SDSS J155435.18+063949.1
All names: SDSS J155435.17+063949.1, GALEX J155435.1+063948, SDSS J155435.18+063949.10, Gaia DR3 4426995930709113344, Gaia EDR3 4426995930709113344, Gaia DR2 4426995930709113344, SDSS J155435.18+063949.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | MWDD HE | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 54 35.18 (0.3) | 15 54 35.18 | 15 54 35.18 (0.4) | 15 54 35.18 (0.3) | 15 54 35.18 | |||||||
| Declination | 06 39 49.12 (0.2) | 06 39 49.17 | 06 39 49.13 (0.3) | 06 39 49.14 (0.2) | 06 39 49.14 | |||||||
| Spectral type | DB | DB | DB | DB | ||||||||
| Effective temperature | [K] | 16431.0 | 15605.0 | 12718.0 | 15642.0 (418) | |||||||
| log(g) | [cgs] | 8.67 | 7.56 | 7.29 | 8.23 (0.3) | |||||||
| Mass | [M☉] | 1.015 | 0.377 | 0.278 | 0.724 (0.2) | |||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.1602 | ||||||||||
| log(H/He) | -5.382 | |||||||||||
| 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] | 1.49 (0.3) | 1.61 (0.4) | 1.49 (0.3) | ||||||||
| Distance | [pc] | 672.93 (150) | 622.27 (169) | 672.95 (150) | ||||||||
| Composition | He | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 0.243342713 (0.4) | -0.237787168 (0.9) | 0.243 (0.4) | ||||||||
| Proper motion (declination) | [mas/yr] | -1.176470055 (0.3) | -1.209079456 (0.7) | -1.176 (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 | 19.44 (0.03) | 19.44 (0.03) | 19.46 (0.03) | |||||||||
| g magnitude | 19.50 (0.01) | 19.50 (0.01) | 19.51 (0.02) | |||||||||
| r magnitude | 19.80 (0.02) | 19.80 (0.02) | 19.80 (0.02) | |||||||||
| i magnitude | 19.99 (0.03) | 19.98 (0.03) | 20.05 (0.04) | |||||||||
| z magnitude | 20.31 (0.1) | 20.31 (0.1) | 20.25 (0.1) | |||||||||
| G magnitude | 19.63 (0.03) | 19.70 | 19.63 (0.004) | |||||||||
| BP magnitude | 19.64 (0.03) | 19.66 | ||||||||||
| RP magnitude | 19.74 (0.06) | 19.83 | ||||||||||
| Pan g magnitude | 19.54 (0.008) | |||||||||||
| Pan r magnitude | 19.82 (0.008) | |||||||||||
| Pan i magnitude | 20.03 (0.01) | |||||||||||
| Pan z magnitude | 20.24 (0.03) | |||||||||||
| Pan y magnitude | 20.26 (0.001) | |||||||||||
| E(B-V) | 0.040 | |||||||||||
* Constant surface field
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