All names: PG1447+249, TIC 219842904, LB 731, Gaia DR2 1266451513309671296, 2MASS J14493367+2443364, LAMOST J144933.64+244336.2, PG 1447+249, SDSS J144933.64+244336.2, Gaia DR3 1266451513309671296, LAMOST J144933.64+244336.4
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 14 49 33.68 | 14 49 33.65 (0.03) | ||
| Declination | 24 43 36.98 | 24 43 36.34 (0.04) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 36590.0 (950) | ||
| log(g) | [cgs] | 5.50 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.31 (0.08) | 0.57 (0.06) | |
| Distance | [pc] | 3181.67 (792) | 1750.39 (187) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -9.481 (0.1) | -9.169 (0.04) | |
| Proper motion (declination) | [mas/yr] | -9.436 (0.1) | -9.802 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | 15.80 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.37 (0.1) | 16.37 (0.1) | ||
| H magnitude | 16.62 | |||
| K magnitude | 15.70 (0.3) | 15.70 (0.3) | ||
| u magnitude | 15.16 (0.004) | 15.16 (0.004) | ||
| g magnitude | 15.43 (0.003) | 15.43 (0.003) | ||
| r magnitude | 15.95 (0.004) | 15.95 (0.004) | ||
| i magnitude | 16.30 (0.004) | 16.30 (0.004) | ||
| z magnitude | 16.63 (0.01) | 16.63 (0.01) | ||
| G magnitude | 15.70 (0.001) | 15.68 (0.003) | ||
| BP magnitude | 15.49 (0.006) | |||
| RP magnitude | 15.97 (0.004) | |||
| Pan g magnitude | 15.50 (0.004) | |||
| Pan r magnitude | 15.94 (0.004) | |||
| Pan i magnitude | 16.31 (0.001) | |||
| Pan z magnitude | 16.57 (0.004) | |||
| Pan y magnitude | 16.79 (0.008) | |||
| E(B-V) | 0.031 | |||
* 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.