All names: Mrk 252, TIC 159167114, Gaia DR3 1563849995370777472, Gaia DR2 1563849995370777472, UCAC4 727-048254, 2MASS J13201591+5523533, Mrk252, SBSS 1318+556
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 13 20 15.84 | 13 20 15.88 (0.03) | ||
| Declination | 55 23 53.49 | 55 23 53.19 (0.04) | ||
| Spectral type | sdB | 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] | 0.11 (0.06) | 0.08 (0.05) | |
| Distance | [pc] | 9267.84 (5377) | 11890.61 (6377) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.41 (0.08) | -1.394 (0.04) | |
| Proper motion (declination) | [mas/yr] | -2.412 (0.09) | -2.38 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.65 (0.05) | |||
| V magnitude | 16.23 (0.1) | |||
| R magnitude | 16.55 | |||
| I magnitude | ||||
| J magnitude | 16.16 (0.09) | 16.16 (0.09) | ||
| H magnitude | 15.75 (0.1) | 15.75 (0.1) | ||
| K magnitude | 15.59 (0.2) | 15.59 (0.1) | ||
| u magnitude | 17.72 (0.01) | |||
| g magnitude | 16.44 (0.004) | |||
| r magnitude | 16.52 (0.004) | |||
| i magnitude | 16.62 (0.005) | |||
| z magnitude | 16.64 (0.009) | |||
| G magnitude | 16.52 (0.001) | 16.51 (0.003) | ||
| BP magnitude | 16.58 (0.003) | |||
| RP magnitude | 16.31 (0.005) | |||
| Pan g magnitude | 16.52 (0.006) | |||
| Pan r magnitude | 16.57 (0.003) | |||
| Pan i magnitude | 16.67 (0.002) | |||
| Pan z magnitude | 16.73 (0.004) | |||
| Pan y magnitude | 16.73 (0.007) | |||
| E(B-V) | 0.019 | |||
* 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.