GALEX 2686760025211276549
All names: SDSS J122112.33+402455.3, Gaia DR3 1533259344207207680, SDSS J122112.33+402455.4, Gaia DR2 1533259344207207680, GALEX 2686760025211276549, SDSS J122112.33+402455.40, USNO-A2.0 1275-08074879, Gaia EDR3 1533259344207207680
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | MWDD HE | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 21 12.30 (0.2) | 12 21 12.33 | 12 21 12.30 (0.2) | 12 21 12.34 (0.2) | 12 21 12.33 | ||||||
| Declination | 40 24 55.22 (0.2) | 40 24 55.37 | 40 24 55.23 (0.2) | 40 24 55.39 (0.2) | 40 24 55.38 | ||||||
| Spectral type | DB | DB | DB | DB | |||||||
| Effective temperature | [K] | 15570.0 | 15753.0 | 15839.0 (338) | |||||||
| log(g) | [cgs] | 8.19 | 8.07 | 8.48 (0.2) | |||||||
| Mass | [M☉] | 0.704 | 0.63 | 0.886 (0.1) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.1916 | |||||||||
| log(H/He) | <-5.907 | ||||||||||
| 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] | 2.39 (0.3) | 2.29 (0.4) | 2.29 (0.4) | |||||||
| Distance | [pc] | 418.92 (51) | 436.82 (78) | 436.81 (78) | |||||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -30.75655518 (0.3) | -31.12731379 (0.4) | -31.127 (0.4) | |||||||
| Proper motion (declination) | [mas/yr] | -11.17234496 (0.3) | -10.88294165 (0.4) | -10.883 (0.4) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 18.40 (0.3) | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 18.80 (0.3) | ||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 19.22 (0.02) | 19.22 (0.02) | 19.26 (0.03) | ||||||||
| g magnitude | 19.32 (0.01) | 19.32 (0.01) | 19.32 (0.02) | ||||||||
| r magnitude | 19.63 (0.01) | 19.63 (0.01) | 19.61 (0.04) | ||||||||
| i magnitude | 19.87 (0.02) | 19.87 (0.02) | 19.89 (0.03) | ||||||||
| z magnitude | 19.95 (0.1) | 19.95 (0.1) | 19.93 (0.1) | ||||||||
| G magnitude | 19.46 (0.04) | 19.51 | 19.51 (0.004) | ||||||||
| BP magnitude | 19.46 (0.04) | 19.38 | |||||||||
| RP magnitude | 19.57 (0.06) | 19.48 | |||||||||
| Pan g magnitude | 19.32 (0.02) | ||||||||||
| Pan r magnitude | 19.65 (0.02) | ||||||||||
| Pan i magnitude | 19.89 (0.008) | ||||||||||
| Pan z magnitude | 20.10 (0.02) | ||||||||||
| Pan y magnitude | 19.99 (0.1) | ||||||||||
| E(B-V) | 0.018 | ||||||||||
* Constant surface field
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