Gaia DR2 2284456545980836736

All names: USNO-B1.0 1669-00109016, LSPM J2118+7658, Gaia DR3 2284456545980836736, Gaia DR2 2284456545980836736, WDJ211846.18+765859.08, Gaia EDR3 2284456545980836736, WDJ211846.18+765859.09

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 18 46.99 (0.1) 21 18 46.97 21 18 46.99 21 18 46.18 (0.1) 21 18 46.97
Declination 76 58 59.96 (0.1) 76 58 59.93 76 58 59.96 76 58 59.09 (0.1) 76 58 59.93
Spectral type DC: D
Effective temperature [K] 6903.0 6646.0 6053.0 (173)
log(g) [cgs] 8.39 8.29 8.10 (0.04)
Mass [M] 0.844 0.759 0.631 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 3.4970 3.3150
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 13.37 (0.1) 13.66 (0.2) 13.37 13.37 (0.1) 13.66 (0.2)
Distance [pc] 74.80 (0.7) 73.20 (0.9) 74.80 74.80 (0.7) 73.20 (0.9)
Composition
Proper motion (right ascension) [mas/yr] 172.2599674 (0.2) 172.0306398 (0.3) 172.26 (0.2) 172.0306398
Proper motion (declination) [mas/yr] 54.04646297 (0.1) 54.59662143 (0.3) 54.046 (0.1) 54.59662143
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.30
V magnitude
R magnitude 18.20
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 18.40 (0.02) 18.42 18.40 18.40 (0.003) 18.42
BP magnitude 18.63 (0.02) 18.60 18.60
RP magnitude 18.05 (0.01) 18.00 18.00
Pan g magnitude 18.59 (0.007)
Pan r magnitude 18.41 (0.006)
Pan i magnitude 18.37 (0.006)
Pan z magnitude 18.40 (0.009)
Pan y magnitude 18.46 (0.02)
E(B-V) 0.005

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.