All names: CSO 764, Gaia EDR3 1595249225666069376, GALEX J153100.5+514507, USNO-B1.0 1417-00280291, Gaia DR3 1595249225666069376, SDSS J153100.60+514507.0, SBSS1529+519, SBSS 1529+519, Gaia DR2 1595249225666069376, SDSS J153100.60+514507.05
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 31 00.60 (0.09) | 15 31 00.60 | 15 31 00.52 | 15 31 00.60 (0.1) | 15 31 00.60 (0.09) | ||||
| Declination | 51 45 06.93 (0.1) | 51 45 07.04 | 51 45 07.40 | 51 45 06.94 (0.2) | 51 45 06.99 (0.1) | ||||
| Spectral type | He-sdO | sdO | sdOC | ||||||
| Effective temperature | [K] | 54815.0 (1470) | |||||||
| log(g) | [cgs] | 6.03 (0.1) | |||||||
| Mass | [M☉] | 0.221 (0.004) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.18 (0.1) | -0.02 (0.2) | -0.02 (0.2) | 0.18 (0.1) | ||||
| Distance | [pc] | 5698.75 (3785) | 5698.01 (3786) | ||||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -1.609265972 (0.1) | -1.715 (0.3) | -1.714905861 (0.3) | -1.609 (0.1) | ||||
| Proper motion (declination) | [mas/yr] | -3.337912351 (0.2) | -3.165 (0.4) | -3.165039292 (0.4) | -3.338 (0.2) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 17.90 | ||||||||
| V magnitude | 18.00 | ||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 17.45 (0.009) | 17.45 (0.009) | 17.45 (0.02) | 17.45 (0.01) | |||||
| g magnitude | 17.85 (0.006) | 17.85 (0.006) | 17.87 (0.02) | 17.86 (0.02) | |||||
| r magnitude | 18.39 (0.008) | 18.39 (0.008) | 18.39 (0.02) | 18.38 (0.01) | |||||
| i magnitude | 18.77 (0.01) | 18.77 (0.01) | 18.76 (0.02) | 18.76 (0.02) | |||||
| z magnitude | 19.19 (0.05) | 19.19 (0.05) | 19.19 (0.06) | 19.15 (0.05) | |||||
| G magnitude | 18.12 (0.01) | 18.16 (0.003) | 18.16 | 18.12 (0.003) | |||||
| BP magnitude | 17.97 (0.01) | 17.91 (0.02) | 17.91 | ||||||
| RP magnitude | 18.40 (0.03) | 18.44 (0.04) | 18.44 | ||||||
| Pan g magnitude | 17.95 (0.005) | 17.95 (0.005) | |||||||
| Pan r magnitude | 18.40 (0.01) | 18.40 (0.01) | |||||||
| Pan i magnitude | 18.79 (0.006) | 18.79 (0.006) | |||||||
| Pan z magnitude | 19.08 (0.01) | 19.08 (0.01) | |||||||
| Pan y magnitude | 19.27 (0.06) | 19.27 (0.06) | |||||||
| E(B-V) | 0.020 | ||||||||
* 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.