All names: GALEX J091830.0+212429, SDSS J091829.99+212429.1, Gaia EDR3 638435176175135232, SDSS J091829.98+212429.0, Gaia DR2 638435176175135232, Gaia DR3 638435176175135232
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|
Right ascension | 09 18 29.99 (0.6) | 09 18 29.99 | 09 18 29.99 (0.6) | 09 18 29.99 | ||||
Declination | 21 24 28.78 (0.5) | 21 24 29.06 | 21 24 29.28 (0.5) | 21 24 29.10 | ||||
Spectral type | DA | DA | DA | |||||
Effective temperature | [K] | 13625.0 (648) | ||||||
log(g) | [cgs] | 7.86 (0.1) | ||||||
Mass | [M☉] | |||||||
log(Luminosity) | [L☉] | |||||||
Cooling age | [Gyr] | |||||||
log(H/He) | ||||||||
log(C/He) | ||||||||
log(Ca/He) | ||||||||
log(Ca/H) | ||||||||
Parallax | [mas] | 1.61 (0.5) | 1.61 (0.5) | |||||
Distance | [pc] | 620.17 (190) | 620.16 (190) | |||||
Composition | ||||||||
Proper motion (right ascension) | [mas/yr] | 5.109500494 (0.6) | 5.11 (0.6) | |||||
Proper motion (declination) | [mas/yr] | -30.76034398 (0.5) | -30.76 (0.5) | |||||
Variability | ||||||||
Magnetic | ||||||||
Bd | [MG] | |||||||
Infrared excess (disk) | ||||||||
Binarity | ||||||||
B magnitude | ||||||||
V magnitude | ||||||||
R magnitude | ||||||||
I magnitude | ||||||||
J magnitude | ||||||||
H magnitude | ||||||||
K magnitude | ||||||||
u magnitude | 20.06 (0.04) | 20.04 (0.05) | 20.04 (0.05) | |||||
g magnitude | 19.58 (0.01) | 19.60 (0.02) | ||||||
r magnitude | 19.82 (0.02) | 19.83 (0.03) | 19.83 (0.03) | |||||
i magnitude | 20.08 (0.03) | 20.09 (0.03) | 20.09 (0.03) | |||||
z magnitude | 20.43 (0.1) | 20.45 (0.1) | 20.45 (0.1) | |||||
G magnitude | 19.73 (0.04) | 19.73 (0.004) | ||||||
BP magnitude | 19.78 (0.04) | |||||||
RP magnitude | 19.66 (0.07) | |||||||
Pan g magnitude | 19.66 (0.02) | |||||||
Pan r magnitude | 19.83 (0.01) | |||||||
Pan i magnitude | 19.99 (0.04) | |||||||
Pan z magnitude | 20.31 (0.05) | |||||||
Pan y magnitude | ||||||||
E(B-V) | 0.036 |
* Constant surface field
Spectra without link are available upon request
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.