SDSS J184439.58+414712.9

All names: SDSS J184439.58+414712.9, Gaia DR2 2110686739030678528, Gaia EDR3 2110686739030678528, ZTF J184439.57+414712.8, Gaia DR3 2110686739030678528

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Gaia DR2 Simbad Kleinman et al. 2013
Right ascension 18 44 39.58 (0.2) 18 44 39.58 18 44 39.58 (0.3) 18 44 39.58 (0.2) 18 44 39.58
Declination 41 47 12.80 (0.2) 41 47 12.86 41 47 12.80 (0.3) 41 47 12.83 (0.2) 41 47 12.87
Spectral type DAe DAE
Effective temperature [K] 8476.0 (63)
log(g) [cgs] 5.28 (0.2)
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] -0.04 (0.2) -0.45 (0.3)
Distance [pc]
Composition
Proper motion (right ascension) [mas/yr] -1.37334878 (0.3) -1.248760595 (0.6) -1.373 (0.2)
Proper motion (declination) [mas/yr] -1.906348265 (0.3) -2.3788035 (0.7) -1.906 (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 20.72 (0.07) 20.75 (0.08) 20.75 (0.08)
g magnitude 19.79 (0.01) 19.81 (0.02) 19.81 (0.02)
r magnitude 19.82 (0.02) 19.82 (0.02) 19.82 (0.02)
i magnitude 19.95 (0.03) 19.95 (0.03) 19.95 (0.03)
z magnitude 20.24 (0.1) 20.20 (0.1) 20.20 (0.1)
G magnitude 19.48 (0.05) 19.55 19.48 (0.007)
BP magnitude 19.69 (0.05) 19.66
RP magnitude 19.36 (0.05) 19.30
Pan g magnitude 19.46 (0.007)
Pan r magnitude 19.49 (0.01)
Pan i magnitude 19.66 (0.01)
Pan z magnitude 19.79 (0.03)
Pan y magnitude 19.77 (0.1)
E(B-V)

* 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.