SDSS J155424.92+082144.4
All names: SDSS J155424.92+082144.4, Gaia DR2 4454396859985489152, GALEX J155424.9+082144, SDSS J155424.91+082144.4, Gaia EDR3 4454396859985489152, Gaia DR3 4454396859985489152
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 54 24.88 (0.2) | 15 54 24.92 | 15 54 24.88 (0.3) | 15 54 24.88 | 15 54 24.93 (0.2) | 15 54 24.92 | ||||||
| Declination | 08 21 44.09 (0.2) | 08 21 44.41 | 08 21 44.10 (0.2) | 08 21 44.09 | 08 21 44.43 (0.2) | 08 21 44.40 | ||||||
| Spectral type | DC | DC | DA: | DC | DC | DC | ||||||
| Effective temperature | [K] | 9038.0 | 8813.0 | 9140.0 (448) | 10118.0 (53) | |||||||
| log(g) | [cgs] | 8.24 | 8.16 | 8.29 (0.09) | 9.16 (0.6) | |||||||
| Mass | [M☉] | 0.75 | 0.679 | 0.779 (0.08) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 1.1170 | 1.0990 | |||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 6.49 (0.2) | 6.28 (0.3) | 6.49 | 6.49 (0.2) | |||||||
| Distance | [pc] | 153.99 (6) | 159.36 (8) | 153.99 | 153.99 (6) | |||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -43.13991442 (0.2) | -42.83743126 (0.5) | -43.14 (0.2) | ||||||||
| Proper motion (declination) | [mas/yr] | -21.2070443 (0.2) | -21.12142949 (0.3) | -21.207 (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 | 19.21 (0.03) | 19.21 (0.03) | 19.23 (0.03) | |||||||||
| g magnitude | 18.93 (0.01) | 18.93 (0.01) | 18.95 (0.02) | |||||||||
| r magnitude | 18.95 (0.01) | 18.95 (0.01) | 18.98 (0.02) | |||||||||
| i magnitude | 19.02 (0.01) | 19.02 (0.01) | 19.04 (0.02) | |||||||||
| z magnitude | 19.08 (0.04) | 19.08 (0.04) | 19.09 (0.05) | |||||||||
| G magnitude | 18.89 (0.04) | 18.92 | 18.89 | 18.89 (0.003) | ||||||||
| BP magnitude | 18.95 (0.04) | 18.97 | ||||||||||
| RP magnitude | 18.74 (0.05) | 18.72 | ||||||||||
| Pan g magnitude | 18.96 (0.007) | |||||||||||
| Pan r magnitude | 18.95 (0.009) | |||||||||||
| Pan i magnitude | 19.06 (0.005) | |||||||||||
| Pan z magnitude | 19.16 (0.01) | |||||||||||
| Pan y magnitude | 19.32 (0.04) | |||||||||||
| E(B-V) | 0.021 | |||||||||||
* Constant surface field
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