SDSS J152041.16+243019.4
All names: GALEX J152041.1+243019, SDSS J152041.16+243019.5, SDSS J152041.16+243019.48, SDSS J152041.16+243019.4, EQ J1520+2430, Gaia EDR3 1264004923842939008, Gaia DR2 1264004923842939008, Gaia DR3 1264004923842939008
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Bedard et al. 2020 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 20 41.15 (0.08) | 15 20 41.16 | 15 20 41.15 (0.09) | 15 20 41.15 | 15 20 41.17 (0.08) | |||||||
| Declination | 24 30 19.50 (0.09) | 24 30 19.50 | 24 30 19.50 (0.1) | 24 30 19.50 | 24 30 19.53 (0.09) | |||||||
| Spectral type | DAB | DAB | DAB | DA | DAB | DA+MS | ||||||
| Effective temperature | [K] | 40398.0 (1802) | 13796.0 | 73900.0 (2601) | 25918.0 (1248) | |||||||
| log(g) | [cgs] | 7.57 (0.2) | 6.74 | 7.80 (0.1) | 7.53 (0.08) | |||||||
| Mass | [M☉] | 0.45 (0.06) | 0.201 | 0.423 (0.04) | ||||||||
| log(Luminosity) | [L☉] | -0.10 (0.1) | ||||||||||
| Cooling age | [Gyr] | 0.0017 (0.001) | ||||||||||
| 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] | 2.00 (0.1) | 1.83 (0.2) | 2.00 | 2.00 (0.1) | |||||||
| Distance | [pc] | 501.22 (33) | 545.86 (50) | 501.22 | 501.23 (33) | |||||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -12.99178909 (0.1) | -13.03098979 (0.3) | -12.992 (0.1) | ||||||||
| Proper motion (declination) | [mas/yr] | -1.413856618 (0.1) | -1.707502894 (0.3) | -1.414 (0.1) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | |||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 17.66 (0.01) | 17.68 (0.02) | 17.66 (0.01) | |||||||||
| g magnitude | 17.93 (0.005) | 17.93 (0.02) | 17.93 (0.005) | |||||||||
| r magnitude | 18.36 (0.008) | 18.36 (0.01) | 18.36 (0.008) | |||||||||
| i magnitude | 18.66 (0.01) | 18.68 (0.02) | 18.66 (0.01) | |||||||||
| z magnitude | 18.77 (0.05) | 18.78 (0.05) | 18.77 (0.05) | |||||||||
| G magnitude | 18.19 (0.01) | 18.23 | 18.19 | 18.19 (0.003) | ||||||||
| BP magnitude | 18.09 (0.01) | 18.06 | ||||||||||
| RP magnitude | 18.38 (0.02) | 18.33 | ||||||||||
| Pan g magnitude | 18.03 (0.01) | |||||||||||
| Pan r magnitude | 18.42 (0.02) | |||||||||||
| Pan i magnitude | 18.69 (0.006) | |||||||||||
| Pan z magnitude | 18.85 (0.01) | |||||||||||
| Pan y magnitude | 18.92 (0.03) | |||||||||||
| E(B-V) | 0.047 | |||||||||||
* Constant surface field
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