All names: SDSS J203800.91+042908.2, HS 2035+0418, UCAC4 473-123462, 2MASS J20380090+0429084, Gaia EDR3 4233362449770803840, GALEX J203800.8+042906, HS2035+0418, TIC 466750264, UCAC2 33315288, Gaia DR2 4233362621569490688, Gaia DR3 4233362621569490688
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 38 08.55 (0.3) | 20 38 00.94 | 20 38 00.92 (0.03) | ||
| Declination | 04 29 26.97 (0.2) | 04 29 09.17 | 04 29 08.33 (0.02) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 28500.0 (800) | |||
| log(g) | [cgs] | 5.50 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 3.41 (0.4) | 0.63 (0.07) | 0.71 (0.04) | |
| Distance | [pc] | 293.38 (31) | 1582.53 (188) | 1400.56 (84) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -2.719 (0.4) | -6.792 (0.1) | -6.854 (0.04) | |
| Proper motion (declination) | [mas/yr] | -7.755 (0.3) | -7.972 (0.07) | -7.985 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.63 (0.04) | ||||
| V magnitude | 14.82 (0.02) | ||||
| R magnitude | 15.07 (0.05) | ||||
| I magnitude | |||||
| J magnitude | 15.37 (0.06) | 15.37 (0.06) | |||
| H magnitude | 15.21 (0.1) | 15.21 (0.1) | |||
| K magnitude | 15.47 (0.2) | 15.47 (0.2) | |||
| u magnitude | 14.43 (0.004) | 14.48 (0.02) | |||
| g magnitude | 14.52 (0.003) | 14.52 (0.004) | |||
| r magnitude | 14.93 (0.004) | 14.98 (0.006) | |||
| i magnitude | 15.24 (0.005) | 15.26 (0.005) | |||
| z magnitude | 15.50 (0.006) | 15.55 (0.02) | |||
| G magnitude | 19.29 (0.004) | 14.77 (0.001) | 14.76 (0.003) | ||
| BP magnitude | 19.33 (0.03) | 14.60 (0.006) | |||
| RP magnitude | 19.35 (0.05) | 14.95 (0.009) | |||
| Pan g magnitude | 14.62 (0.002) | ||||
| Pan r magnitude | 14.98 (0.005) | ||||
| Pan i magnitude | 15.29 (0.004) | ||||
| Pan z magnitude | 15.55 (0.003) | ||||
| Pan y magnitude | 15.72 (0.006) | ||||
| E(B-V) | 0.069 | ||||
* 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.