All names: USNO-A2.0 0900-00649651, Gaia DR3 2499228893878451072, SDSS J024647.84+005438.7, GALEX 2417696464603972851, SDSS J024647.85+005438.4, Gaia EDR3 2499228893878451072
| Parameter | Unit | Gaia EDR3 | Vincent et al. 2023 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 02 46 47.85 (0.3) | 02 46 47.85 (0.5) | |||
| Declination | 00 54 38.14 (0.3) | 00 54 38.68 (0.5) | |||
| Spectral type | DA | 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] | 2.65 (0.4) | 3.40 (0.7) | ||
| Distance | [pc] | 377.69 (58) | 294.31 (58) | ||
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 3.162 (0.4) | 3.451 (0.9) | ||
| Proper motion (declination) | [mas/yr] | -34.188 (0.4) | -33.81 (1) | ||
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 18.90 (0.3) | ||||
| V magnitude | |||||
| R magnitude | 19.00 (0.3) | ||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 19.89 (0.03) | ||||
| g magnitude | 19.59 (0.01) | ||||
| r magnitude | 19.59 (0.01) | ||||
| i magnitude | 19.62 (0.02) | ||||
| z magnitude | 19.82 (0.07) | ||||
| G magnitude | 19.55 (0.005) | 19.61 (0.008) | |||
| BP magnitude | 19.57 (0.07) | ||||
| RP magnitude | 19.41 (0.05) | ||||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.024 | ||||
* 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.