All names: PG2318+239, KUV 23186+2354, Gaia DR2 2840755042466571392, 2MASS J23210580+2410390, KUV 597-6, [TFW97] J232105.80+241039.03, TIC 91134285, PG 2318+239, LAMOST J232105.80+241039.0, Gaia DR3 2840755042466571392, SDSS J232105.80+241038.9, Balloon 93738003
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 23 21 05.80 | 23 21 05.80 (0.02) | ||
| Declination | 24 10 39.19 | 24 10 38.95 (0.02) | ||
| Spectral type | sdB+MS | sdB5IIIHe7 | ||
| 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] | 0.04 (0.05) | 0.07 (0.03) | |
| Distance | [pc] | 24813.90 (29801) | 15082.96 (5983) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.652 (0.07) | -1.638 (0.02) | |
| Proper motion (declination) | [mas/yr] | -2.047 (0.05) | -2.047 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 12.83 | |||
| V magnitude | 13.66 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 13.87 (0.03) | 13.87 (0.03) | ||
| H magnitude | 13.96 (0.03) | 13.96 (0.03) | ||
| K magnitude | 14.03 (0.05) | 14.03 (0.05) | ||
| u magnitude | 13.93 (0.004) | 13.93 (0.004) | ||
| g magnitude | 13.71 (0.003) | 13.71 (0.003) | ||
| r magnitude | 13.93 (0.006) | 13.93 (0.006) | ||
| i magnitude | 14.19 (0.009) | 14.19 (0.009) | ||
| z magnitude | 14.33 (0.005) | 14.33 (0.005) | ||
| G magnitude | 13.63 (0.0007) | 13.62 (0.003) | ||
| BP magnitude | 13.54 (0.005) | |||
| RP magnitude | 13.71 (0.003) | |||
| Pan g magnitude | 14.08 (0.1) | |||
| Pan r magnitude | 13.80 (0.008) | |||
| Pan i magnitude | 14.05 (0.003) | |||
| Pan z magnitude | 14.23 (0.0005) | |||
| Pan y magnitude | 14.34 (0.003) | |||
| E(B-V) | 0.055 | |||
* 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.