All names: GALEXJ20093+0951, UCAC2 35292991, Gaia EDR3 4299679566621818880, GALEX J200918.2+095143, Gaia DR3 4299679566621818880, SDSS J200918.17+095142.4, Gaia DR2 4299679566621818880, TIC 366541483, UCAC4 500-129555, 2MASS J20091816+0951423
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 09 18.17 (0.02) | 20 09 18.26 | 20 09 18.17 (0.02) | ||
| Declination | 09 51 42.23 (0.02) | 09 51 43.49 | 09 51 42.43 (0.02) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 27000.0 (570) | |||
| log(g) | [cgs] | 5.60 (0.08) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.05 (0.03) | 1.11 (0.05) | 1.05 (0.03) | |
| Distance | [pc] | 951.47 (28) | 899.52 (38) | 951.47 (28) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -2.827 (0.04) | -2.81 (0.07) | -2.827 (0.04) | |
| Proper motion (declination) | [mas/yr] | -12.288 (0.03) | -12.445 (0.06) | -12.288 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.32 (0.04) | ||||
| V magnitude | 14.36 (0.02) | ||||
| R magnitude | 14.74 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 14.93 (0.04) | 14.93 (0.04) | |||
| H magnitude | 15.12 (0.08) | 15.12 (0.08) | |||
| K magnitude | 15.42 (0.2) | 15.42 (0.2) | |||
| u magnitude | 14.18 (0.003) | 14.21 (0.02) | |||
| g magnitude | 14.22 (0.002) | 14.24 (0.009) | |||
| r magnitude | 14.66 (0.003) | 14.67 (0.01) | |||
| i magnitude | 14.96 (0.003) | 14.97 (0.02) | |||
| z magnitude | 15.23 (0.005) | 15.25 (0.01) | |||
| G magnitude | 14.47 (0.003) | 14.48 (0.0004) | 14.47 (0.003) | ||
| BP magnitude | 14.36 (0.003) | 14.34 (0.005) | |||
| RP magnitude | 14.66 (0.004) | 14.66 (0.002) | |||
| Pan g magnitude | 14.33 (0.008) | ||||
| Pan r magnitude | 14.69 (0.001) | ||||
| Pan i magnitude | 15.01 (0.002) | ||||
| Pan z magnitude | 15.26 (0.004) | ||||
| Pan y magnitude | 15.42 (0.004) | ||||
| E(B-V) | 0.085 | ||||
* 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.