All names: SDSS J234901.50+391916.0, GALEX J234901.5+391916, SDSS J234901.49+391915.9, Gaia DR3 1920815859896915072, Gaia EDR3 1920815859896915072, Gaia DR2 1920815859896915072
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 49 01.51 (1) | 23 49 01.51 | 23 49 01.51 (2) | 23 49 01.51 (1) | 23 49 01.50 | ||||
| Declination | 39 19 15.96 (0.9) | 39 19 15.95 | 39 19 15.96 (3) | 39 19 15.94 (0.9) | 39 19 16.00 | ||||
| Spectral type | DA | DA | DA | ||||||
| Effective temperature | [K] | 11765.0 (730) | |||||||
| log(g) | [cgs] | 8.47 (0.3) | |||||||
| Mass | [M☉] | 0.888 (0.2) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 2.22 (2) | 2.22 (2) | ||||||
| Distance | [pc] | 449.65 (311) | 449.66 (311) | ||||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 3.966348948 (1) | 3.966 (1) | ||||||
| Proper motion (declination) | [mas/yr] | 1.510294732 (2) | 1.51 (2) | ||||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 21.07 (0.08) | 21.53 (0.2) | 21.53 (0.2) | ||||||
| g magnitude | 20.75 (0.03) | 20.73 (0.03) | 20.73 (0.03) | ||||||
| r magnitude | 20.80 (0.04) | 20.87 (0.05) | 20.87 (0.05) | ||||||
| i magnitude | 20.88 (0.05) | 21.18 (0.09) | 21.18 (0.09) | ||||||
| z magnitude | 21.00 (0.2) | 21.69 (0.5) | 21.69 (0.5) | ||||||
| G magnitude | 20.76 (0.1) | 20.82 | 20.76 (0.01) | ||||||
| BP magnitude | 20.61 (0.1) | 20.89 | |||||||
| RP magnitude | 20.18 (0.2) | 20.36 | |||||||
| Pan g magnitude | 20.71 (0.02) | ||||||||
| Pan r magnitude | 20.77 (0.07) | ||||||||
| Pan i magnitude | 20.89 (0.04) | ||||||||
| Pan z magnitude | 21.09 (0.08) | ||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.087 | ||||||||
* 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.