All names: LAMOST J130615.58+485020.8, Feige 73, GSC 03461-02351, Gaia EDR3 1554816510916988544, TIC 198106374, PG 1304+491, PB 71, uvby98 620001073, GALEX J130615.5+485019, 2MASS J13061557+4850209, LAMOST J130615.56+485019.7, PG1304+491, Gaia DR3 1554816510916988544, Gaia DR2 1554816510916988544, SBSS 1304+491A
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 13 06 15.58 (0.02) | 13 06 15.59 | 13 06 15.59 (0.02) | ||
| Declination | 48 50 20.81 (0.02) | 48 50 20.00 | 48 50 20.82 (0.02) | ||
| Spectral type | sdB | sdBO | |||
| Effective temperature | [K] | 32430.0 (290) | |||
| log(g) | [cgs] | 5.68 (0.04) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.42 (0.03) | 1.41 (0.04) | 1.42 (0.03) | |
| Distance | [pc] | 704.82 (14) | 707.46 (19) | 704.82 (14) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -4.863 (0.02) | -4.922 (0.05) | -4.863 (0.02) | |
| Proper motion (declination) | [mas/yr] | -0.454 (0.03) | -0.479 (0.06) | -0.454 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.80 | ||||
| V magnitude | 13.72 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 14.41 (0.03) | 14.41 (0.03) | |||
| H magnitude | 14.50 (0.05) | 14.50 (0.05) | |||
| K magnitude | 14.62 (0.1) | 14.62 (0.1) | |||
| u magnitude | 13.21 (0.004) | ||||
| g magnitude | |||||
| r magnitude | 14.04 (0.008) | ||||
| i magnitude | 14.35 (0.004) | ||||
| z magnitude | 14.71 (0.005) | ||||
| G magnitude | 13.72 (0.003) | 13.73 (0.0004) | 13.72 (0.003) | ||
| BP magnitude | 13.56 (0.003) | 13.49 (0.005) | |||
| RP magnitude | 14.02 (0.004) | 14.02 (0.003) | |||
| Pan g magnitude | 13.52 (0.0007) | ||||
| Pan r magnitude | 13.99 (0.003) | ||||
| Pan i magnitude | 14.36 (0.002) | ||||
| Pan z magnitude | 14.65 (0.003) | ||||
| Pan y magnitude | 14.84 (0.004) | ||||
| 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.