All names: LP 149-9, LSPM J2357+5057, Gaia DR2 1944042802521121024, SDSS J235713.38+505717.1, USNO-B1.0 1409-00510776, SDSS J235713.38+505717.0, NLTT 58516
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 23 57 13.39 (0.1) | |
| Declination | 50 57 17.02 (0.1) | |
| Spectral type | DA | |
| 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] | 15.33 (0.2) |
| Distance | [pc] | 65.25 (0.9) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | 332.91 (0.3) |
| Proper motion (declination) | [mas/yr] | 70.367 (0.2) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | 18.70 | |
| V magnitude | ||
| R magnitude | 18.20 | |
| I magnitude | ||
| J magnitude | ||
| H magnitude | ||
| K magnitude | ||
| u magnitude | 20.24 (0.07) | |
| g magnitude | 19.06 (0.01) | |
| r magnitude | 18.47 (0.01) | |
| i magnitude | 20.01 (0.07) | |
| z magnitude | 19.27 (0.1) | |
| G magnitude | 18.54 (0.002) | |
| BP magnitude | ||
| RP magnitude | ||
| Pan g magnitude | ||
| Pan r magnitude | ||
| Pan i magnitude | ||
| Pan z magnitude | ||
| Pan y magnitude |
* 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 (LANL). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.