All names: Gaia DR2 2845777233625133440, TIC 91032615, GALEX J231628.5+280718, 2MASS J23162857+2807183, UCAC4 591-138427, KUV23140+2751, SDSS J231628.57+280718.3, KUV 23140+2751, Gaia DR3 2845777233625133440
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 23 16 28.56 | 23 16 28.57 (0.02) | ||
| Declination | 28 07 19.26 | 28 07 18.35 (0.02) | ||
| Spectral type | sdB | |||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.64 (0.05) | 0.69 (0.02) | |
| Distance | [pc] | 1555.45 (109) | 1457.09 (52) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.233 (0.1) | 2.184 (0.02) | |
| Proper motion (declination) | [mas/yr] | -3.731 (0.06) | -3.766 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.98 (0.02) | |||
| V magnitude | 14.80 (0.08) | |||
| R magnitude | 14.83 (0.06) | |||
| I magnitude | ||||
| J magnitude | 14.20 (0.03) | 14.20 (0.03) | ||
| H magnitude | 13.97 (0.03) | 13.97 (0.03) | ||
| K magnitude | 13.88 (0.05) | 13.88 (0.05) | ||
| u magnitude | 15.14 (0.004) | |||
| g magnitude | 14.86 (0.004) | 14.81 (0.04) | ||
| r magnitude | 14.85 (0.003) | 14.80 (0.03) | ||
| i magnitude | 14.86 (0.004) | 14.64 (0.1) | ||
| z magnitude | 14.88 (0.005) | |||
| G magnitude | 14.76 (0.0007) | 14.74 (0.003) | ||
| BP magnitude | 14.84 (0.004) | |||
| RP magnitude | 14.52 (0.003) | |||
| Pan g magnitude | 14.85 (0.003) | |||
| Pan r magnitude | 14.84 (0.0005) | |||
| Pan i magnitude | 14.86 (0.005) | |||
| Pan z magnitude | 14.91 (0.002) | |||
| Pan y magnitude | 14.93 (0.002) | |||
| E(B-V) | 0.058 | |||
* 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.