SDSS J001817.47+334313.7

All names: SDSS J001817.47+334313.8, Gaia DR2 2863653948366053632, SDSS J001817.47+334313.79, Gaia DR3 2863653948366053632, SDSS J001817.47+334313.7, Gaia EDR3 2863653948366053632

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Kepler et al. 2016 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 00 18 17.48 (0.2) 00 18 17.47 00 18 17.48 (0.3) 00 18 17.48 00 18 17.47 (0.2)
Declination 33 43 13.76 (0.2) 33 43 13.80 33 43 13.76 (0.3) 33 43 13.76 33 43 13.83 (0.2)
Spectral type DA DA DA DA DA
Effective temperature [K] 8572.0 9243.0 (49) 8338.0 (382)
log(g) [cgs] 7.89 8.04 (0.07) 7.80 (0.1)
Mass [M] 0.534 0.497 (0.03) 0.485 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.7766
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] 4.22 (0.3) 4.20 (0.4) 4.22 4.22 (0.3)
Distance [pc] 236.97 (17) 238.28 (21) 236.97 236.97 (17)
Composition H
Proper motion (right ascension) [mas/yr] 11.04872428 (0.3) 10.40014058 (0.6) 11.049 (0.3)
Proper motion (declination) [mas/yr] -4.611954501 (0.3) -4.635428055 (0.4) -4.612 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.02 (0.04) 20.07 (0.04) 20.05 (0.04)
g magnitude 19.47 (0.01) 19.54 (0.02) 19.48 (0.01)
r magnitude 19.46 (0.02) 19.55 (0.04) 19.47 (0.02)
i magnitude 19.48 (0.02) 19.55 (0.03) 19.48 (0.02)
z magnitude 19.65 (0.08) 19.77 (0.09) 19.64 (0.08)
G magnitude 19.46 (0.03) 19.49 19.46 19.46 (0.004)
BP magnitude 19.61 (0.03) 19.58
RP magnitude 19.24 (0.04) 19.23
Pan g magnitude 19.50 (0.008)
Pan r magnitude 19.51 (0.01)
Pan i magnitude 19.55 (0.008)
Pan z magnitude 19.69 (0.02)
Pan y magnitude 19.65 (0.1)
E(B-V) 0.033

* 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.