SDSS J165739.40+191233.9
All names: Gaia DR2 4561150849108531200, Gaia DR3 4561150849108531200, SDSS J165739.40+191233.9, GALEX J165739.4+191234, Gaia EDR3 4561150849108531200
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD HE | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 57 39.40 (0.3) | 16 57 39.40 | 16 57 39.40 (0.4) | 16 57 39.40 (0.3) | 16 57 39.40 | ||||
| Declination | 19 12 33.91 (0.3) | 19 12 33.96 | 19 12 33.91 (0.4) | 19 12 33.91 (0.3) | 19 12 33.94 | ||||
| Spectral type | DB | DB | DB | ||||||
| Effective temperature | [K] | 19396.0 | 48462.0 (1118) | ||||||
| log(g) | [cgs] | 6.74 | 7.34 (0.3) | ||||||
| Mass | [M☉] | 0.215 | 0.415 (0.08) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| log(N/He) | |||||||||
| log(O/He) | |||||||||
| log(Na/He) | |||||||||
| log(Mg/He) | |||||||||
| log(Al/He) | |||||||||
| log(Si/He) | |||||||||
| log(P/He) | |||||||||
| log(S/He) | |||||||||
| log(Cl/He) | |||||||||
| log(Sc/He) | |||||||||
| log(Ti/He) | |||||||||
| log(V/He) | |||||||||
| log(Cr/He) | |||||||||
| log(Mn/He) | |||||||||
| log(Fe/He) | |||||||||
| log(Co/He) | |||||||||
| log(Ni/He) | |||||||||
| log(Cu/He) | |||||||||
| log(Zn/He) | |||||||||
| log(Ga/He) | |||||||||
| log(Ge/He) | |||||||||
| log(Sr/He) | |||||||||
| Parallax | [mas] | -0.07 (0.4) | 0.54 (0.6) | 0.54 (0.6) | |||||
| Distance | [pc] | 1856.13 (2109) | 1855.98 (2109) | ||||||
| Composition | He | ||||||||
| Proper motion (right ascension) | [mas/yr] | -2.842940816 (0.3) | -1.544226518 (0.8) | -2.843 (0.3) | |||||
| Proper motion (declination) | [mas/yr] | 0.286455178 (0.3) | 0.018626741 (0.8) | 0.286 (0.3) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 19.50 (0.03) | 19.45 (0.04) | 19.45 (0.04) | ||||||
| g magnitude | 19.80 (0.01) | 19.79 (0.02) | 19.79 (0.02) | ||||||
| r magnitude | 20.23 (0.03) | 20.30 (0.03) | 20.30 (0.03) | ||||||
| i magnitude | 20.51 (0.05) | 20.66 (0.05) | 20.66 (0.05) | ||||||
| z magnitude | 20.71 (0.2) | 20.54 (0.1) | 20.54 (0.1) | ||||||
| G magnitude | 20.01 (0.04) | 20.08 | 20.01 (0.005) | ||||||
| BP magnitude | 19.87 (0.04) | 19.84 | |||||||
| RP magnitude | 20.18 (0.09) | 20.25 | |||||||
| Pan g magnitude | 19.86 (0.007) | ||||||||
| Pan r magnitude | 20.24 (0.02) | ||||||||
| Pan i magnitude | 20.59 (0.04) | ||||||||
| Pan z magnitude | 20.71 (0.03) | ||||||||
| Pan y magnitude | 20.56 (0.2) | ||||||||
| E(B-V) | 0.054 | ||||||||
* Constant surface field
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