All names: USNO-B1.0 1676-00106999, 2MASS J18510561+7738372, SDSS J185106.01+773837.2, PM J18510+7738, LP 25-7, Gaia DR2 2292861388958880640, WIRED J185106.01+773837.1, SDSS J185106.02+773837.2, LSPM J1851+7738, NLTT 47202, SDSS J185106.02+773837.1, SDSS J185106.01+773837.1
| Parameter | Unit | Simbad |
|---|---|---|
| Right ascension | 18 51 05.72 (0.06) | |
| Declination | 77 38 37.50 (0.07) | |
| 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] | 32.90 (0.07) |
| Distance | [pc] | 30.40 (0.06) |
| Composition | ||
| Proper motion (right ascension) | [mas/yr] | 258.521 (0.1) |
| Proper motion (declination) | [mas/yr] | -66.73 (0.1) |
| Variability | ||
| Magnetic | ||
| Bd | [MG] | |
| Infrared excess (disk) | ||
| Binarity | ||
| B magnitude | 18.30 | |
| V magnitude | ||
| R magnitude | 16.40 | |
| I magnitude | ||
| J magnitude | 15.93 (0.08) | |
| H magnitude | 15.80 (0.2) | |
| K magnitude | 14.93 (0.03) | |
| u magnitude | 19.08 (0.03) | |
| g magnitude | 17.60 (0.005) | |
| r magnitude | 16.98 (0.005) | |
| i magnitude | 16.73 (0.005) | |
| z magnitude | 16.65 (0.01) | |
| G magnitude | 17.05 (0.001) | |
| 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.