WD 1659+647
All names: SDSS J165923.87+643809.3, Gaia DR3 1632298163316916352, Gaia EDR3 1632298163316916352, SDSS J165923.86+643809.3, SDSS J165923.88+643809.4, SDSS J165923.87+643809.4, SDSS J165923.88+643809.5, WD 1659+647, Gaia DR2 1632298163316916352
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Tremblay et al. 2011 | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Kleinman et al. 2004 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 59 23.89 (0.1) | 16 59 23.88 | 16 59 23.89 (0.2) | 16 59 23.89 | 16 59 23.88 (0.1) | 16 59 23.88 | 16 59 22.56 | 16 59 23.87 | 16 59 23.87 | ||||||
| Declination | 64 38 09.72 (0.1) | 64 38 09.50 | 64 38 09.71 (0.2) | 64 38 09.72 | 64 38 09.45 (0.1) | 64 38 09.45 | 64 38 07.44 | 64 38 09.39 | 64 38 09.38 | ||||||
| Spectral type | DA | DA | DA | DA | DA | DA2.6 | DA | DA | |||||||
| Effective temperature | [K] | 17792.0 | 20970.0 (230) | 20436.0 (1075) | 19695.0 (154) | 20274.0 (147) | 19757.0 (155) | ||||||||
| log(g) | [cgs] | 8.10 | 8.24 (0.03) | 8.24 (0.05) | 8.16 (0.02) | 8.23 (0.02) | 8.18 (0.02) | ||||||||
| Mass | [M☉] | 0.675 | 0.77 (0.02) | 0.766 (0.04) | 0.751 (0.01) | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||
| Cooling age | [Gyr] | 0.1337 | 0.1047 | ||||||||||||
| 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] | 3.76 (0.1) | 3.73 (0.1) | 3.76 | 3.76 (0.1) | ||||||||||
| Distance | [pc] | 265.73 (8) | 268.29 (11) | 265.73 | 265.73 (8) | ||||||||||
| Composition | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 3.753966248 (0.2) | 3.570435627 (0.3) | 3.754 (0.2) | 8.6 | 6.0 | |||||||||
| Proper motion (declination) | [mas/yr] | 17.19034781 (0.2) | 17.15606002 (0.3) | 17.19 (0.2) | 14.3 | 18.0 | |||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | |||||||||||||||
| V magnitude | |||||||||||||||
| R magnitude | |||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | |||||||||||||||
| H magnitude | |||||||||||||||
| K magnitude | |||||||||||||||
| u magnitude | 18.12 (0.01) | 18.12 (0.01) | 18.11 (0.02) | 18.13 | 18.08 (0.02) | 18.13 (0.02) | |||||||||
| g magnitude | 18.09 (0.006) | 18.09 (0.006) | 18.15 (0.02) | 18.12 | 18.14 (0.02) | 18.12 (0.02) | |||||||||
| r magnitude | 18.44 (0.008) | 18.44 (0.008) | 18.45 (0.02) | 18.46 | 18.45 (0.02) | 18.46 (0.02) | |||||||||
| i magnitude | 18.76 (0.01) | 18.76 (0.01) | 18.73 (0.02) | 18.73 | 18.72 (0.02) | 18.73 (0.02) | |||||||||
| z magnitude | 18.98 (0.04) | 18.98 (0.04) | 19.10 (0.05) | 19.11 | 19.07 (0.05) | 19.11 (0.05) | |||||||||
| G magnitude | 18.27 (0.01) | 18.31 | 18.27 | 18.27 (0.003) | |||||||||||
| BP magnitude | 18.21 (0.01) | 18.19 | |||||||||||||
| RP magnitude | 18.45 (0.02) | 18.45 | |||||||||||||
| Pan g magnitude | 18.14 (0.004) | ||||||||||||||
| Pan r magnitude | 18.46 (0.003) | ||||||||||||||
| Pan i magnitude | 18.75 (0.004) | ||||||||||||||
| Pan z magnitude | 19.02 (0.01) | ||||||||||||||
| Pan y magnitude | 19.19 (0.03) | ||||||||||||||
| E(B-V) | 0.020 | ||||||||||||||
* Constant surface field
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