SDSS J082159.07+411227.9
All names: SDSS J082159.06+411228.0, GALEX J082159.0+411228, SDSSJ082159.06+411227.9, SDSS J082159.07+411227.97, Gaia EDR3 915423316515904384, SDSS J082159.07+411227.9, SDSS J082159.06+411227.9, Gaia DR2 915423316515904384, Gaia DR3 915423316515904384
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 21 59.07 (0.2) | 08 21 59.06 | 08 21 59.06 | 08 21 59.07 (0.2) | 08 21 59.07 (0.2) | ||||||
| Declination | 41 12 28.00 (0.1) | 41 12 27.99 | 41 12 27.90 | 41 12 28.00 (0.2) | 41 12 28.01 (0.1) | ||||||
| Spectral type | sdB | sdB | sdB | sdB | sdB | ||||||
| Effective temperature | [K] | 19204.0 | 22961.0 | 27509.0 (305) | |||||||
| log(g) | [cgs] | 6.01 | 5.59 | 5.13 (0.05) | |||||||
| Mass | [M☉] | 0.185 | 0.065 | 0.181 (0.05) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 0.34 (0.2) | 0.58 (0.3) | 0.58 (0.3) | 0.34 (0.2) | ||||||
| Distance | [pc] | 2929.44 (1711) | 1724.73 (794) | 1724.62 (793) | 2929.12 (1711) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -0.212056886 (0.2) | 0.273 (0.4) | 0.272957447 (0.4) | -0.212 (0.2) | ||||||
| Proper motion (declination) | [mas/yr] | -0.924622427 (0.2) | -0.86 (0.3) | -0.859828834 (0.3) | -0.925 (0.2) | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 18.10 (0.01) | 18.10 (0.01) | 18.11 (0.02) | 18.10 (0.01) | |||||||
| g magnitude | 18.16 (0.006) | 18.16 (0.006) | 18.18 (0.02) | 18.16 (0.006) | |||||||
| r magnitude | 18.58 (0.009) | 18.58 (0.009) | 18.58 (0.02) | 18.58 (0.009) | |||||||
| i magnitude | 18.93 (0.01) | 18.93 (0.01) | 18.95 (0.02) | 18.93 (0.01) | |||||||
| z magnitude | 19.26 (0.06) | 19.26 (0.06) | 19.26 (0.06) | 19.26 (0.06) | |||||||
| G magnitude | 18.40 (0.02) | 18.43 (0.003) | 18.43 | 18.40 (0.004) | |||||||
| BP magnitude | 18.31 (0.02) | 18.24 (0.02) | 18.24 | ||||||||
| RP magnitude | 18.68 (0.04) | 18.62 (0.04) | 18.62 | ||||||||
| Pan g magnitude | 18.24 (0.01) | 18.23 (0.01) | |||||||||
| Pan r magnitude | 18.61 (0.006) | 18.61 (0.006) | |||||||||
| Pan i magnitude | 18.93 (0.006) | 18.93 (0.006) | |||||||||
| Pan z magnitude | 19.19 (0.02) | 19.19 (0.02) | |||||||||
| Pan y magnitude | 19.29 (0.09) | 19.29 (0.09) | |||||||||
| E(B-V) | 0.036 | ||||||||||
* Constant surface field
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