All names: Gaia DR3 612302151309751552, Gaia DR2 612302151309751552, WD 0851+184, SDSS J085441.15+181412.3, SDSS J085441.14+181412.2, USNO-B1.0 1082-00196249, Gaia EDR3 612302151309751552
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 54 41.18 (0.3) | 08 54 41.18 (0.3) | 08 54 41.18 | 08 54 41.14 (0.3) | 08 54 40.85 | |||
| Declination | 18 14 12.07 (0.1) | 18 14 12.08 (0.2) | 18 14 12.07 | 18 14 12.35 (0.1) | 18 14 14.64 | |||
| Spectral type | DC | DC | ? | DC | ||||
| Effective temperature | [K] | 8289.0 (330) | ||||||
| log(g) | [cgs] | 7.79 (0.1) | ||||||
| Mass | [M☉] | 0.459 (0.08) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 4.81 (0.3) | 4.51 (0.4) | 4.81 | 4.81 (0.3) | |||
| Distance | [pc] | 208.01 (12) | 221.80 (18) | 208.01 | 208.01 (12) | |||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 37.8317129 (0.3) | 37.84201168 (0.7) | 37.832 (0.3) | ||||
| Proper motion (declination) | [mas/yr] | -17.73161535 (0.3) | -17.58645013 (0.5) | -17.732 (0.3) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 19.70 | |||||||
| V magnitude | ||||||||
| R magnitude | 19.40 | |||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 19.49 (0.03) | |||||||
| g magnitude | 19.31 (0.01) | |||||||
| r magnitude | 19.31 (0.01) | |||||||
| i magnitude | 19.43 (0.02) | |||||||
| z magnitude | 19.55 (0.07) | |||||||
| G magnitude | 19.26 (0.02) | 19.30 | 19.26 | 19.26 (0.004) | ||||
| BP magnitude | 19.38 (0.02) | 19.27 | ||||||
| RP magnitude | 19.09 (0.03) | 19.00 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.012 | |||||||
* 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.