SDSS J122739.16+661224.3
All names: GALEX J122739.1+661224, SDSS J122739.17+661224.43, SDSS J122739.16+661224.4, WDS J12277+6612A, SDSS J122739.17+661224.4, Gaia EDR3 1680759859865814656, ** SLN 25A, SDSS J122739.16+661224.3, Gaia DR2 1680759859865814656, USNO-B1.0 1562-00137468, Gaia DR3 1680759859865814656
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Hardy et al. 2023a | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2016 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 27 39.16 (0.08) | 12 27 39.16 | 12 27 39.16 (0.1) | 12 27 39.16 | 12 27 39.17 (0.08) | |||||||
| Declination | 66 12 24.35 (0.07) | 66 12 24.37 | 66 12 24.35 (0.08) | 66 12 24.35 | 66 12 24.39 (0.07) | |||||||
| Spectral type | DAH | DAH | DAH | DA: | DAH | DAH | ||||||
| Effective temperature | [K] | 22843.2 (586) | 18174.0 | 20000.0 (1000) | 23043.0 (981) | |||||||
| log(g) | [cgs] | 8.34 (0.1) | 8.12 | 9.25 (1) | 8.33 (0.04) | |||||||
| Mass | [M☉] | 0.8317476265662246 (0.2) | 0.69 | 1.256 (0.4) | 0.831 (0.04) | |||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.1299 | ||||||||||
| 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] | 4.19 (0.08) | 4.29 (0.1) | 4.19 | 4.19 (0.08) | |||||||
| Distance | [pc] | 238.91 (5) | 233.20 (6) | 238.91 | 238.91 (5) | |||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -3.750795466 (0.1) | -3.638004178 (0.2) | -3.751 (0.1) | ||||||||
| Proper motion (declination) | [mas/yr] | -2.617929951 (0.09) | -2.701548761 (0.2) | -2.618 (0.09) | ||||||||
| Variability | ||||||||||||
| Magnetic | yes | |||||||||||
| Bd | [MG] | 24.666109367002427 | ||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 17.60 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | 17.90 | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 17.73 (0.01) | 17.74 (0.01) | 17.73 (0.01) | |||||||||
| g magnitude | 17.82 (0.005) | 17.84 (0.02) | 17.81 (0.005) | |||||||||
| r magnitude | 18.15 (0.007) | 18.15 (0.02) | 18.15 (0.007) | |||||||||
| i magnitude | 18.46 (0.01) | 18.45 (0.01) | 18.46 (0.01) | |||||||||
| z magnitude | 18.71 (0.04) | 18.69 (0.04) | 18.70 (0.04) | |||||||||
| G magnitude | 17.97 (0.01) | 18.00 | 17.97 | 17.97 (0.003) | ||||||||
| BP magnitude | 17.91 (0.01) | 17.89 | ||||||||||
| RP magnitude | 18.18 (0.02) | 18.20 | ||||||||||
| Pan g magnitude | 17.83 (0.009) | |||||||||||
| Pan r magnitude | 18.16 (0.008) | |||||||||||
| Pan i magnitude | 18.47 (0.01) | |||||||||||
| Pan z magnitude | 18.72 (0.01) | |||||||||||
| Pan y magnitude | 18.84 (0.04) | |||||||||||
| E(B-V) | 0.016 | |||||||||||
* Constant surface field
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