HS 1637+1940
All names: 2MASS J16401027+1934456, GALEX J164010.3+193446, TIC 329151398, HS 1637+1940, Gaia DR2 4563476938972834816, SDSS J164010.33+193446.1, SDSS J164010.31+193445.8, SDSS J164010.31+193445.9, SDSS J164010.33+193446.2, Gaia EDR3 4563476938973503616, SDSS J164010.33+193446.20, Gaia DR3 4563476938973503616
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2015 | Gianninas et al. 2011 | Mukadam et al. 2004 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 40 10.34 (0.05) | 16 40 10.32 | 16 40 10.32 | 16 40 10.34 (0.05) | 16 40 10.34 | 16 40 10.31 (0.05) | ||||||||
| Declination | 19 34 46.38 (0.05) | 19 34 45.90 | 19 34 45.90 | 19 34 46.37 (0.05) | 19 34 46.38 | 19 34 45.78 (0.05) | ||||||||
| Spectral type | DA | DA | DA | DA | DA2.6 | DA | ||||||||
| Effective temperature | [K] | 11481.0 | 19866.0 (79) | 19620.0 (384) | 12000.0 | 15085.0 (283) | ||||||||
| log(g) | [cgs] | 7.28 | 7.91 (0.01) | 7.92 (0.06) | 7.62 (0.02) | |||||||||
| Mass | [M☉] | 0.29 | 0.5770000000000001 (0.004) | 0.58 (0.03) | 0.421 (0.01) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.2049 | ||||||||||||
| 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] | 5.43 (0.07) | 5.33 (0.08) | 5.43 | 5.43 (0.07) | |||||||||
| Distance | [pc] | 184.33 (2) | 187.68 (3) | 159.00 | 184.33 | 184.33 (2) | ||||||||
| Composition | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 26.22531983 (0.06) | 26.14144971 (0.1) | 26.225 (0.06) | ||||||||||
| Proper motion (declination) | [mas/yr] | 38.01107974 (0.06) | 37.935364 (0.1) | 38.011 (0.06) | ||||||||||
| Variability | NOV | NOV | ||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | ||||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.79 (0.2) | |||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 17.30 (0.009) | 17.30 (0.009) | 17.32 (0.02) | 17.30 (0.009) | ||||||||||
| g magnitude | 17.03 (0.005) | 17.03 (0.005) | 17.06 (0.02) | 17.03 (0.005) | ||||||||||
| r magnitude | 17.28 (0.006) | 17.28 (0.006) | 17.30 (0.01) | 17.29 (0.006) | ||||||||||
| i magnitude | 17.49 (0.007) | 17.49 (0.007) | 17.50 (0.02) | 17.49 (0.007) | ||||||||||
| z magnitude | 17.71 (0.02) | 17.71 (0.02) | 17.73 (0.02) | 17.71 (0.02) | ||||||||||
| G magnitude | 17.17 (0.004) | 17.18 | 17.17 | 17.17 (0.003) | ||||||||||
| BP magnitude | 17.15 (0.004) | 17.12 | ||||||||||||
| RP magnitude | 17.20 (0.008) | 17.21 | ||||||||||||
| Pan g magnitude | 17.08 (0.004) | |||||||||||||
| Pan r magnitude | 17.30 (0.004) | |||||||||||||
| Pan i magnitude | 17.52 (0.004) | |||||||||||||
| Pan z magnitude | 17.70 (0.01) | |||||||||||||
| Pan y magnitude | 17.83 (0.03) | |||||||||||||
| E(B-V) | 0.039 | |||||||||||||
* Constant surface field
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