All names: SDSS J041521.67+252239.2, SDSS J041521.67+252239.3, TIC 56654122, Gaia DR3 150218508402721152, Gaia DR2 150218508402721152, GALEX J041521.6+252238, SDSSJ041521.67+252239.2, 2MASS J04152167+2522393
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 15 21.68 | 04 15 21.67 (0.05) | ||
| Declination | 25 22 39.25 | 25 22 39.27 (0.03) | ||
| Spectral type | sdB+MS | 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] | 0.79 (0.08) | 0.71 (0.06) | |
| Distance | [pc] | 1263.90 (128) | 1415.03 (128) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 6.314 (0.2) | 6.294 (0.07) | |
| Proper motion (declination) | [mas/yr] | -5.686 (0.1) | -5.941 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.85 (0.06) | 15.85 (0.06) | ||
| H magnitude | 15.87 (0.1) | 15.87 (0.1) | ||
| K magnitude | 15.77 (0.2) | 15.77 (0.2) | ||
| u magnitude | 16.42 (0.006) | 16.42 (0.006) | ||
| g magnitude | 16.17 (0.004) | 16.17 (0.004) | ||
| r magnitude | 16.15 (0.004) | 16.15 (0.004) | ||
| i magnitude | 16.25 (0.004) | 16.25 (0.004) | ||
| z magnitude | 16.32 (0.008) | 16.32 (0.008) | ||
| G magnitude | 16.11 (0.0008) | 16.09 (0.003) | ||
| BP magnitude | 16.16 (0.006) | |||
| RP magnitude | 15.89 (0.006) | |||
| Pan g magnitude | 16.18 (0.004) | |||
| Pan r magnitude | 16.17 (0.003) | |||
| Pan i magnitude | 16.23 (0.004) | |||
| Pan z magnitude | 16.33 (0.003) | |||
| Pan y magnitude | 16.40 (0.003) | |||
| E(B-V) | 0.333 | |||
* 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.