All names: TIC 230775376, GSC 02687-00425, LS II +29 46, Feige114, Feige 114, ATO J312.4131+30.0818, CSI+29-20476, ALS 11570, Gaia EDR3 1858674795598509952, uvby98 620001114, Gaia DR3 1858674589447492608, LAMOST J204939.16+300454.5, Gaia DR2 1858674589447492608, 2MASS J20493916+3004546
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 49 37.45 (0.2) | 20 49 39.16 | 20 49 39.16 (0.02) | ||
| Declination | 30 06 10.55 (0.4) | 30 04 54.54 | 30 04 54.54 (0.02) | ||
| Spectral type | sdOB | sdOB | |||
| Effective temperature | [K] | 38493.0 (157) | |||
| log(g) | [cgs] | 5.58 (0.02) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.04 (0.5) | 1.13 (0.04) | 1.22 (0.03) | |
| Distance | [pc] | 960.06 (494) | 884.33 (34) | 820.95 (21) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -2.968 (0.3) | -4.211 (0.06) | -4.194 (0.02) | |
| Proper motion (declination) | [mas/yr] | -4.54 (0.4) | 0.1 (0.07) | 0.19 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.40 | ||||
| V magnitude | 13.45 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 14.06 (0.03) | 14.06 (0.03) | |||
| H magnitude | 14.19 (0.04) | 14.19 (0.04) | |||
| K magnitude | 14.27 (0.08) | 14.27 (0.08) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 20.12 (0.005) | 13.50 (0.001) | 13.49 (0.003) | ||
| BP magnitude | 20.49 (0.06) | 13.32 (0.005) | |||
| RP magnitude | 19.69 (0.05) | 13.71 (0.005) | |||
| Pan g magnitude | 13.07 | ||||
| Pan r magnitude | 13.87 (0.02) | ||||
| Pan i magnitude | 14.08 (0.003) | ||||
| Pan z magnitude | 14.31 (0.01) | ||||
| Pan y magnitude | 14.48 (0.003) | ||||
| E(B-V) | 0.131 | ||||
* 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.