All names: GD 254, USNO-B1.0 1192-00599413, LAMOST J235408.04+291623.1, Gaia DR2 2867185652730509952, WISE J235408.15+291623.1, SDSS J235408.16+291623.2, TIC 423975313, LSPM J2354+2916, WISEA J235408.16+291623.0, LAMOST J235408.17+291623.3, 2MASS J23540804+2916231
| Parameter | Unit | Guo et al. 2015 | Simbad |
|---|---|---|---|
| Right ascension | 23 54 08.03 (129) | ||
| Declination | 29 16 23.52 (162) | ||
| Spectral type | DB+M | DB+M2 | |
| Effective temperature | [K] | ||
| log(g) | [cgs] | ||
| Mass | [M☉] | ||
| log(Luminosity) | [L☉] | ||
| Cooling age | [Gyr] | ||
| log(H/He) | |||
| log(C/He) | |||
| log(Ca/He) | |||
| log(Ca/H) | |||
| Parallax | [mas] | ||
| Distance | [pc] | ||
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | 152.0 (3) | |
| Proper motion (declination) | [mas/yr] | -10.0 (4) | |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | 17.10 | ||
| V magnitude | |||
| R magnitude | 15.40 | ||
| I magnitude | |||
| J magnitude | 13.57 (0.03) | ||
| H magnitude | 12.98 (0.03) | ||
| K magnitude | 12.79 (0.03) | ||
| u magnitude | 16.75 (0.007) | ||
| g magnitude | 16.66 (0.004) | ||
| r magnitude | 16.47 (0.004) | ||
| i magnitude | 15.63 (0.004) | ||
| z magnitude | 14.96 (0.005) | ||
| G magnitude | 16.45 (0.01) | ||
| BP magnitude | |||
| RP magnitude | |||
| Pan g magnitude | |||
| Pan r magnitude | |||
| Pan i magnitude | |||
| Pan z magnitude | |||
| Pan y magnitude | |||
| E(B-V) | |||
* 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.