All names: SDSS J084844.72+124147.7, Gaia EDR3 608091812049315200, PG0845+129, GALEX J084844.9+124147, Gaia DR3 608091812049315200, PG 0845+129, Gaia DR3 608092018209276032, LAMOST J084844.73+124147.9, Gaia DR2 608092018209276032
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 08 48 43.54 (0.3) | 08 48 44.77 | 08 48 43.54 | 08 48 44.72 (0.06) | ||
| Declination | 12 40 30.23 (0.1) | 12 41 49.13 | 12 40 30.23 | 12 41 47.94 (0.03) | ||
| Spectral type | sdOB | DA | sdOB | |||
| Effective temperature | [K] | 6726.0 (244) | ||||
| log(g) | [cgs] | 8.06 (0.08) | ||||
| Mass | [M☉] | 0.63 (0.07) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 7.32 (0.3) | 0.20 (0.09) | 7.32 | 0.31 (0.07) | |
| Distance | [pc] | 136.67 (6) | 4892.37 (2099) | 136.67 | 3267.97 (705) | |
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | -32.568 (0.4) | 7.975 (0.1) | 7.885 (0.07) | ||
| Proper motion (declination) | [mas/yr] | -27.818 (0.3) | -20.693 (0.1) | -20.581 (0.06) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 16.68 | |||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | 13.58 (0.03) | |||||
| H magnitude | 12.99 (0.03) | |||||
| K magnitude | 12.72 (0.03) | |||||
| u magnitude | 15.94 (0.005) | 15.95 (0.02) | ||||
| g magnitude | 16.28 (0.003) | 16.30 (0.02) | ||||
| r magnitude | 16.78 (0.005) | 16.82 (0.03) | ||||
| i magnitude | 17.14 (0.006) | 17.20 (0.2) | ||||
| z magnitude | 17.59 (0.02) | 17.70 (0.9) | ||||
| G magnitude | 19.35 (0.004) | 16.57 (0.002) | 19.35 | 16.54 (0.003) | ||
| BP magnitude | 19.60 (0.05) | 16.32 (0.003) | ||||
| RP magnitude | 19.01 (0.05) | 16.64 (0.07) | ||||
| Pan g magnitude | 16.35 (0.005) | |||||
| Pan r magnitude | 16.73 (0.01) | |||||
| Pan i magnitude | 17.10 (0.08) | |||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.030 | |||||
* 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.