All names: SDSSJ114900.55+223104.5, Gaia DR2 4003730000359833600, [DWS97] Leo 4, GALEX J114900.5+223105, SDSS J114900.55+223104.5, TIC 87496034, PG 1146+228, 2MASS J11490055+2231046, Gaia DR3 4003730000359833600
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 11 49 00.55 | 11 49 00.56 (0.03) | ||
| Declination | 22 31 04.50 | 22 31 04.56 (0.03) | ||
| Spectral type | sdOB+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] | 0.40 (0.06) | 0.46 (0.04) | |
| Distance | [pc] | 2478.31 (361) | 2174.86 (182) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.839 (0.09) | -3.749 (0.04) | |
| Proper motion (declination) | [mas/yr] | 0.641 (0.07) | 0.781 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.00 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.53 (0.03) | 14.53 (0.03) | ||
| H magnitude | 14.35 (0.05) | 14.35 (0.05) | ||
| K magnitude | 14.39 (0.06) | 14.39 (0.06) | ||
| u magnitude | 14.88 (0.004) | 14.88 (0.004) | ||
| g magnitude | 14.86 (0.003) | 14.86 (0.003) | ||
| r magnitude | 15.01 (0.003) | 15.01 (0.003) | ||
| i magnitude | 15.09 (0.004) | 15.09 (0.004) | ||
| z magnitude | 15.21 (0.005) | 15.21 (0.005) | ||
| G magnitude | 14.91 (0.0005) | 14.89 (0.003) | ||
| BP magnitude | 14.89 (0.004) | |||
| RP magnitude | 14.78 (0.001) | |||
| Pan g magnitude | 14.92 (0.01) | |||
| Pan r magnitude | 15.03 (0.004) | |||
| Pan i magnitude | 15.11 (0.003) | |||
| Pan z magnitude | 15.21 (0.003) | |||
| Pan y magnitude | 15.25 (0.003) | |||
| E(B-V) | 0.018 | |||
* 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.