SDSS J121850.16+412816.6

All names: SDSS J121850.15+412816.5, GALEX J121850.1+412816, SDSS J121850.16+412816.6, Gaia EDR3 1536456449143061248, Gaia DR2 1536456449143061248, Gaia DR3 1536456449143061248

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 18 50.12 (0.3) 12 18 50.16 12 18 50.13 (0.6) 12 18 50.17 (0.3) 12 18 50.16
Declination 41 28 16.71 (0.3) 41 28 16.55 41 28 16.70 (0.5) 41 28 16.43 (0.3) 41 28 16.56
Spectral type DA DA DA DA
Effective temperature [K] 10793.0 12344.0 (411)
log(g) [cgs] 8.34 7.83 (0.2)
Mass [M] 0.817 0.52 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 0.8214
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] 2.76 (0.5) 3.15 (0.8) 2.76 (0.5)
Distance [pc] 362.57 (69) 317.43 (80) 362.57 (69)
Composition H
Proper motion (right ascension) [mas/yr] -31.52703762 (0.5) -30.64416636 (0.9) -31.527 (0.5)
Proper motion (declination) [mas/yr] 17.73099199 (0.5) 17.87527826 (0.8) 17.731 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.39 (0.05) 20.39 (0.05) 20.40 (0.05)
g magnitude 19.91 (0.02) 19.91 (0.02) 19.92 (0.02)
r magnitude 20.03 (0.02) 20.03 (0.02) 20.04 (0.02)
i magnitude 20.35 (0.04) 20.35 (0.04) 20.36 (0.04)
z magnitude 20.69 (0.2) 20.69 (0.2) 20.66 (0.2)
G magnitude 20.00 (0.07) 20.06 20.00 (0.005)
BP magnitude 20.05 (0.07) 19.99
RP magnitude 20.09 (0.09) 19.89
Pan g magnitude 19.93 (0.02)
Pan r magnitude 20.09 (0.02)
Pan i magnitude 20.21 (0.04)
Pan z magnitude 20.44 (0.05)
Pan y magnitude 20.03 (0.2)
E(B-V) 0.018

* 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.