Gaia DR2 818250334278307456

All names: SDSS J092655.16+442154.9, USNO-B1.0 1343-00211781, Gaia DR3 818250334278307456, LSPM J0926+4421, Gaia DR2 818250334278307456, SDSS J092655.16+442155.0, NLTT 21750, Gaia EDR3 818250334278307456, LP 211-6, GALEX J092655.2+442154, WDJ092655.13+442155.52

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Vincent et al. 2023
Right ascension 09 26 55.37 (0.1) 09 26 55.36 09 26 55.37 09 26 55.13 (0.1) 09 26 55.36
Declination 44 21 51.43 (0.08) 44 21 51.56 44 21 51.43 44 21 55.52 (0.08) 44 21 51.56
Spectral type DC DC DC
Effective temperature [K] 6096.0 5845.0 5473.0 (130)
log(g) [cgs] 8.07 7.92 7.85 (0.03)
Mass [M] 0.629 0.521 0.485 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 2.5000 2.4390
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 14.51 (0.1) 14.59 (0.2) 14.51 14.51 (0.1) 14.59 (0.2)
Distance [pc] 68.93 (0.6) 68.56 (0.9) 68.93 68.93 (0.6) 68.56 (0.9)
Composition
Proper motion (right ascension) [mas/yr] 160.7324933 (0.1) 160.8432217 (0.2) 160.732 (0.1) 160.8432217
Proper motion (declination) [mas/yr] -255.6163526 (0.1) -255.7629721 (0.2) -255.616 (0.1) -255.7629721
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.70
V magnitude
R magnitude 17.90
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.31 (0.02) 19.31 (0.03)
g magnitude 18.55 (0.008) 18.53 (0.008)
r magnitude 18.20 (0.008) 18.19 (0.007)
i magnitude 18.11 (0.009) 18.07 (0.008)
z magnitude 18.10 (0.02) 18.09 (0.02)
G magnitude 18.22 (0.02) 18.24 18.22 18.22 (0.003) 18.24
BP magnitude 18.49 (0.02) 18.50 18.50
RP magnitude 17.80 (0.01) 17.81 17.81
Pan g magnitude 18.55 (0.007)
Pan r magnitude 18.21 (0.005)
Pan i magnitude 18.11 (0.005)
Pan z magnitude 18.12 (0.007)
Pan y magnitude 18.12 (0.01)
E(B-V) 0.002

* 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.