All names: GALEX J152438.1-012830, BPS CS 22890-0079, PG 1522-013, UCAC2 31345812, SDSS J152438.12-012830.8, 2MASS J15243811-0128307, FBS 1522-013, UCAC4 443-061578, LAMOST J152438.20-012830.6, TIC 180349077, Gaia DR2 4415381450083363968, PG1522-013, Gaia DR3 4415381450083363968
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 15 24 38.18 | 15 24 38.13 (0.03) | ||
| Declination | -01 28 30.97 | -01 28 30.83 (0.03) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 25320.0 (511) | ||
| log(g) | [cgs] | 5.35 (0.07) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.85 (0.05) | 0.80 (0.03) | |
| Distance | [pc] | 1178.69 (66) | 1253.92 (51) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -15.782 (0.1) | -15.833 (0.04) | |
| Proper motion (declination) | [mas/yr] | 4.323 (0.09) | 4.196 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.03 (0.02) | |||
| V magnitude | 15.12 (0.01) | |||
| R magnitude | 15.55 (0.3) | |||
| I magnitude | ||||
| J magnitude | 15.39 (0.04) | 15.49 (0.008) | ||
| H magnitude | 15.37 (0.1) | 15.37 (0.01) | ||
| K magnitude | 15.34 (0.2) | 15.35 (0.02) | ||
| u magnitude | 14.89 (0.004) | 14.89 (0.02) | ||
| g magnitude | 14.90 (0.003) | 14.92 (0.01) | ||
| r magnitude | 15.21 (0.004) | 15.21 (0.01) | ||
| i magnitude | 15.48 (0.004) | 15.47 (0.02) | ||
| z magnitude | 15.72 (0.007) | 15.70 (0.02) | ||
| G magnitude | 15.08 (0.0006) | 15.07 (0.003) | ||
| BP magnitude | 14.96 (0.009) | |||
| RP magnitude | 15.18 (0.002) | |||
| Pan g magnitude | 14.97 (0.004) | |||
| Pan r magnitude | 15.25 (0.002) | |||
| Pan i magnitude | 15.52 (0.001) | |||
| Pan z magnitude | 15.72 (0.005) | |||
| Pan y magnitude | 15.85 (0.006) | |||
| E(B-V) | 0.104 | |||
* 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.