SDSS J164336.39+233220.6
All names: SDSS J164336.40+233220.7, WD 1641+236, Gaia DR3 1299552959402968192, GALEX J164336.4+233220, Gaia EDR3 1299552959402968192, SDSS J164336.39+233220.6, SDSS J164336.39+233220.5, Gaia DR2 1299552959402968192, SDSS J164336.40+233220.5
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | MWDD H | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 43 36.40 (0.1) | 16 43 36.40 | 16 43 36.40 (0.2) | 16 43 36.40 (0.1) | 16 43 36.40 | 16 43 36.26 | 16 43 36.40 | ||||||
| Declination | 23 32 20.53 (0.2) | 23 32 20.58 | 23 32 20.53 (0.3) | 23 32 20.59 (0.2) | 23 32 20.67 | 23 32 15.72 | 23 32 20.67 | ||||||
| Spectral type | DA | DA | DA | DA_auto | DA | DAH: | DA | ||||||
| Effective temperature | [K] | 30772.0 (926) | 17099.0 | 29099.0 (638) | 29116.0 (690) | ||||||||
| log(g) | [cgs] | 7.75 (0.2) | 7.26 | 8.09 (0.1) | 7.97 (0.2) | ||||||||
| Mass | [M☉] | 0.52 (0.1) | 0.31 | ||||||||||
| log(Luminosity) | [L☉] | -0.68 (0.2) | |||||||||||
| Cooling age | [Gyr] | 0.0078 (0.002) | 0.0605 | ||||||||||
| 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] | 1.30 (0.3) | 1.17 (0.5) | 1.30 (0.3) | |||||||||
| Distance | [pc] | 767.08 (183) | 857.85 (332) | 767.11 (183) | |||||||||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.033344351 (0.2) | 2.350160901 (0.7) | 2.033 (0.2) | 5.7 | ||||||||
| Proper motion (declination) | [mas/yr] | -4.058860268 (0.3) | -3.878955859 (0.7) | -4.059 (0.3) | 5.4 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 19.31 (0.02) | 19.31 (0.02) | 19.29 (0.03) | 19.29 | 19.29 (0.03) | ||||||||
| g magnitude | 19.42 (0.01) | 19.42 (0.01) | 19.42 (0.02) | 19.42 | 19.42 (0.02) | ||||||||
| r magnitude | 19.80 (0.02) | 19.80 (0.02) | 19.78 (0.02) | 19.78 | 19.79 (0.02) | ||||||||
| i magnitude | 20.16 (0.03) | 20.16 (0.03) | 20.16 (0.03) | 20.16 | 20.16 (0.03) | ||||||||
| z magnitude | 20.42 (0.1) | 20.42 (0.1) | 20.39 (0.1) | 20.39 | 20.38 (0.1) | ||||||||
| G magnitude | 19.63 (0.02) | 19.71 | 19.63 (0.004) | ||||||||||
| BP magnitude | 19.59 (0.02) | 19.48 | |||||||||||
| RP magnitude | 19.79 (0.04) | 19.78 | |||||||||||
| Pan g magnitude | 19.48 (0.01) | ||||||||||||
| Pan r magnitude | 19.82 (0.01) | ||||||||||||
| Pan i magnitude | 20.15 (0.02) | ||||||||||||
| Pan z magnitude | 20.31 (0.04) | ||||||||||||
| Pan y magnitude | 20.31 (0.1) | ||||||||||||
| E(B-V) | 0.035 | ||||||||||||
* Constant surface field
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