WD 1020+640
All names: SDSS J102356.10+634833.7, Gaia DR2 1052563683861162880, USNO-B1.0 1538-00175532, LP 62-159, NLTT 24183, LSPM J1023+6348, J1023+6348, WDJ102356.12+634833.82, Gaia EDR3 1052563683861162880, WD 1020+640, Gaia DR3 1052563683861162880, SDSS J102356.10+634833.8, SDSS J102356.09+634833.7
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | MWDD H | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 10 23 55.30 (0.06) | 10 23 56.10 | 10 23 55.32 (0.08) | 10 23 55.30 | 10 23 56.12 (0.06) | 10 23 55.32 | 10 23 56.28 | |||||||
| Declination | 63 48 30.34 (0.07) | 63 48 33.72 | 63 48 30.45 (0.1) | 63 48 30.34 | 63 48 33.82 (0.07) | 63 48 30.45 | 63 48 29.88 | |||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA8.1 | |||||||
| Effective temperature | [K] | 6117.0 (34) | 6153.0 (21) | 6121.0 (22) | 6117.0 | 6256.0 (52) | ||||||||
| log(g) | [cgs] | 7.99 (0.01) | 8.00 (0.01) | 7.98 (0.01) | 7.98 | 8.06 (0.02) | ||||||||
| Mass | [M☉] | 0.579 (0.01) | 0.587 (0.01) | 0.579 (0.01) | 0.579 | 0.625 (0.01) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 2.1800 | 2.0680 | |||||||||||
| 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] | 16.89 (0.1) | 16.83 (0.1) | 16.83 (0.1) | 16.89 | 16.89 (0.1) | 16.83 (0.1) | |||||||
| Distance | [pc] | 59.22 (0.3) | 59.42 (0.5) | 59.43 (0.5) | 59.22 | 59.22 (0.3) | 59.43 (0.5) | |||||||
| Composition | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -339.7456665 (0.08) | -339.7299515 (0.1) | -339.746 (0.07) | -339.7299515 | |||||||||
| Proper motion (declination) | [mas/yr] | -217.5313224 (0.08) | -217.4831883 (0.2) | -217.531 (0.08) | -217.4831883 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 18.40 | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | 17.80 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | ||||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 18.92 (0.02) | 18.92 (0.02) | 18.92 (0.02) | 18.92 (0.02) | 18.94 | |||||||||
| g magnitude | 18.11 (0.006) | 18.11 (0.006) | 18.11 (0.006) | 18.08 | ||||||||||
| r magnitude | 17.80 (0.006) | 17.79 (0.006) | 17.79 (0.006) | 17.74 | ||||||||||
| i magnitude | 17.66 (0.007) | 17.65 (0.007) | 17.65 (0.007) | 17.65 | ||||||||||
| z magnitude | 17.64 (0.02) | 17.62 (0.02) | 17.62 (0.02) | 17.65 | ||||||||||
| G magnitude | 17.80 (0.008) | 17.82 | 17.80 | 17.80 (0.003) | 17.82 | |||||||||
| BP magnitude | 18.09 (0.008) | 18.10 | 18.10 | |||||||||||
| RP magnitude | 17.38 (0.007) | 17.38 | 17.38 | |||||||||||
| Pan g magnitude | 18.09 (0.003) | 18.09 (0.003) | ||||||||||||
| Pan r magnitude | 17.79 (0.004) | 17.79 (0.004) | ||||||||||||
| Pan i magnitude | 17.69 (0.005) | 17.69 (0.005) | ||||||||||||
| Pan z magnitude | 17.68 (0.007) | 17.68 (0.005) | ||||||||||||
| Pan y magnitude | 17.67 (0.03) | 17.67 (0.03) | ||||||||||||
| E(B-V) | 0.003 | |||||||||||||
* Constant surface field
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