SDSS J084556.71+183357.4

All names: Gaia EDR3 660191174099398912, Gaia DR3 660191174099398912, GALEX J084556.7+183357, Gaia DR2 660191174099398912, SDSS J084556.71+183357.4, SDSS J084556.71+183357.3

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 08 45 56.71 (0.4) 08 45 56.71 08 45 56.71 (0.6) 08 45 56.72 (0.4) 08 45 56.71
Declination 18 33 57.28 (0.2) 18 33 57.37 18 33 57.28 (0.4) 18 33 57.37 (0.2) 18 33 57.38
Spectral type DA DA DA DA
Effective temperature [K] 15638.0 20152.0 (516)
log(g) [cgs] 6.90 8.20 (0.1)
Mass [M] 0.233 0.733 (0.06)
log(Luminosity) [L]
Cooling age [Gyr]
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] 1.54 (0.5) 0.91 (0.7) 1.54 (0.5)
Distance [pc] 649.10 (229) 1096.23 (826) 649.10 (229)
Composition H
Proper motion (right ascension) [mas/yr] -3.579848736 (0.5) -4.704689982 (1) -3.58 (0.5)
Proper motion (declination) [mas/yr] -5.876513887 (0.4) -5.603715641 (0.9) -5.877 (0.4)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.72 (0.03) 19.71 (0.03) 19.73 (0.04)
g magnitude 19.67 (0.01) 19.67 (0.01) 19.67 (0.01)
r magnitude 20.00 (0.02) 20.00 (0.02) 20.01 (0.02)
i magnitude 20.24 (0.03) 20.24 (0.03) 20.26 (0.03)
z magnitude 20.47 (0.1) 20.47 (0.1) 20.47 (0.1)
G magnitude 19.84 (0.04) 19.89 19.84 (0.004)
BP magnitude 19.84 (0.04) 19.70
RP magnitude 20.18 (0.07) 20.00
Pan g magnitude 19.67 (0.008)
Pan r magnitude 20.06 (0.01)
Pan i magnitude 20.33 (0.03)
Pan z magnitude 20.55 (0.03)
Pan y magnitude
E(B-V) 0.028

* 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.