SDSS J082115.71+321844.6
All names: SDSS J082115.71+321844.6, Gaia DR3 901397533874917120, SDSS J082115.71+321844.61, SDSS J082115.71+321844.8, Gaia DR2 901397533874917120, GALEX J082115.7+321844, Gaia EDR3 901397533874917120
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 21 15.69 (0.3) | 08 21 15.71 | 08 21 15.69 (0.3) | 08 21 15.69 | 08 21 15.71 (0.3) | |||||||
| Declination | 32 18 44.51 (0.2) | 32 18 44.81 | 32 18 44.52 (0.3) | 32 18 44.51 | 32 18 44.84 (0.2) | |||||||
| Spectral type | DC | DC | DC | DA | DC | DA | ||||||
| Effective temperature | [K] | 9316.0 | 9241.0 | 11470.0 (710) | 9481.0 (649) | |||||||
| log(g) | [cgs] | 8.25 | 8.20 | 8.54 (0.2) | 8.17 (0.1) | |||||||
| Mass | [M☉] | 0.757 | 0.705 | 0.701 (0.1) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 1.0490 | 1.0310 | |||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 4.68 (0.4) | 5.01 (0.5) | 4.68 | 4.68 (0.4) | |||||||
| Distance | [pc] | 213.55 (17) | 199.47 (18) | 213.55 | 213.55 (17) | |||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -17.9343255 (0.4) | -17.48169543 (0.7) | -17.934 (0.4) | ||||||||
| Proper motion (declination) | [mas/yr] | -20.71107672 (0.3) | -20.88093785 (0.5) | -20.711 (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 | 19.42 (0.03) | 19.42 (0.03) | 19.42 (0.03) | |||||||||
| g magnitude | 19.28 (0.01) | 19.28 (0.01) | 19.28 (0.01) | |||||||||
| r magnitude | 19.39 (0.01) | 19.39 (0.01) | 19.39 (0.01) | |||||||||
| i magnitude | 19.37 (0.02) | 19.37 (0.02) | 19.38 (0.02) | |||||||||
| z magnitude | 19.66 (0.05) | 19.66 (0.05) | 19.66 (0.05) | |||||||||
| G magnitude | 19.28 (0.04) | 19.34 | 19.28 | 19.28 (0.004) | ||||||||
| BP magnitude | 19.33 (0.04) | 19.28 | ||||||||||
| RP magnitude | 19.14 (0.05) | 19.12 | ||||||||||
| Pan g magnitude | 19.30 (0.02) | |||||||||||
| Pan r magnitude | 19.38 (0.01) | |||||||||||
| Pan i magnitude | 19.53 (0.01) | |||||||||||
| Pan z magnitude | 19.67 (0.04) | |||||||||||
| Pan y magnitude | 19.57 (0.03) | |||||||||||
| E(B-V) | 0.012 | |||||||||||
* Constant surface field
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