All names: GALEX J234947.6+384441, TYC 3232-1319-1, UCAC3 258-271866, FBS B 202, USNO-B1.0 1287-00528580, [VKN2011] J234947.8+384440, FBS2347+385, TIC 455755305, 2MASS J23494764+3844415, UCAC2 45436690, GALEX J234947.5+384440, SDSS J234947.63+384441.5, GSC 03232-01319, Gaia DR2 2881551562420806784, FBS 2347+385, GSC2 N0010313149, GALEX J234947.7+384440, Gaia DR3 2881551562420806784
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 23 49 47.71 | 23 49 47.65 (0.03) | ||
| Declination | 38 44 42.29 | 38 44 41.55 (0.02) | ||
| Spectral type | sdB+WD | sdB | ||
| Effective temperature | [K] | 23770.0 (350) | ||
| log(g) | [cgs] | 5.38 (0.06) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 4.01 (0.06) | 3.87 (0.03) | |
| Distance | [pc] | 249.53 (4) | 258.24 (2) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.203 (0.09) | -2.232 (0.04) | |
| Proper motion (declination) | [mas/yr] | 1.135 (0.07) | 1.108 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 11.65 (0.07) | |||
| V magnitude | 11.73 (0.1) | |||
| R magnitude | 12.03 (0.06) | |||
| I magnitude | ||||
| J magnitude | 12.04 (0.02) | 12.04 (0.02) | ||
| H magnitude | 12.16 (0.03) | 12.16 (0.03) | ||
| K magnitude | 12.18 (0.02) | 12.18 (0.02) | ||
| u magnitude | 11.84 (0.001) | 12.00 (0.002) | ||
| g magnitude | 11.73 (0.001) | |||
| r magnitude | 12.03 (0.001) | |||
| i magnitude | 12.34 (0.002) | |||
| z magnitude | 13.76 (0.01) | 13.10 (0.005) | ||
| G magnitude | 11.73 (0.0005) | 11.72 (0.003) | ||
| BP magnitude | 11.63 (0.004) | |||
| RP magnitude | 11.84 (0.001) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | 14.27 (0.003) | |||
| Pan z magnitude | 12.67 (0.001) | |||
| Pan y magnitude | 12.57 (0.001) | |||
| E(B-V) | 0.054 | |||
* 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.