All names: WISEA J090930.14+544555.7, Gaia DR2 1023900519533114112, Gaia DR3 1023900519533114112, WISE J090930.18+544555.7, SBSS0905+549, SBSS 0905+549, TIC 287084858, UCAC4 724-048200, GALEX J090930.1+544555, SDSS J090930.16+544555.6, 2MASS J09093014+5445557
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 09 09 30.10 | 09 09 30.16 (0.03) | ||
| Declination | 54 45 55.59 | 54 45 55.64 (0.03) | ||
| Spectral type | sdB | 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] | 0.07 (0.07) | 0.07 (0.05) | |
| Distance | [pc] | 13947.00 (13247) | 13458.95 (8423) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.427 (0.09) | -0.382 (0.04) | |
| Proper motion (declination) | [mas/yr] | -1.725 (0.08) | -1.708 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.45 (0.04) | |||
| V magnitude | 16.47 (0.01) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.16 (0.1) | 16.16 (0.1) | ||
| H magnitude | 15.78 (0.2) | 15.78 (0.2) | ||
| K magnitude | 15.53 | |||
| u magnitude | 17.45 (0.009) | 17.46 (0.009) | ||
| g magnitude | 16.27 (0.004) | 16.27 (0.004) | ||
| r magnitude | 16.41 (0.004) | 16.41 (0.004) | ||
| i magnitude | 16.56 (0.005) | 16.56 (0.005) | ||
| z magnitude | 16.68 (0.01) | 16.68 (0.01) | ||
| G magnitude | 16.35 (0.0009) | 16.32 (0.003) | ||
| BP magnitude | 16.39 (0.003) | |||
| RP magnitude | 16.25 (0.004) | |||
| Pan g magnitude | 16.30 (0.002) | |||
| Pan r magnitude | 16.42 (0.006) | |||
| Pan i magnitude | 16.60 (0.003) | |||
| Pan z magnitude | 16.70 (0.007) | |||
| Pan y magnitude | 16.72 (0.007) | |||
| E(B-V) | 0.026 | |||
* 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.