All names: SDSS J000728.91+340341.4, 2MASS J00072887+3403400, PM J00074+3403, USNO-B1.0 1240-00002507, LP 240-29, NLTT 301, Gaia DR2 2875903332533220992, LSPM J0007+3403
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 00 07 28.90 (0.08) | |
| Declination | 34 03 39.69 (0.04) | |
| 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] | 29.34 (0.1) |
| Distance | [pc] | 34.09 (0.1) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | 20.729 (0.1) |
| Proper motion (declination) | [mas/yr] | 199.065 (0.07) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | 17.70 | |
| V magnitude | ||
| R magnitude | 17.30 | |
| I magnitude | ||
| J magnitude | 16.39 (0.1) | |
| H magnitude | 16.25 (0.2) | |
| K magnitude | 15.83 (0.2) | |
| u magnitude | 18.57 (0.02) | |
| g magnitude | 17.63 (0.005) | |
| r magnitude | 17.21 (0.005) | |
| i magnitude | 17.05 (0.006) | |
| z magnitude | 17.00 (0.02) | |
| G magnitude | 17.26 (0.0009) | |
| 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.