Gaia DR2 2149253075743572224

All names: WDJ182147.11+550906.69, Gaia EDR3 2149253075743572224, Gaia DR3 2149253075743572224, WDJ182147.11+550906.70, J1821+5509, Gaia DR2 2149253075743572224

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 McCleery et al. 2020 Tremblay et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 18 21 47.23 (0.05) 18 21 47.23 (0.07) 18 21 47.23 18 21 47.23 18 21 47.11 (0.05) 18 21 47.23
Declination 55 09 07.45 (0.05) 55 09 07.42 (0.07) 55 09 07.42 55 09 07.45 55 09 06.70 (0.05) 55 09 07.42
Spectral type DA DA DA DA DC: DA
Effective temperature [K] 4955.0 (73) 5045.0 (29) 4887.6 (56) 4890.0 (60) 4969.0 4641.0 5068.0 (30)
log(g) [cgs] 7.89 (0.06) 7.97 (0.01) 7.86 (0.05) 7.86 (0.05) 7.91 7.67 7.97 (0.02)
Mass [M] 0.515 (0.03) 0.56 (0.01) 0.524 0.39 0.561 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 5.1900 4.7030 3.5910
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] 32.32 (0.06) 32.32 (0.06) 32.37 (0.07) 32.37 (0.07) 32.37 (0.07) 32.32 32.32 (0.06) 32.37 (0.07)
Distance [pc] 30.94 (0.05) 30.94 (0.06) 30.89 (0.07) 30.89 (0.06) 30.89 (0.06) 30.94 30.94 (0.05) 30.89 (0.06)
Composition H H
Proper motion (right ascension) [mas/yr] 63.94874208 (0.09) 63.91114573 (0.2) 63.949 (0.09) 63.91114573
Proper motion (declination) [mas/yr] 46.86783057 (0.07) 47.03401074 (0.1) 46.868 (0.07) 47.03401074
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 15.97 (0.01)
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 17.23 (0.01) 17.25 17.25 17.23 17.23 (0.003) 17.25
BP magnitude 17.68 (0.01) 17.71 17.71
RP magnitude 16.56 (0.01) 16.57 16.57
Pan g magnitude 17.78 (0.02) 17.78 (0.03)
Pan r magnitude 17.22 (0.005) 17.22 (0.004)
Pan i magnitude 16.96 (0.005) 16.96 (0.004)
Pan z magnitude 16.85 (0.004) 16.85 (0.004)
Pan y magnitude 16.74 (0.008) 16.74 (0.008)
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.