All names: TIC 149767908, WISE J084210.32-021316.6, Gaia EDR3 3072364035824813184, SDSS J084210.31-021316.7, Gaia DR2 3072364177559581696, Gaia DR3 3072364177559581696, WISEA J084210.31-021316.6, GALEX J084210.3-021315, UCAC2 31002003, UCAC4 439-046687, DENIS J084210.3-021316, LAMOST J084210.31-021316.6, GALEXJ08421-0213, LAMOST J084210.35-021315.9, 2MASS J08421032-0213168, LAMOST J084210.31-021316.7
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 08 42 08.23 (0.3) | 08 42 10.35 | 08 42 10.32 (0.02) | ||
| Declination | -02 14 32.31 (0.2) | -02 13 15.96 | -02 13 16.67 (0.01) | ||
| Spectral type | sdB+MS | sdB+F0V | |||
| 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] | 2.54 (0.3) | 0.77 (0.05) | 0.88 (0.02) | |
| Distance | [pc] | 393.96 (48) | 1305.99 (90) | 1132.25 (32) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.527 (0.4) | -0.351 (0.2) | -0.551 (0.03) | |
| Proper motion (declination) | [mas/yr] | -6.948 (0.3) | -6.231 (0.08) | -6.257 (0.02) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.21 (0.06) | ||||
| V magnitude | 13.05 (0.03) | ||||
| R magnitude | 13.13 (0.1) | ||||
| I magnitude | 12.77 (0.02) | ||||
| J magnitude | 12.55 (0.02) | 12.55 (0.02) | |||
| H magnitude | 12.49 (0.02) | 12.49 (0.02) | |||
| K magnitude | 12.48 (0.03) | 12.48 (0.03) | |||
| u magnitude | 14.65 (0.005) | ||||
| g magnitude | 13.48 (0.002) | 13.12 (0.03) | |||
| r magnitude | 13.17 (0.001) | 13.04 (0.08) | |||
| i magnitude | 14.77 (0.01) | 13.64 (0.8) | |||
| z magnitude | 13.71 (0.005) | ||||
| G magnitude | 19.15 (0.004) | 13.00 (0.0006) | 12.98 (0.003) | ||
| BP magnitude | 19.16 (0.03) | 13.07 (0.002) | |||
| RP magnitude | 19.20 (0.05) | 12.81 (0.0009) | |||
| Pan g magnitude | 12.82 | ||||
| Pan r magnitude | 12.91 | ||||
| Pan i magnitude | 13.04 | ||||
| Pan z magnitude | 13.24 (0.003) | ||||
| Pan y magnitude | 13.28 (0.005) | ||||
| E(B-V) | 0.026 | ||||
* 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.