SDSS J164921.61+324613.2
All names: SDSS J164921.63+324613.26, SDSS J164921.62+324613.2, Gaia EDR3 1314147739311054208, Gaia DR3 1314147739311054208, GALEX J164921.6+324613, Gaia DR2 1314147739311054208, SDSS J164921.63+324613.2, SDSS J164921.61+324613.2
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | SDSS DR10 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 49 21.62 (0.2) | 16 49 21.63 | 16 49 21.63 | 16 49 21.62 (0.2) | 16 49 21.62 (0.2) | 16 49 21.62 | ||||
| Declination | 32 46 13.25 (0.2) | 32 46 13.28 | 32 46 13.28 | 32 46 13.25 (0.2) | 32 46 13.28 (0.2) | 32 46 13.27 | ||||
| Spectral type | He-sdB | He-sdB | sdBHe | HeSDB: | ||||||
| Effective temperature | [K] | 29819.0 | 46667.0 (86) | 39937.0 (222) | ||||||
| log(g) | [cgs] | 6.52 | 7.00 (0.01) | 7.02 (0.03) | ||||||
| Mass | [M☉] | 0.257 | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 0.24 (0.2) | 0.37 (0.3) | 0.24 (0.2) | ||||||
| Distance | [pc] | 4252.48 (4109) | 2739.44 (2143) | 4251.70 (4107) | ||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -1.311346227 (0.3) | -1.851315333 (0.5) | -1.311 (0.3) | 1.3 | |||||
| Proper motion (declination) | [mas/yr] | -1.902905229 (0.3) | -1.396869863 (0.6) | -1.903 (0.3) | 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 | 18.91 (0.02) | 18.91 (0.02) | 18.90 (0.03) | 18.91 (0.02) | 18.91 (0.03) | |||||
| g magnitude | 19.25 (0.01) | 19.25 (0.01) | 19.27 (0.02) | 19.25 (0.01) | 19.27 (0.02) | |||||
| r magnitude | 19.74 (0.02) | 19.74 (0.02) | 19.75 (0.02) | 19.74 (0.02) | 19.76 (0.02) | |||||
| i magnitude | 20.12 (0.03) | 20.12 (0.03) | 20.14 (0.03) | 20.12 (0.03) | 20.14 (0.03) | |||||
| z magnitude | 20.40 (0.1) | 20.40 (0.1) | 20.35 (0.1) | 20.40 (0.1) | 20.39 (0.1) | |||||
| G magnitude | 19.55 (0.03) | 19.60 | 19.55 (0.004) | |||||||
| BP magnitude | 19.41 (0.03) | 19.29 | ||||||||
| RP magnitude | 19.77 (0.06) | 19.77 | ||||||||
| Pan g magnitude | ||||||||||
| Pan r magnitude | ||||||||||
| Pan i magnitude | ||||||||||
| Pan z magnitude | ||||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.022 | |||||||||
* Constant surface field
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