All names: Gaia EDR3 3774467390583556096, PG1027-077, EC 10278-0743, GALEX J103022.8-075900, PG 1027-077, Gaia DR2 3774467390583556096, Gaia DR3 3774467390583556096, TIC 36980316, UCAC4 411-050864, 2MASS J10302273-0759005
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 10 30 22.74 (0.05) | 10 30 22.78 | 10 30 22.75 (0.05) | ||
| Declination | -07 59 00.99 (0.04) | -07 59 00.70 | -07 59 00.95 (0.04) | ||
| Spectral type | sdB | sdB | |||
| 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] | 0.50 (0.06) | 0.44 (0.09) | 0.50 (0.06) | |
| Distance | [pc] | 1983.34 (232) | 2294.63 (448) | 1983.34 (232) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -8.166 (0.06) | -8.25 (0.1) | -8.166 (0.06) | |
| Proper motion (declination) | [mas/yr] | -2.607 (0.06) | -2.446 (0.1) | -2.607 (0.06) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.19 | ||||
| V magnitude | 16.33 | ||||
| R magnitude | 16.26 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 16.64 (0.1) | 16.64 (0.1) | |||
| H magnitude | 16.58 (0.2) | 16.58 (0.2) | |||
| K magnitude | 16.10 | ||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 16.13 (0.003) | 16.15 (0.002) | 16.13 (0.003) | ||
| BP magnitude | 16.01 (0.006) | 15.98 (0.008) | |||
| RP magnitude | 16.37 (0.006) | 16.37 (0.007) | |||
| Pan g magnitude | 15.96 (0.002) | ||||
| Pan r magnitude | 16.36 (0.002) | ||||
| Pan i magnitude | 16.70 (0.005) | ||||
| Pan z magnitude | 16.95 (0.003) | ||||
| Pan y magnitude | 17.14 (0.005) | ||||
| E(B-V) | 0.029 | ||||
* 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.