LB 9440
All names: GALEX J150809.8+215036, Gaia DR2 1261742816108467328, Gaia DR3 1261742816108467328, SDSS J150809.79+215037.1, SDSS J150809.79+215037.0, SDSS J150809.79+215037.10, USNO-B1.0 1118-00272440, Gaia EDR3 1261742816108467328, LB 9440
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Hardy et al. 2023a | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 08 09.78 (0.06) | 15 08 09.79 | 15 08 09.78 (0.1) | 15 08 09.78 | 15 08 09.80 (0.06) | |||||||
| Declination | 21 50 37.13 (0.06) | 21 50 37.05 | 21 50 37.13 (0.08) | 21 50 37.13 | 21 50 37.06 (0.06) | |||||||
| Spectral type | DAH | DAH: | DAH: | DA: | DAH | DAH | ||||||
| Effective temperature | [K] | 19994.5 (406) | 14318.0 | 58401.0 (1015) | 19329.0 (583) | |||||||
| log(g) | [cgs] | 8.17 (0.1) | 7.85 | 10.00 (1) | 8.23 (0.03) | |||||||
| Mass | [M☉] | 0.7255403258049394 (0.2) | 0.528 | 0.762 (0.02) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.1804 | ||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| log(C/H) | ||||||||||||
| log(N/H) | ||||||||||||
| log(O/H) | ||||||||||||
| log(Na/H) | ||||||||||||
| log(Mg/H) | ||||||||||||
| log(Al/H) | ||||||||||||
| log(Si/H) | ||||||||||||
| log(P/H) | ||||||||||||
| log(S/H) | ||||||||||||
| log(Sc/H) | ||||||||||||
| log(Ti/H) | ||||||||||||
| log(Cr/H) | ||||||||||||
| log(Mn/H) | ||||||||||||
| log(Fe/H) | ||||||||||||
| log(Ni/H) | ||||||||||||
| Parallax | [mas] | 6.03 (0.08) | 5.75 (0.1) | 6.03 | 6.03 (0.08) | |||||||
| Distance | [pc] | 165.89 (2) | 173.96 (4) | 165.89 | 165.89 (2) | |||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -14.95491434 (0.08) | -14.70401753 (0.2) | -14.955 (0.09) | ||||||||
| Proper motion (declination) | [mas/yr] | 4.403337344 (0.08) | 4.232970796 (0.2) | 4.403 (0.08) | ||||||||
| Variability | ||||||||||||
| Magnetic | yes | |||||||||||
| Bd | [MG] | 23.779842728013858 | ||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 16.40 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | 17.30 | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 17.25 (0.009) | 17.24 (0.01) | 17.25 (0.009) | |||||||||
| g magnitude | 17.20 (0.005) | 17.22 (0.02) | 17.20 (0.005) | |||||||||
| r magnitude | 17.51 (0.006) | 17.51 (0.01) | 17.51 (0.006) | |||||||||
| i magnitude | 17.78 (0.007) | 17.78 (0.01) | 17.78 (0.007) | |||||||||
| z magnitude | 18.06 (0.02) | 18.06 (0.02) | 18.06 (0.02) | |||||||||
| G magnitude | 17.36 (0.008) | 17.39 | 17.36 | 17.36 (0.003) | ||||||||
| BP magnitude | 17.31 (0.008) | 17.30 | ||||||||||
| RP magnitude | 17.49 (0.01) | 17.49 | ||||||||||
| Pan g magnitude | 17.25 (0.006) | |||||||||||
| Pan r magnitude | 17.53 (0.003) | |||||||||||
| Pan i magnitude | 17.80 (0.004) | |||||||||||
| Pan z magnitude | 18.03 (0.01) | |||||||||||
| Pan y magnitude | 18.17 (0.02) | |||||||||||
| E(B-V) | 0.037 | |||||||||||
* Constant surface field
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