All names: PG1531+277, SDSS J153316.57+273030.2, Gaia DR3 1272285075330826496, WISE J153316.66+273030.3, SDSS J153316.58+273030.2, UCAC2 41550552, PG 1531+277, Gaia DR2 1272285075330826496, Ton 239, 2MASS J15331658+2730304, UCAC4 588-053391, Gaia EDR3 1272285075330826496, WISEA J153316.65+273030.2, TIC 274928484
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 15 33 16.58 (0.02) | 15 33 16.59 | 15 33 16.58 (0.02) | ||
| Declination | 27 30 30.01 (0.02) | 27 30 31.39 | 27 30 30.25 (0.02) | ||
| Spectral type | sdO | sdOA | |||
| 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] | 0.94 (0.03) | 0.83 (0.05) | 0.94 (0.03) | |
| Distance | [pc] | 1065.19 (37) | 1205.25 (68) | 1065.19 (37) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.574 (0.02) | -0.583 (0.06) | -0.574 (0.02) | |
| Proper motion (declination) | [mas/yr] | -14.966 (0.03) | -15.051 (0.08) | -14.966 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.43 (0.04) | ||||
| V magnitude | 15.61 (0.06) | ||||
| R magnitude | 15.91 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 16.27 (0.1) | 16.27 (0.1) | |||
| H magnitude | 15.74 | ||||
| K magnitude | 14.94 | ||||
| u magnitude | 15.20 (0.005) | ||||
| g magnitude | 15.33 (0.004) | 15.43 (0.07) | |||
| r magnitude | 15.76 (0.004) | 15.81 (0.03) | |||
| i magnitude | 16.06 (0.005) | ||||
| z magnitude | 16.35 (0.008) | ||||
| G magnitude | 15.52 (0.003) | 15.54 (0.0004) | 15.52 (0.003) | ||
| BP magnitude | 15.41 (0.003) | 15.35 (0.005) | |||
| RP magnitude | 15.74 (0.005) | 15.73 (0.002) | |||
| Pan g magnitude | 15.35 (0.004) | ||||
| Pan r magnitude | 15.75 (0.007) | ||||
| Pan i magnitude | 16.08 (0.003) | ||||
| Pan z magnitude | 16.34 (0.005) | ||||
| Pan y magnitude | 16.52 (0.007) | ||||
| E(B-V) | 0.035 | ||||
* 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.