All names: TIC 256361519, HD345431, Gaia EDR3 1833281127895263872, Gaia DR3 1833281127895263872, LAMOST J200043.09+231601.5, UCAC3 227-213106, Gaia DR2 1833281127895263872, GSC 02141-01765, LS II +23 57, UCAC2 40080011, TYC 2141-1765-1, ALS 10702, CSI+23-19586, 2MASS J20004309+2316015, HD 345431
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 00 43.12 (0.03) | 20 00 43.10 | 20 00 43.09 (0.03) | ||
| Declination | 23 16 01.89 (0.03) | 23 16 01.56 | 23 16 01.56 (0.03) | ||
| Spectral type | sdOB | sdOB | |||
| Effective temperature | [K] | 35410.0 (310) | |||
| log(g) | [cgs] | 5.93 (0.03) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 3.49 (0.05) | 3.66 (0.05) | 3.49 (0.05) | |
| Distance | [pc] | 286.39 (4) | 273.34 (4) | 286.39 (4) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 21.898 (0.03) | 21.897 (0.07) | 21.898 (0.03) | |
| Proper motion (declination) | [mas/yr] | 20.92 (0.04) | 20.896 (0.07) | 20.92 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 11.85 (0.06) | ||||
| V magnitude | 12.33 (0.2) | ||||
| R magnitude | 12.38 (0.05) | ||||
| I magnitude | |||||
| J magnitude | 12.68 (0.03) | 12.68 (0.03) | |||
| H magnitude | 12.79 (0.03) | 12.79 (0.03) | |||
| K magnitude | 12.90 (0.02) | 12.90 (0.02) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 11.96 (0.003) | 11.97 (0.0005) | 11.96 (0.003) | ||
| BP magnitude | 11.81 (0.003) | 11.75 (0.006) | |||
| RP magnitude | 12.26 (0.004) | 12.26 (0.001) | |||
| Pan g magnitude | 11.89 | ||||
| Pan r magnitude | 12.35 | ||||
| Pan i magnitude | 12.68 | ||||
| Pan z magnitude | 12.97 | ||||
| Pan y magnitude | 13.09 (0.0004) | ||||
| E(B-V) | 0.034 | ||||
* 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.