Gaia DR2 1799850987927155456

All names: Gaia DR3 1799850987927155456, SDSS J214940.68+264756.2, Gaia EDR3 1799850987927155456, SDSS J214940.68+264756.3, WDJ214940.68+264756.49, WDJ214940.68+264756.50, Gaia DR2 1799850987927155456

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 21 49 40.68 (0.1) 21 49 40.68 21 49 40.68 21 49 40.69 (0.1) 21 49 40.68
Declination 26 47 56.10 (0.2) 26 47 56.11 26 47 56.10 26 47 56.51 (0.2) 26 47 56.11
Spectral type DC: D
Effective temperature [K] 7091.0 6873.0 6267.0 (185)
log(g) [cgs] 8.38 8.30 8.15 (0.04)
Mass [M] 0.838 0.766 0.668 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 3.2190 3.0430
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 12.28 (0.2) 11.95 (0.2) 12.28 12.28 (0.2) 11.95 (0.2)
Distance [pc] 81.41 (1) 83.66 (2) 81.41 81.41 (1) 83.66 (2)
Composition
Proper motion (right ascension) [mas/yr] -6.419824112 (0.2) -6.129765107 (0.5) -6.42 (0.2) -6.129765107
Proper motion (declination) [mas/yr] -25.89342491 (0.2) -25.05286818 (0.4) -25.893 (0.2) -25.05286818
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.32 (0.03) 19.32 (0.03)
g magnitude 18.76 (0.008) 18.76 (0.008)
r magnitude 18.59 (0.01) 18.59 (0.01)
i magnitude 18.58 (0.01) 18.58 (0.01)
z magnitude 18.63 (0.05) 18.63 (0.05)
G magnitude 18.56 (0.02) 18.58 18.56 18.56 (0.003) 18.58
BP magnitude 18.80 (0.02) 18.80 18.80
RP magnitude 18.24 (0.02) 18.26 18.26
Pan g magnitude 18.75 (0.006)
Pan r magnitude 18.59 (0.007)
Pan i magnitude 18.57 (0.006)
Pan z magnitude 18.61 (0.01)
Pan y magnitude 18.67 (0.06)
E(B-V) 0.016

* 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.