SDSS J082053.82+152313.2
All names: Gaia DR2 652438247031965056, J0820+1523, SDSS J082053.82+152313.2, Gaia DR3 652438247031965056, Gaia EDR3 652438247031965056, SDSS J082053.82+152313.1, WDJ082053.83+152313.41, GALEX J082053.8+152313
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 20 53.80 (0.07) | 08 20 53.82 | 08 20 53.80 (0.09) | 08 20 53.80 | 08 20 53.83 (0.07) | 08 20 53.80 | 08 20 53.82 | ||||||||
| Declination | 15 23 12.64 (0.04) | 15 23 13.22 | 15 23 12.66 (0.05) | 15 23 12.64 | 15 23 13.41 (0.04) | 15 23 12.66 | 15 23 13.20 | ||||||||
| Spectral type | DC | DC | DC | DC | DC | DC | DC | DA | |||||||
| Effective temperature | [K] | 9829.0 (82) | 9919.0 (71) | 10098.0 | 10049.0 | 10021.0 (152) | 10871.0 (279) | ||||||||
| log(g) | [cgs] | 8.12 (0.01) | 8.14 (0.01) | 8.30 | 8.23 | 8.18 (0.02) | 9.56 (0.3) | ||||||||
| Mass | [M☉] | 0.651 (0.01) | 0.668 (0.01) | 0.789 | 0.728 | 0.694 (0.02) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||||||
| Cooling age | [Gyr] | 0.8200 | 0.9238 | 0.8686 | |||||||||||
| log(H/He) | -4.6 | -4.6 | |||||||||||||
| 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] | 12.63 (0.08) | 12.68 (0.1) | 12.68 (0.1) | 12.63 | 12.63 (0.08) | 12.68 (0.1) | ||||||||
| Distance | [pc] | 79.17 (0.5) | 78.86 (0.8) | 78.86 (0.8) | 79.17 | 79.17 (0.5) | 78.86 (0.8) | ||||||||
| Composition | He | ||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -30.03705239 (0.08) | -30.07313828 (0.2) | -30.037 (0.08) | -30.07313828 | ||||||||||
| Proper motion (declination) | [mas/yr] | -48.09382875 (0.06) | -48.32920619 (0.1) | -48.094 (0.06) | -48.32920619 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | |||||||||||||||
| V magnitude | |||||||||||||||
| R magnitude | |||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | 17.06 (0.02) | ||||||||||||||
| H magnitude | |||||||||||||||
| K magnitude | |||||||||||||||
| u magnitude | 17.16 (0.008) | 17.16 (0.008) | 17.16 (0.008) | 17.17 (0.008) | 17.18 (0.02) | ||||||||||
| g magnitude | 17.03 (0.005) | 17.03 (0.005) | 17.04 (0.005) | 17.06 (0.01) | |||||||||||
| r magnitude | 17.17 (0.006) | 17.17 (0.006) | 17.16 (0.005) | 17.17 (0.01) | |||||||||||
| i magnitude | 17.31 (0.007) | 17.31 (0.007) | 17.32 (0.007) | 17.32 (0.01) | |||||||||||
| z magnitude | 17.51 (0.01) | 17.50 (0.01) | 17.48 (0.01) | 17.49 (0.02) | |||||||||||
| G magnitude | 17.06 (0.005) | 17.09 | 17.06 | 17.06 (0.003) | 17.09 | ||||||||||
| BP magnitude | 17.10 (0.005) | 17.08 | 17.08 | ||||||||||||
| RP magnitude | 17.00 (0.006) | 17.01 | 17.01 | ||||||||||||
| Pan g magnitude | 17.08 (0.004) | 17.08 (0.004) | |||||||||||||
| Pan r magnitude | 17.18 (0.004) | 17.18 (0.004) | |||||||||||||
| Pan i magnitude | 17.32 (0.004) | 17.32 (0.003) | |||||||||||||
| Pan z magnitude | 17.47 (0.007) | 17.47 (0.008) | |||||||||||||
| Pan y magnitude | 17.59 (0.01) | 17.59 (0.009) | |||||||||||||
| E(B-V) | 0.002 | ||||||||||||||
* Constant surface field
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