Gaia DR2 1209845764198083584

All names: WDJ154018.10+185730.28, SDSS J154018.08+185730.4, Gaia DR3 1209845764198083584, SDSS J154018.07+185730.4, WDJ154018.1+185730.28, Gaia EDR3 1209845764198083584, Gaia DR2 1209845764198083584

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 15 40 18.03 (0.2) 15 40 18.03 15 40 18.03 15 40 18.10 (0.2) 15 40 18.03
Declination 18 57 30.58 (0.2) 18 57 30.57 18 57 30.58 18 57 30.28 (0.2) 18 57 30.57
Spectral type DA DA
Effective temperature [K] 5471.0 5187.0 5565.0 (107)
log(g) [cgs] 7.81 7.61 7.79 (0.06)
Mass [M] 0.477 0.361 0.468 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 2.2010 2.4180
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 9.75 (0.3) 10.17 (0.4) 9.75 9.75 (0.3) 10.17 (0.4)
Distance [pc] 102.60 (3) 98.34 (4) 102.60 102.60 (3) 98.34 (4)
Composition
Proper motion (right ascension) [mas/yr] -58.54790078 (0.3) -58.63055622 (0.6) -58.548 (0.3) -58.63055622
Proper motion (declination) [mas/yr] 18.63095656 (0.2) 18.58954622 (0.4) 18.631 (0.2) 18.58954622
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.77 (0.07) 20.77 (0.07)
g magnitude 19.64 (0.01) 19.64 (0.01)
r magnitude 19.12 (0.01) 19.12 (0.01)
i magnitude 18.95 (0.01) 18.95 (0.01)
z magnitude 18.87 (0.04) 18.87 (0.04)
G magnitude 19.16 (0.03) 19.19 19.16 19.16 (0.003) 19.19
BP magnitude 19.54 (0.03) 19.57 19.57
RP magnitude 18.63 (0.02) 18.62 18.62
Pan g magnitude 19.57 (0.02)
Pan r magnitude 19.14 (0.006)
Pan i magnitude 18.96 (0.006)
Pan z magnitude 18.91 (0.01)
Pan y magnitude 18.83 (0.02)
E(B-V) 0.024

* 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.