SDSS J202838.98+771525.1
All names: SDSS J202838.98+771525.1, SDSS J202838.97+771525.2, Gaia EDR3 2290354326353318784, Gaia DR3 2290354326353318784, Gaia DR2 2290354326353318784, GALEX J202839.0+771525, SDSS J202838.97+771525.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 28 38.89 (0.07) | 20 28 38.98 | 20 28 38.90 (0.09) | 20 28 38.89 | 20 28 39.01 (0.07) | 20 28 38.97 | |||||
| Declination | 77 15 24.95 (0.07) | 77 15 25.14 | 77 15 24.96 (0.09) | 77 15 24.95 | 77 15 25.23 (0.07) | 77 15 25.16 | |||||
| Spectral type | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 13598.0 | 15865.0 (532) | 15919.0 (166) | |||||||
| log(g) | [cgs] | 7.84 | 8.01 (0.03) | 7.91 (0.03) | |||||||
| Mass | [M☉] | 0.522 | 0.621 (0.03) | 0.568 (0.01) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.2103 | |||||||||
| 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] | 4.80 (0.07) | 4.81 (0.1) | 4.80 | 4.80 (0.07) | ||||||
| Distance | [pc] | 208.26 (3) | 207.87 (4) | 208.26 | 208.26 (3) | ||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -23.06831964 (0.09) | -22.98649295 (0.2) | -23.068 (0.09) | |||||||
| Proper motion (declination) | [mas/yr] | -17.03542443 (0.08) | -17.09806262 (0.2) | -17.035 (0.08) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 18.00 (0.01) | 18.00 (0.01) | 18.00 (0.03) | ||||||||
| g magnitude | 17.70 (0.005) | 17.70 (0.005) | 17.71 (0.01) | ||||||||
| r magnitude | 17.94 (0.007) | 17.94 (0.007) | 17.93 (0.01) | ||||||||
| i magnitude | 18.25 (0.01) | 18.25 (0.01) | 18.26 (0.02) | ||||||||
| z magnitude | 18.48 (0.04) | 18.48 (0.04) | 18.48 (0.04) | ||||||||
| G magnitude | 17.83 (0.009) | 17.86 | 17.83 | 17.83 (0.003) | |||||||
| BP magnitude | 17.81 (0.009) | 17.78 | |||||||||
| RP magnitude | 17.96 (0.02) | 17.95 | |||||||||
| Pan g magnitude | 17.74 (0.01) | ||||||||||
| Pan r magnitude | 17.99 (0.004) | ||||||||||
| Pan i magnitude | 18.25 (0.007) | ||||||||||
| Pan z magnitude | 18.48 (0.01) | ||||||||||
| Pan y magnitude | 18.61 (0.03) | ||||||||||
| E(B-V) | 0.015 | ||||||||||
* Constant surface field
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