SDSS J210402.30+000411.0

All names: SDSS J210402.30+000411.0, SDSS J210402.30+000410.9, Gaia DR2 2690119127666864384, GALEX J210402.3+000411, Gaia EDR3 2690119127666864384, Gaia DR3 2690119127666864384, SDSS J210402.31+000411.0, WD 2101-001

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Tremblay et al. 2011 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 21 04 02.30 (0.2) 21 04 02.31 21 04 02.30 (0.2) 21 04 02.30 (0.2) 21 04 02.30 21 04 01.80 21 04 02.30
Declination 00 04 10.85 (0.2) 00 04 10.97 00 04 10.86 (0.2) 00 04 11.02 (0.2) 00 04 10.99 00 04 15.24 00 04 10.99
Spectral type DA DA DA DA DA_auto DA DA DA
Effective temperature [K] 34478.0 (461) 22628.0 34810.0 (700) 35694.0 (506) 34426.0 (329)
log(g) [cgs] 7.77 (0.08) 7.24 8.04 (0.1) 8.03 (0.1) 7.79 (0.06)
Mass [M] 0.54 (0.04) 0.33 0.68 (0.07) 0.559 (0.03)
log(Luminosity) [L] -0.49 (0.06)
Cooling age [Gyr] 0.0056 (0.0004) 0.0193 0.0072
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] 1.14 (0.2) 1.29 (0.3) 1.14 (0.2)
Distance [pc] 878.48 (158) 774.05 (154) 878.50 (158)
Composition H H H
Proper motion (right ascension) [mas/yr] 1.183359366 (0.2) 1.25231865 (0.5) 1.183 (0.2) -3.6
Proper motion (declination) [mas/yr] -10.54694058 (0.2) -10.48351941 (0.5) -10.547 (0.2) -5.7
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.26 (0.01) 18.27 (0.01) 18.28 (0.02) 18.27 18.30 (0.02)
g magnitude 18.54 (0.007) 18.54 (0.007) 18.55 (0.01) 18.55 18.56 (0.01)
r magnitude 19.01 (0.01) 19.01 (0.01) 18.99 (0.01) 18.98 18.99 (0.01)
i magnitude 19.35 (0.02) 19.35 (0.02) 19.33 (0.02) 19.32 19.32 (0.02)
z magnitude 19.66 (0.08) 19.66 (0.08) 19.63 (0.08) 19.62 19.62 (0.08)
G magnitude 18.77 (0.02) 18.81 18.77 (0.003)
BP magnitude 18.65 (0.02) 18.62
RP magnitude 19.11 (0.06) 19.09
Pan g magnitude 18.61 (0.009)
Pan r magnitude 19.02 (0.008)
Pan i magnitude 19.38 (0.007)
Pan z magnitude 19.65 (0.03)
Pan y magnitude 19.58 (0.05)
E(B-V) 0.048

* 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.