All names: SDSS J152306.96+080541.2, Gaia DR2 1163737091251944064, SDSS J152306.96+080541.24, Gaia EDR3 1163737091251944064, GALEX J152306.9+080541, SDSS J152306.95+080541.2, Gaia DR3 1163737091251944064, SDSSJ152306.95+080541.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|
| Right ascension | 15 23 06.94 (0.2) | 15 23 06.95 | 15 23 06.95 | 15 23 06.95 (0.2) | |||
| Declination | 08 05 41.07 (0.2) | 08 05 41.21 | 08 05 41.10 | 08 05 41.12 (0.2) | |||
| Spectral type | sdOB | He-sdB | sdBHe | ||||
| Effective temperature | [K] | 39937.0 (1424) | |||||
| log(g) | [cgs] | 5.41 (0.2) | |||||
| Mass | [M☉] | ||||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | ||||||
| log(H/He) | |||||||
| log(C/He) | |||||||
| log(Ca/He) | |||||||
| log(Ca/H) | |||||||
| Parallax | [mas] | -0.04 (0.3) | -0.31 (0.5) | ||||
| Distance | [pc] | ||||||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | -6.633911694 (0.2) | -5.542 (0.6) | -6.634 (0.2) | |||
| Proper motion (declination) | [mas/yr] | -2.749662253 (0.3) | -2.352 (0.8) | -2.75 (0.3) | |||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | |||||||
| V magnitude | |||||||
| R magnitude | |||||||
| I magnitude | |||||||
| J magnitude | |||||||
| H magnitude | |||||||
| K magnitude | |||||||
| u magnitude | 18.41 (0.02) | 18.41 (0.01) | 18.43 (0.02) | 18.41 (0.01) | |||
| g magnitude | 18.77 (0.008) | 18.77 (0.008) | 18.78 (0.02) | 18.77 (0.008) | |||
| r magnitude | 19.29 (0.01) | 19.29 (0.01) | 19.30 (0.02) | 19.29 (0.01) | |||
| i magnitude | 19.34 (0.02) | 19.34 (0.02) | 19.40 (0.02) | 19.34 (0.02) | |||
| z magnitude | 19.97 (0.09) | 19.97 (0.09) | 19.97 (0.08) | 19.97 (0.09) | |||
| G magnitude | 19.03 (0.02) | 19.08 (0.004) | 19.03 (0.004) | ||||
| BP magnitude | 18.90 (0.02) | 18.82 (0.02) | |||||
| RP magnitude | 19.42 (0.06) | 19.36 (0.07) | |||||
| Pan g magnitude | 18.84 (0.004) | 18.84 (0.004) | |||||
| Pan r magnitude | 19.27 (0.01) | 19.27 (0.01) | |||||
| Pan i magnitude | 19.61 (0.01) | 19.61 (0.01) | |||||
| Pan z magnitude | 19.94 (0.04) | 19.94 (0.04) | |||||
| Pan y magnitude | 19.88 (0.1) | 19.88 (0.1) | |||||
| E(B-V) | |||||||
* 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.