All names: Gaia EDR3 1425987175870116864, LAMOST J164959.85+533131.7, PG 1648+536, TIC 274385041, Gaia DR2 1425987175870116864, GALEX J164959.9+533131, UCAC4 718-057272, PG1648+536, Gaia DR3 1425987175870116864, SBSS 1648+536, LAMOST J164959.84+533131.5, 2MASS J16495985+5331318, SBC9 3340
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 16 49 59.85 (0.02) | 16 49 59.86 | 16 49 59.85 (0.02) | ||
| Declination | 53 31 31.37 (0.03) | 53 31 32.70 | 53 31 31.72 (0.03) | ||
| Spectral type | sdB+WD | sdB1VIIHe0 | |||
| Effective temperature | [K] | 31000.0 (740) | |||
| log(g) | [cgs] | 5.60 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.17 (0.02) | 1.13 (0.04) | 1.17 (0.02) | |
| Distance | [pc] | 853.39 (18) | 882.22 (28) | 853.39 (18) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -1.278 (0.03) | -1.235 (0.07) | -1.278 (0.03) | |
| Proper motion (declination) | [mas/yr] | -22.011 (0.03) | -21.954 (0.09) | -22.011 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.84 (0.002) | ||||
| V magnitude | 14.05 (0.003) | ||||
| R magnitude | 14.14 (0.0007) | ||||
| I magnitude | 14.26 (0.004) | ||||
| J magnitude | 14.55 (0.03) | 14.55 (0.03) | |||
| H magnitude | 14.59 (0.05) | 14.59 (0.05) | |||
| K magnitude | 14.79 (0.1) | 14.79 (0.1) | |||
| u magnitude | |||||
| g magnitude | 13.68 (0.06) | ||||
| r magnitude | 14.34 (0.01) | ||||
| i magnitude | 14.60 (0.02) | ||||
| z magnitude | |||||
| G magnitude | 14.01 (0.003) | 14.02 (0.0006) | 14.01 (0.003) | ||
| BP magnitude | 13.89 (0.003) | 13.83 (0.007) | |||
| RP magnitude | 14.23 (0.004) | 14.22 (0.002) | |||
| Pan g magnitude | 13.89 (0.002) | ||||
| Pan r magnitude | 14.26 (0.003) | ||||
| Pan i magnitude | 14.57 (0.002) | ||||
| Pan z magnitude | 14.81 (0.002) | ||||
| Pan y magnitude | 15.00 (0.007) | ||||
| E(B-V) | 0.023 | ||||
* 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.