All names: SDSS J120957.94+410403.0, SDSS J120957.93+410403.0, Gaia DR2 1536246618515963008, Gaia EDR3 1536246618516881664, GALEX J120957.9+410402, Gaia DR3 1536246618516881664
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 09 57.84 (0.3) | 12 09 57.94 | 12 09 57.85 (1) | 12 09 57.97 (0.3) | 12 09 57.94 | ||||
| Declination | 41 04 02.51 (0.3) | 41 04 03.03 | 41 04 02.52 (1) | 41 04 03.19 (0.3) | 41 04 03.04 | ||||
| Spectral type | DA | DA | DA | ||||||
| Effective temperature | [K] | 9949.0 (124) | |||||||
| log(g) | [cgs] | 7.85 (0.2) | |||||||
| Mass | [M☉] | 0.523 (0.09) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 2.43 (0.6) | 0.30 (2) | 2.43 (0.6) | |||||
| Distance | [pc] | 411.68 (106) | 3355.92 (28043) | 411.68 (106) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -89.30360135 (0.6) | -92.49526005 (2) | -89.304 (0.6) | |||||
| Proper motion (declination) | [mas/yr] | -43.06557392 (0.6) | -49.19018065 (2) | -43.066 (0.6) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 20.95 (0.07) | 20.94 (0.07) | 20.88 (0.08) | ||||||
| g magnitude | 20.32 (0.02) | 20.32 (0.02) | 20.36 (0.03) | ||||||
| r magnitude | 20.43 (0.03) | 20.44 (0.03) | 20.45 (0.03) | ||||||
| i magnitude | 20.53 (0.04) | 20.56 (0.04) | 20.56 (0.04) | ||||||
| z magnitude | 20.68 (0.2) | 20.70 (0.2) | 20.70 (0.2) | ||||||
| G magnitude | 20.38 (0.08) | 20.43 | 20.38 (0.006) | ||||||
| BP magnitude | 20.50 (0.08) | 20.35 | |||||||
| RP magnitude | 20.32 (0.1) | 19.97 | |||||||
| Pan g magnitude | 20.40 (0.03) | ||||||||
| Pan r magnitude | 20.27 (0.02) | ||||||||
| Pan i magnitude | 20.69 (0.02) | ||||||||
| Pan z magnitude | 20.53 (0.1) | ||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.018 | ||||||||
* 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.