All names: SDSS J201204.84-113304.4, Gaia DR3 6880652408378278656, SDSS J201204.85-113304.5, Gaia DR2 6880652408378278656, Gaia EDR3 6880652167860107648, SDSSJ201204.85-113304.5, 2MASS J20120486-1133042, GALEX J201204.8-113304, TIC 178811207
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 12 03.62 (0.6) | 20 12 04.85 | 20 12 04.85 (0.05) | ||
| Declination | -11 33 32.01 (0.4) | -11 33 04.50 | -11 33 04.41 (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] | 1.19 (0.7) | 0.07 (0.07) | 0.15 (0.07) | |
| Distance | [pc] | 841.11 (468) | 13623.98 (13290) | 6849.32 (3049) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -2.267 (0.7) | -11.635 (0.1) | -11.673 (0.06) | |
| Proper motion (declination) | [mas/yr] | -5.005 (0.5) | -15.534 (0.07) | -15.523 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.22 (0.1) | 16.22 (0.1) | |||
| H magnitude | 16.08 | ||||
| K magnitude | 15.45 | ||||
| u magnitude | 16.29 (0.007) | 16.29 (0.007) | |||
| g magnitude | 15.96 (0.004) | 15.96 (0.004) | |||
| r magnitude | 16.22 (0.004) | 16.22 (0.004) | |||
| i magnitude | 16.43 (0.005) | 16.43 (0.005) | |||
| z magnitude | 16.59 (0.01) | 16.59 (0.01) | |||
| G magnitude | 20.12 (0.006) | 16.10 (0.0009) | 16.08 (0.003) | ||
| BP magnitude | 20.51 (0.08) | 16.04 (0.004) | |||
| RP magnitude | 19.69 (0.09) | 16.12 (0.004) | |||
| Pan g magnitude | 16.02 (0.002) | ||||
| Pan r magnitude | 16.23 (0.002) | ||||
| Pan i magnitude | 16.46 (0.003) | ||||
| Pan z magnitude | 16.63 (0.006) | ||||
| Pan y magnitude | 16.71 (0.01) | ||||
| E(B-V) | 0.129 | ||||
* 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.