All names: NLTT 9941, LSPM J0307+0936, USNO-B1.0 0996-00038888, SDSS J030711.89+093647.6, Gaia DR2 14862584004642688, LP 471-53, 2MASS J03071184+0936486, SDSS J030711.89+093647.7
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 03 07 11.85 (0.1) | |
| Declination | 09 36 48.75 (0.09) | |
| Spectral type | DC | |
| 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] | 20.60 (0.1) |
| Distance | [pc] | 48.53 (0.3) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | 159.348 (0.2) |
| Proper motion (declination) | [mas/yr] | -275.197 (0.2) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | 18.40 | |
| V magnitude | ||
| R magnitude | 17.80 | |
| I magnitude | ||
| J magnitude | 16.75 (0.1) | |
| H magnitude | ||
| K magnitude | ||
| u magnitude | 18.54 (0.01) | |
| g magnitude | 17.70 (0.005) | |
| r magnitude | 17.48 (0.006) | |
| i magnitude | 17.47 (0.007) | |
| z magnitude | 17.55 (0.01) | |
| G magnitude | 17.51 (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.