Gaia DR2 274483289649153024

All names: 2MASS J04475996+5546093, USNO-B1.0 1457-00144636, Gaia DR3 274483289649153024, WDJ044759.97+554609.21, Gaia EDR3 274483289649153024, GD 287, TIC 252208692, WDJ044759.97+554609.20, LSPM J0447+5546, Gaia DR2 274483289649153024

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 04 48 00.21 (0.03) 04 48 00.20 04 48 00.21 04 47 59.97 (0.03) 04 48 00.20
Declination 55 46 06.32 (0.02) 55 46 06.41 55 46 06.32 55 46 09.21 (0.02) 55 46 06.41
Spectral type DA DA
Effective temperature [K] 17180.0 19484.0 18135.0 (225)
log(g) [cgs] 7.81 8.05 7.86 (0.01)
Mass [M] 0.516 0.627 0.545 (0.008)
log(Luminosity) [L]
Cooling age [Gyr] 0.0875 0.0872
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 11.30 (0.04) 11.36 (0.05) 11.30 11.30 (0.04) 11.36 (0.05)
Distance [pc] 88.52 (0.3) 88.06 (0.4) 88.52 88.52 (0.3) 88.06 (0.4)
Composition
Proper motion (right ascension) [mas/yr] 122.6038208 (0.04) 122.655447 (0.07) 122.604 (0.04) 122.655447
Proper motion (declination) [mas/yr] -180.5120817 (0.04) -180.414899 (0.05) -180.512 (0.04) -180.414899
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.00
V magnitude
R magnitude 15.50
I magnitude
J magnitude 16.02 (0.07)
H magnitude 16.19 (0.2)
K magnitude 15.65 (0.2)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 15.50 (0.002) 15.52 15.50 15.50 (0.003) 15.52
BP magnitude 15.43 (0.002) 15.41 15.41
RP magnitude 15.66 (0.002) 15.66 15.66
Pan g magnitude 15.36 (0.002)
Pan r magnitude 15.68 (0.003)
Pan i magnitude 15.98 (0.004)
Pan z magnitude 16.23 (0.003)
Pan y magnitude 16.40 (0.005)
E(B-V) 0.003

* 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.