SDSS J120943.68+172948.5

All names: Gaia EDR3 3949735075968493568, Gaia DR2 3949735075968493568, SDSS J120943.68+172948.5, Gaia DR3 3949735075968493568, SDSS J120943.68+172948.4, GALEX J120943.6+172949

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 09 43.67 (0.3) 12 09 43.68 12 09 43.67 (0.3) 12 09 43.67 12 09 43.68 (0.3) 12 09 43.68
Declination 17 29 48.46 (0.2) 17 29 48.50 17 29 48.46 (0.2) 17 29 48.46 17 29 48.53 (0.2) 17 29 48.55
Spectral type DA DA DA DA DA
Effective temperature [K] 13748.0 14991.0 (1492) 16454.0 (306)
log(g) [cgs] 7.93 7.96 (0.1) 7.88 (0.07)
Mass [M☉] 0.571 0.592 (0.1) 0.555 (0.03)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.2319
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] 2.93 (0.3) 2.95 (0.4) 2.93 2.93 (0.3)
Distance [pc] 341.80 (33) 339.12 (51) 341.80 341.80 (33)
Composition H
Proper motion (right ascension) [mas/yr] -12.00890672 (0.3) -11.17670461 (0.6) -12.009 (0.3)
Proper motion (declination) [mas/yr] -4.334911899 (0.2) -4.352030544 (0.4) -4.335 (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 19.17 (0.03) 19.18 (0.03) 19.18 (0.03)
g magnitude 18.91 (0.009) 18.91 (0.009) 18.91 (0.02)
r magnitude 19.15 (0.01) 19.15 (0.01) 19.13 (0.02)
i magnitude 19.39 (0.02) 19.39 (0.02) 19.40 (0.03)
z magnitude 19.50 (0.09) 19.50 (0.09) 19.50 (0.1)
G magnitude 19.02 (0.02) 19.06 19.02 19.02 (0.004)
BP magnitude 18.99 (0.02) 18.95
RP magnitude 19.13 (0.04) 19.14
Pan g magnitude 18.91 (0.01)
Pan r magnitude 19.15 (0.004)
Pan i magnitude 19.42 (0.01)
Pan z magnitude 19.65 (0.02)
Pan y magnitude 19.78 (0.04)
E(B-V) 0.023

* 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.