All names: LAMOST J214242.40+330452.8, Gaia EDR3 1946937541760735872, Gaia DR3 1946937541760735872, 2MASS J21424242+3304528, TIC 239632455, UCAC4 616-126852, WISE J214242.39+330452.8, Gaia DR2 1946937541760735872, GALEX J214242.3+330453, LAMOSTJ214242.40+330452.8, WISEA J214242.39+330452.7
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 42 42.41 (0.02) | 21 42 42.41 | 21 42 42.41 (0.02) | ||
| Declination | 33 04 52.78 (0.02) | 33 04 52.80 | 33 04 52.79 (0.02) | ||
| Spectral type | sdOB | sdOB | |||
| Effective temperature | [K] | 36519.0 (109) | |||
| log(g) | [cgs] | 5.83 (0.03) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.99 (0.03) | 1.00 (0.05) | 0.99 (0.03) | |
| Distance | [pc] | 1012.35 (33) | 999.20 (46) | 1012.35 (33) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.907 (0.02) | -0.826 (0.07) | -0.907 (0.02) | |
| Proper motion (declination) | [mas/yr] | -0.604 (0.03) | -0.787 (0.08) | -0.604 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.63 (0.04) | ||||
| V magnitude | 14.81 (0.05) | ||||
| R magnitude | 14.93 (0.06) | ||||
| I magnitude | |||||
| J magnitude | 15.26 (0.05) | 15.26 (0.05) | |||
| H magnitude | 15.46 (0.1) | 15.46 (0.1) | |||
| K magnitude | 14.89 | ||||
| u magnitude | |||||
| g magnitude | 14.61 (0.04) | ||||
| r magnitude | 15.03 (0.04) | ||||
| i magnitude | 15.22 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 14.78 (0.003) | 14.79 (0.0005) | 14.78 (0.003) | ||
| BP magnitude | 14.67 (0.003) | 14.63 (0.003) | |||
| RP magnitude | 14.97 (0.004) | 14.97 (0.002) | |||
| Pan g magnitude | 14.66 (0.003) | ||||
| Pan r magnitude | 15.00 (0.002) | ||||
| Pan i magnitude | 15.31 (0.001) | ||||
| Pan z magnitude | 15.55 (0.002) | ||||
| Pan y magnitude | 15.70 (0.004) | ||||
| E(B-V) | 0.147 | ||||
* 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.