Gaia DR2 1937827194563435648

All names: WDJ232058.69+443707.34, Gaia DR3 1937827194563435648, LP 238-41, WDJ232058.69+443707.33, Gaia DR2 1937827194563435648, Gaia EDR3 1937827194563435648, NLTT 56579

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 23 20 59.05 (0.06) 23 20 59.03 23 20 59.05 23 20 58.69 (0.06) 23 20 59.03
Declination 44 37 08.71 (0.06) 44 37 08.67 44 37 08.71 44 37 07.34 (0.06) 44 37 08.67
Spectral type DQ D
Effective temperature [K] 8833.0 8615.0 8115.0 (81)
log(g) [cgs] 8.20 8.11 7.88 (0.02)
Mass [M] 0.718 0.647 0.506 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 1.1070 1.0760
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 11.85 (0.09) 11.83 (0.1) 11.85 11.85 (0.09) 11.83 (0.1)
Distance [pc] 84.38 (0.6) 84.52 (0.8) 84.38 84.38 (0.6) 84.52 (0.8)
Composition
Proper motion (right ascension) [mas/yr] 238.0306928 (0.07) 237.920653 (0.1) 238.031 (0.07) 237.920653
Proper motion (declination) [mas/yr] 85.95125579 (0.07) 85.76968799 (0.1) 85.951 (0.07) 85.76968799
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude 17.50
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 17.50 (0.009) 17.52 17.50 17.50 (0.003) 17.52
BP magnitude 17.55 (0.009) 17.50 17.50
RP magnitude 17.30 (0.01) 17.30 17.30
Pan g magnitude 17.57 (0.005)
Pan r magnitude 17.59 (0.006)
Pan i magnitude 17.68 (0.008)
Pan z magnitude 17.82 (0.007)
Pan y magnitude 17.83 (0.02)
E(B-V) 0.015

* 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.