All names: Gaia EDR3 1217872817555622272, SDSSJ154635.33+230506.5, Gaia DR2 1217872817555622272, Gaia DR3 1217872817555622272, SDSS J154635.33+230506.5, SDSS J154635.33+230506.6, GALEX J154635.3+230506, SDSS J154635.34+230506.5
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 15 46 35.32 (0.06) | 15 46 35.33 | 15 46 35.34 (0.06) | ||
| Declination | 23 05 06.56 (0.07) | 23 05 06.50 | 23 05 06.59 (0.07) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 23670.0 (1436) | |||
| log(g) | [cgs] | 5.00 (0.2) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.27 (0.1) | 0.24 (0.1) | 0.27 (0.1) | |
| Distance | [pc] | 3750.94 (1399) | 4086.64 (2238) | 3750.94 (1399) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -10.908 (0.08) | -10.85 (0.2) | -10.908 (0.08) | |
| Proper motion (declination) | [mas/yr] | -1.815 (0.1) | -1.724 (0.2) | -1.815 (0.1) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 17.41 (0.009) | 17.41 (0.009) | |||
| g magnitude | 17.35 (0.005) | 17.35 (0.005) | |||
| r magnitude | 17.73 (0.006) | 17.73 (0.006) | |||
| i magnitude | 18.01 (0.008) | 18.01 (0.008) | |||
| z magnitude | 18.29 (0.03) | 18.29 (0.03) | |||
| G magnitude | 17.55 (0.003) | 17.58 (0.001) | 17.55 (0.003) | ||
| BP magnitude | 17.48 (0.01) | 17.42 (0.01) | |||
| RP magnitude | 17.75 (0.02) | 17.71 (0.01) | |||
| Pan g magnitude | 17.41 (0.006) | ||||
| Pan r magnitude | 17.75 (0.003) | ||||
| Pan i magnitude | 18.04 (0.003) | ||||
| Pan z magnitude | 18.26 (0.007) | ||||
| Pan y magnitude | 18.43 (0.04) | ||||
| E(B-V) | 0.050 | ||||
* 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.