All names: 2MASS J23571670+3004141, WISEA J235716.66+300414.1, WISE J235716.67+300414.0, UCAC2 42518457, SDSS J235716.71+300413.9, TIC 155226140, PG2354+298, UCAC4 601-142803, Gaia DR3 2867351232309468160, Gaia EDR3 2867351232309468160, Gaia DR2 2867351232309468160, PG 2354+298
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 23 57 16.71 (0.04) | 23 57 16.69 | 23 57 16.71 (0.04) | ||
| Declination | 30 04 13.92 (0.03) | 30 04 14.15 | 30 04 13.93 (0.03) | ||
| Spectral type | sd | sd | |||
| 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] | 0.56 (0.06) | 0.52 (0.07) | 0.56 (0.06) | |
| Distance | [pc] | 1793.40 (185) | 1918.28 (258) | 1793.40 (185) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.424 (0.07) | -0.395 (0.1) | -0.424 (0.07) | |
| Proper motion (declination) | [mas/yr] | -0.81 (0.04) | -0.793 (0.06) | -0.81 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.37 (0.08) | ||||
| V magnitude | 15.62 (0.05) | ||||
| R magnitude | 16.06 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 16.25 (0.1) | 16.25 (0.1) | |||
| H magnitude | 15.98 | ||||
| K magnitude | 15.49 | ||||
| u magnitude | 14.92 (0.004) | ||||
| g magnitude | 15.33 (0.004) | 15.36 (0.05) | |||
| r magnitude | 15.86 (0.005) | 15.89 (0.09) | |||
| i magnitude | 16.22 (0.006) | ||||
| z magnitude | 16.55 (0.009) | ||||
| G magnitude | 15.61 (0.003) | 15.63 (0.0009) | 15.61 (0.003) | ||
| BP magnitude | 15.45 (0.004) | 15.40 (0.006) | |||
| RP magnitude | 15.90 (0.005) | 15.90 (0.003) | |||
| Pan g magnitude | 15.45 (0.002) | ||||
| Pan r magnitude | 15.90 (0.004) | ||||
| Pan i magnitude | 16.25 (0.001) | ||||
| Pan z magnitude | 16.51 (0.003) | ||||
| Pan y magnitude | 16.70 (0.004) | ||||
| E(B-V) | 0.067 | ||||
* 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.