All names: SDSSJ080017.51+055030.4, SDSS J080017.51+055030.4, Gaia DR3 3096022472335601408, Gaia DR2 3096022472335601408, 2MASS J08001751+0550304, UCAC4 480-041458
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 08 00 17.52 | 08 00 17.52 (0.02) | ||
| Declination | 05 50 30.41 | 05 50 30.41 (0.02) | ||
| Spectral type | sdB+MS | 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] | 0.40 (0.04) | 0.37 (0.03) | |
| Distance | [pc] | 2505.01 (282) | 2693.97 (200) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.525 (0.07) | -1.473 (0.03) | |
| Proper motion (declination) | [mas/yr] | -1.263 (0.04) | -1.208 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.72 (0.05) | |||
| V magnitude | 14.59 (0.01) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.37 (0.04) | 14.37 (0.04) | ||
| H magnitude | 14.32 (0.05) | 14.32 (0.05) | ||
| K magnitude | 14.34 (0.08) | 14.34 (0.08) | ||
| u magnitude | 15.20 (0.004) | 15.20 (0.004) | ||
| g magnitude | 14.51 (0.004) | 14.57 (0.02) | ||
| r magnitude | 14.63 (0.004) | 14.67 (0.04) | ||
| i magnitude | 14.76 (0.004) | 14.79 (0.06) | ||
| z magnitude | 14.90 (0.005) | 14.90 (0.005) | ||
| G magnitude | 14.57 (0.0004) | 14.55 (0.003) | ||
| BP magnitude | 14.59 (0.002) | |||
| RP magnitude | 14.46 (0.001) | |||
| Pan g magnitude | 14.54 (0.003) | |||
| Pan r magnitude | 14.66 (0.001) | |||
| Pan i magnitude | 14.80 (0.002) | |||
| Pan z magnitude | 14.93 (0.004) | |||
| Pan y magnitude | 14.97 (0.003) | |||
| E(B-V) | 0.027 | |||
* 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.