SDSS J085413.94+050843.6
All names: SDSS J085413.94+050843.6, Gaia DR2 581977105219243904, Gaia DR3 581977105219243904, Gaia EDR3 581977105219243904, SDSS J085413.95+050843.7, GALEX J085413.9+050844, SDSS J085413.95+050843.6
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD HE | Gaia DR2 | Stilism | Koester & Kepler 2015 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 54 13.93 (0.2) | 08 54 13.95 | 08 54 13.93 (0.4) | 08 54 13.95 (0.2) | 08 54 13.95 | ||||||
| Declination | 05 08 43.81 (0.1) | 05 08 43.68 | 05 08 43.80 (0.3) | 05 08 43.70 (0.1) | 05 08 43.69 | ||||||
| Spectral type | DB | DBH+M | DBHM: | DB | |||||||
| Effective temperature | [K] | 17477.0 | 20344.0 (379) | 21502.0 (615) | |||||||
| log(g) | [cgs] | 7.80 | 7.94 (0.07) | 8.00 (0.07) | |||||||
| Mass | [M☉] | 0.488 | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.0828 | |||||||||
| log(H/He) | <-3.93 | ||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | <-4.53 | ||||||||||
| 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] | 2.09 (0.3) | 2.13 (0.5) | 2.09 (0.3) | |||||||
| Distance | [pc] | 478.91 (63) | 469.62 (102) | 458.00 | 478.90 (63) | ||||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -14.02572571 (0.3) | -13.91522477 (0.7) | -14.026 (0.3) | |||||||
| Proper motion (declination) | [mas/yr] | 6.800947498 (0.2) | 6.624571911 (0.5) | 6.801 (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 | 18.76 (0.02) | 18.76 (0.02) | 18.73 (0.03) | ||||||||
| g magnitude | 18.89 (0.009) | 18.89 (0.009) | 18.86 (0.03) | ||||||||
| r magnitude | 19.20 (0.01) | 19.20 (0.01) | 19.19 (0.02) | ||||||||
| i magnitude | 19.47 (0.02) | 19.47 (0.02) | 19.43 (0.02) | ||||||||
| z magnitude | 19.86 (0.09) | 19.86 (0.09) | 19.72 (0.08) | ||||||||
| G magnitude | 19.01 (0.02) | 19.05 | 19.01 (0.003) | ||||||||
| BP magnitude | 18.98 (0.02) | 18.87 | |||||||||
| RP magnitude | 19.24 (0.04) | 19.20 | |||||||||
| Pan g magnitude | 18.86 (0.007) | ||||||||||
| Pan r magnitude | 19.15 (0.02) | ||||||||||
| Pan i magnitude | 19.48 (0.01) | ||||||||||
| Pan z magnitude | 19.70 (0.03) | ||||||||||
| Pan y magnitude | 19.81 (0.02) | ||||||||||
| E(B-V) | 0.033 | ||||||||||
* Constant surface field
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