All names: Gaia DR3 927227948229851392, Gaia DR2 927227948229851392, SDSSJ074852.07+454903.9, SDSS J074852.07+454903.8, Gaia EDR3 927227948229851392, 2MASS J07485208+4549037, TIC 98972234, SDSS J074852.07+454903.83, LAMOST J074852.07+454903.7
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 07 48 52.07 (0.04) | 07 48 52.07 | 07 48 52.07 | 07 48 52.07 | 07 48 52.07 (0.05) | 07 48 52.08 (0.04) | 07 48 52.07 | ||||
| Declination | 45 49 03.72 (0.04) | 45 49 03.87 | 45 49 03.87 | 45 49 03.90 | 45 49 03.72 (0.05) | 45 49 03.80 (0.04) | 45 49 03.90 | ||||
| Spectral type | sdB | DAB | sdB | SD_auto | |||||||
| Effective temperature | [K] | 27217.0 (1129) | 30361.0 (55) | 28571.0 (146) | |||||||
| log(g) | [cgs] | 5.51 (0.2) | 5.55 (0.01) | 5.35 (0.04) | |||||||
| Mass | [M☉] | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 0.47 (0.05) | 0.39 (0.07) | 0.39 (0.07) | 0.47 (0.05) | ||||||
| Distance | [pc] | 2140.47 (213) | 2592.02 (484) | 2592.02 (484) | 2140.41 (213) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -4.040595869 (0.05) | -4.166 (0.1) | -4.166 (0.1) | -4.041 (0.05) | -3.2 | |||||
| Proper motion (declination) | [mas/yr] | -5.123103452 (0.04) | -4.947 (0.09) | -4.947 (0.09) | -5.123 (0.04) | -4.8 | |||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.75 (0.1) | 16.75 (0.1) | |||||||||
| H magnitude | 15.81 | ||||||||||
| K magnitude | 17.00 | ||||||||||
| u magnitude | 15.70 (0.005) | 15.70 (0.005) | 15.70 (0.005) | 15.70 (0.02) | 15.70 (0.005) | 15.68 (0.02) | |||||
| g magnitude | 15.83 (0.004) | 15.83 (0.004) | 15.83 (0.004) | 15.86 (0.02) | 15.83 (0.004) | 15.83 (0.02) | |||||
| r magnitude | 16.25 (0.004) | 16.25 (0.004) | 16.25 (0.004) | 16.26 (0.01) | 16.25 (0.004) | 16.25 (0.01) | |||||
| i magnitude | 16.57 (0.005) | 16.57 (0.005) | 16.57 (0.005) | 16.58 (0.02) | 16.57 (0.005) | 16.55 (0.02) | |||||
| z magnitude | 16.87 (0.01) | 16.87 (0.01) | 16.87 (0.01) | 16.87 (0.02) | 16.87 (0.01) | 16.86 (0.02) | |||||
| G magnitude | 16.05 (0.004) | 16.07 (0.002) | 16.07 | 16.05 (0.003) | |||||||
| BP magnitude | 15.94 (0.004) | 15.89 (0.009) | 15.89 | ||||||||
| RP magnitude | 16.27 (0.003) | 16.26 (0.005) | 16.26 | ||||||||
| Pan g magnitude | 15.90 (0.007) | 15.90 (0.007) | |||||||||
| Pan r magnitude | 16.28 (0.001) | 16.27 (0.001) | |||||||||
| Pan i magnitude | 16.59 (0.003) | 16.59 (0.003) | |||||||||
| Pan z magnitude | 16.87 (0.004) | 16.87 (0.004) | |||||||||
| Pan y magnitude | 17.03 (0.008) | 17.03 (0.008) | |||||||||
| E(B-V) | 0.042 | ||||||||||
* 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.