Gaia DR2 2052569921645067008

All names: USNO-B1.0 1278-00407644, Gaia DR3 2052569921645067008, SDSS J192453.32+375113.7, LSPM J1924+3751, WDJ192453.39+375114.11, SDSS J192453.32+375113.6, Gaia DR2 2052569921645067008, J1924+3751, WDJ192453.39+375114.12, Gaia EDR3 2052569921645067008

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Caron et al. 2023 Kilic et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 19 24 53.21 (0.1) 19 24 53.21 19 24 53.21 19 24 53.39 (0.1) 19 24 53.21
Declination 37 51 13.00 (0.1) 37 51 13.03 37 51 13.00 37 51 14.11 (0.1) 37 51 13.03
Spectral type DC DC DC DA: DC
Effective temperature [K] 6249.0 (49) 6212.0 (48) 5950.0 (47) 6513.0 6270.0 6637.0 (134)
log(g) [cgs] 8.25 (0.02) 8.20 (0.02) 8.05 (0.03) 8.34 8.22 8.40 (0.04)
Mass [M] 0.733 (0.02) 0.699 (0.02) 0.603 (0.02) 0.807 0.714 0.849 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 3.5200 3.7200 3.6190
log(H/He) -3
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 12.58 (0.1) 12.24 (0.2) 12.24 (0.2) 12.58 12.58 (0.1) 12.24 (0.2)
Distance [pc] 79.49 (0.9) 81.70 (1) 81.68 (1) 79.49 79.49 (0.9) 81.68 (1)
Composition He He
Proper motion (right ascension) [mas/yr] -135.7848549 (0.1) -136.0216319 (0.3) -135.785 (0.1) -136.0216319
Proper motion (declination) [mas/yr] -69.64943428 (0.2) -69.80008086 (0.4) -69.649 (0.2) -69.80008086
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.20
V magnitude
R magnitude 18.50
I magnitude
J magnitude 18.03 (0.05)
H magnitude
K magnitude
u magnitude 19.80 (0.05) 19.80 (0.04) 19.80 (0.04)
g magnitude 19.00 (0.01) 19.00 (0.01)
r magnitude 18.75 (0.01) 18.75 (0.01)
i magnitude 18.65 (0.01) 18.65 (0.01)
z magnitude 18.72 (0.04) 18.72 (0.04)
G magnitude 18.74 (0.02) 18.76 18.74 18.74 (0.003) 18.76
BP magnitude 19.00 (0.02) 19.02 19.02
RP magnitude 18.37 (0.02) 18.36 18.36
Pan g magnitude 18.99 (0.004) 18.99 (0.004)
Pan r magnitude 18.77 (0.007) 18.77 (0.007)
Pan i magnitude 18.70 (0.01) 18.70 (0.01)
Pan z magnitude 18.72 (0.02) 18.72 (0.02)
Pan y magnitude 18.70 (0.03) 18.70 (0.03)
E(B-V) 0.012

* 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.