All names: GALEX J230929.9+283406, 2MASS J23093002+2834059, Bal90100005, TIC 90794040, Gaia EDR3 2845710850610464640, Balloon 90100005, Gaia DR3 2845710850610464640, Gaia DR2 2845710850610464640, LAMOST J230930.02+283405.7, UCAC4 593-142090, UCAC2 41992717
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 23 09 30.04 (0.02) | 23 09 30.00 | 23 09 30.03 (0.02) | ||
| Declination | 28 34 05.72 (0.03) | 28 34 05.00 | 28 34 05.77 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 31890.0 (160) | |||
| log(g) | [cgs] | 5.73 (0.03) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.19 (0.04) | 1.12 (0.05) | 1.19 (0.04) | |
| Distance | [pc] | 839.14 (25) | 888.97 (37) | 839.14 (25) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 8.049 (0.03) | 7.938 (0.09) | 8.049 (0.03) | |
| Proper motion (declination) | [mas/yr] | -3.125 (0.03) | -3.038 (0.07) | -3.125 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.35 (0.04) | ||||
| V magnitude | 14.42 (0.03) | ||||
| R magnitude | 14.89 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 14.96 (0.03) | 14.96 (0.03) | |||
| H magnitude | 15.32 (0.1) | 15.32 (0.1) | |||
| K magnitude | 15.39 (0.2) | 15.39 (0.2) | |||
| u magnitude | 14.11 (0.005) | ||||
| g magnitude | 14.68 (0.001) | 14.30 (0.05) | |||
| r magnitude | 14.65 (0.005) | 14.67 (0.05) | |||
| i magnitude | 14.98 (0.005) | 14.93 (0.09) | |||
| z magnitude | 15.30 (0.007) | ||||
| G magnitude | 14.46 (0.003) | 14.48 (0.0005) | 14.46 (0.003) | ||
| BP magnitude | 14.36 (0.003) | 14.31 (0.004) | |||
| RP magnitude | 14.66 (0.004) | 14.66 (0.002) | |||
| Pan g magnitude | 14.33 (0.002) | ||||
| Pan r magnitude | 14.68 (0.001) | ||||
| Pan i magnitude | 15.00 (0.002) | ||||
| Pan z magnitude | 15.25 (0.007) | ||||
| Pan y magnitude | 15.42 (0.005) | ||||
| 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.