All names: Gaia DR2 4299431347569705216, TYC 1077-218-1, UCAC2 35107569, 2MASS J20133761+0928013, TIC 273255412, UCAC3 199-280613, LAMOST J201337.61+092801.4, TYC1077-218-1, GSC 01077-00218, Gaia DR3 4299431347569705216, GALEX J201337.6+092801
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 13 37.61 | 20 13 37.61 (0.03) | ||
| Declination | 09 28 01.41 | 09 28 01.41 (0.02) | ||
| Spectral type | sdB | sdOB | ||
| Effective temperature | [K] | 33430.0 (110) | ||
| log(g) | [cgs] | 5.15 (0.02) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.44 (0.05) | 1.43 (0.04) | |
| Distance | [pc] | 696.38 (23) | 701.66 (19) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -11.283 (0.08) | -11.599 (0.04) | |
| Proper motion (declination) | [mas/yr] | 3.534 (0.07) | 3.42 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 12.02 (0.1) | |||
| V magnitude | 12.23 (0.2) | |||
| R magnitude | 12.82 (0.1) | |||
| I magnitude | ||||
| J magnitude | 13.00 (0.02) | 13.00 (0.02) | ||
| H magnitude | 13.11 (0.03) | 13.11 (0.03) | ||
| K magnitude | 13.23 (0.04) | 13.23 (0.04) | ||
| u magnitude | 12.34 (0.003) | |||
| g magnitude | 12.29 (0.001) | |||
| r magnitude | 14.48 (0.01) | |||
| i magnitude | 15.23 (0.01) | |||
| z magnitude | 13.68 (0.004) | |||
| G magnitude | 12.41 (0.0007) | 12.38 (0.003) | ||
| BP magnitude | 12.21 (0.006) | |||
| RP magnitude | 12.65 (0.002) | |||
| Pan g magnitude | 12.10 | |||
| Pan r magnitude | 12.60 | |||
| Pan i magnitude | 12.95 | |||
| Pan z magnitude | 13.26 (0.002) | |||
| Pan y magnitude | 13.42 (0.002) | |||
| E(B-V) | 0.077 | |||
* 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.