WD 1557+004
All names: WD 1557+004, Gaia DR2 4409986554547744640, WDJ160000.77+001906.83, Gaia DR3 4409986554547744640, SDSS J160000.72+001906.7, SDSS J160000.72+001906.6, Gaia EDR3 4409986554547744640, SDSS J160000.77+001906.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 00 00.63 (0.1) | 16 00 00.64 (0.2) | 16 00 00.63 | 16 00 00.77 (0.1) | 16 00 00.64 | 16 00 00.38 | ||||||
| Declination | 00 19 06.37 (0.1) | 00 19 06.38 (0.1) | 00 19 06.37 | 00 19 06.82 (0.1) | 00 19 06.38 | 00 19 04.08 | ||||||
| Spectral type | DA | D | D | DA | D | ___9.3 | ||||||
| Effective temperature | [K] | 5442.0 (28) | 5473.0 | 5188.0 | 5457.0 (80) | |||||||
| log(g) | [cgs] | 8.04 (0.01) | 8.06 | 7.87 | 8.05 (0.03) | |||||||
| Mass | [M☉] | 0.609 (0.01) | 0.618 | 0.492 | 0.618 (0.03) | |||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 3.7650 | 3.9590 | |||||||||
| 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] | 16.46 (0.1) | 16.43 (0.2) | 16.46 | 16.46 (0.1) | 16.43 (0.2) | ||||||
| Distance | [pc] | 60.77 (0.5) | 60.85 (0.7) | 60.77 | 60.77 (0.5) | 60.85 (0.7) | ||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -130.1219352 (0.2) | -129.8726374 (0.3) | -130.122 (0.2) | -129.8726374 | |||||||
| Proper motion (declination) | [mas/yr] | -28.50383275 (0.1) | -28.69491541 (0.2) | -28.504 (0.1) | -28.69491541 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 17.31 (0.04) | |||||||||||
| H magnitude | 17.10 (0.04) | |||||||||||
| K magnitude | 16.98 (0.05) | |||||||||||
| u magnitude | 20.22 (0.05) | 20.14 (0.04) | 20.09 | |||||||||
| g magnitude | 18.94 (0.009) | 18.94 (0.009) | 18.95 | |||||||||
| r magnitude | 18.41 (0.008) | 18.41 (0.008) | 18.40 | |||||||||
| i magnitude | 18.18 (0.009) | 18.23 (0.009) | 18.24 | |||||||||
| z magnitude | 18.17 (0.03) | 18.15 (0.03) | 18.17 | |||||||||
| G magnitude | 18.43 (0.03) | 18.45 | 18.43 | 18.43 (0.003) | 18.45 | |||||||
| BP magnitude | 18.81 (0.03) | 18.80 | 18.80 | |||||||||
| RP magnitude | 17.90 (0.02) | 17.90 | 17.90 | |||||||||
| Pan g magnitude | 18.86 (0.009) | |||||||||||
| Pan r magnitude | 18.40 (0.006) | |||||||||||
| Pan i magnitude | 18.22 (0.004) | |||||||||||
| Pan z magnitude | 18.17 (0.01) | |||||||||||
| Pan y magnitude | 18.16 (0.01) | |||||||||||
| E(B-V) | 0.002 | |||||||||||
* Constant surface field
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