All names: WISE J042409.68+083317.0, BPS BS 17571-0069, GALAH 161106003601330, Gaia DR3 3299455110137611776, uvby98 620004012, LAMOSTJ042409.66+083317.2, LAMOST J042409.66+083317.2, Gaia DR1 3299455105841141888, 2MASS J04240968+0833172, UCAC4 493-007441, FB 37, HIP 20547, HZ 12, Cl* Melotte 25 HZ 12, TIC 372920238, WISEA J042409.69+083316.9, GSC 00668-01204, Gaia DR2 3299455110137611776, TYC 668-1204-1, HIC 20547, Renson 7130, GALAH 161107002801330
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 24 09.66 | 04 24 09.69 (0.03) | ||
| Declination | 08 33 17.29 | 08 33 17.13 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 26797.0 (187) | ||
| log(g) | [cgs] | 5.24 (0.02) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 2.01 (0.06) | 1.86 (0.03) | |
| Distance | [pc] | 497.81 (15) | 538.79 (9) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 16.518 (0.09) | 16.559 (0.04) | |
| Proper motion (declination) | [mas/yr] | -18.973 (0.07) | -19.05 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 12.58 (0.03) | |||
| V magnitude | 12.54 (0.01) | |||
| R magnitude | 12.79 (0.05) | |||
| I magnitude | ||||
| J magnitude | 12.60 (0.03) | 12.60 (0.03) | ||
| H magnitude | 12.63 (0.03) | 12.63 (0.03) | ||
| K magnitude | 12.68 (0.03) | 12.68 (0.03) | ||
| u magnitude | 13.86 (0.007) | |||
| g magnitude | 12.55 (0.001) | 12.47 (0.03) | ||
| r magnitude | 12.76 (0.001) | 12.65 (0.04) | ||
| i magnitude | 12.97 (0.001) | 12.86 (0.04) | ||
| z magnitude | 13.49 (0.008) | |||
| G magnitude | 12.53 (0.0004) | 12.51 (0.003) | ||
| BP magnitude | 12.47 (0.007) | |||
| RP magnitude | 12.53 (0.002) | |||
| Pan g magnitude | 12.88 | |||
| Pan r magnitude | 12.99 | |||
| Pan i magnitude | 13.08 | |||
| Pan z magnitude | 13.05 (0.02) | |||
| Pan y magnitude | 13.14 (0.004) | |||
| E(B-V) | 0.228 | |||
* 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.