09 49 09.30 (0.2) 09 49 09.30 09 49 09.30 (0.2) 09 49 09.30 09 49 09.31 (0.2) 09 49 09.30
Declination 30 54 42.07 (0.1) 30 54 42.20 30 54 42.07 (0.2) 30 54 42.07 30 54 42.22 (0.1) 30 54 42.21
Spectral type DA DA DA DA DA DA
Effective temperature [K] 23513.0 30439.0 (2503) 26374.0 (386)
log(g) [cgs] 8.11 8.19 (0.1) 7.93 (0.05)
Mass [M] 0.697 0.758 (0.09) 0.602 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.0433
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] 2.39 (0.2) 2.80 (0.3) 2.39 2.39 (0.2)
Distance [pc] 418.19 (33) 357.13 (41) 418.19 418.20 (33)
Composition H
Proper motion (right ascension) [mas/yr] -3.480621795 (0.2) -2.896488802 (0.4) -3.481 (0.2)
Proper motion (declination) [mas/yr] -9.317070215 (0.2) -9.499061439 (0.4) -9.317 (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 18.05 (0.01) 18.05 (0.01) 18.06 (0.02)
g magnitude 18.17 (0.006) 18.18 (0.006) 18.19 (0.02)
r magnitude 18.60 (0.009) 18.61 (0.009) 18.59 (0.02)
i magnitude 18.93 (0.01) 18.93 (0.01) 18.92 (0.02)
z magnitude 19.36 (0.05) 19.36 (0.05) 19.37 (0.05)
G magnitude 18.42 (0.02) 18.46 18.42 18.42 (0.003)
BP magnitude 18.30 (0.02) 18.27
RP magnitude 18.69 (0.03) 18.61
Pan g magnitude 18.25 (0.005)
Pan r magnitude 18.62 (0.008)
Pan i magnitude 18.98 (0.009)
Pan z magnitude 19.27 (0.02)
Pan y magnitude 19.38 (0.03)
E(B-V) 0.019

* 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.