WD 1445+546
All names: SDSS J144701.84+542744.5, WD 1445+546, WDJ144701.91+542744.46, SDSS J144701.85+542744.5, Gaia DR2 1606475479904001792, LSPM J1447+5427, Gaia EDR3 1606475479904001792, J1447+5427, USNO-B1.0 1444-00236388, Gaia DR3 1606475479904001792
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | 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 | 14 47 01.48 (0.2) | 14 47 01.49 (0.2) | 14 47 01.48 | 14 47 01.92 (0.2) | 14 47 01.49 | 14 47 01.49 | |||||||
| Declination | 54 27 44.88 (0.2) | 54 27 44.87 (0.2) | 54 27 44.88 | 54 27 44.45 (0.2) | 54 27 44.87 | 54 27 42.48 | |||||||
| Spectral type | DC | DC | DC | DC | DC | DC | DC10.3 | ||||||
| Effective temperature | [K] | 4755.0 (36) | 4839.0 (37) | 4796.0 | 4490.0 | 4780.0 (69) | |||||||
| log(g) | [cgs] | 7.21 (0.03) | 7.34 (0.03) | 7.28 | 7.02 | 7.24 (0.05) | |||||||
| Mass | [M☉] | 0.224 (0.01) | 0.265 (0.01) | 0.243 | 0.166 | 0.233 (0.02) | |||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 2.1300 | 2.0680 | 1.9970 | |||||||||
| 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] | 12.76 (0.2) | 12.91 (0.2) | 12.91 (0.2) | 12.76 | 12.76 (0.2) | 12.91 (0.2) | ||||||
| Distance | [pc] | 78.37 (1) | 77.46 (1) | 77.46 (1) | 78.37 | 78.37 (1) | 77.46 (1) | ||||||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -238.6936251 (0.2) | -235.4667135 (0.4) | -238.694 (0.2) | -235.4667135 | ||||||||
| Proper motion (declination) | [mas/yr] | 26.62896154 (0.3) | 26.34756572 (0.4) | 26.629 (0.3) | 26.34756572 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 20.40 | ||||||||||||
| V magnitude | |||||||||||||
| R magnitude | 18.80 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 17.26 (0.07) | 17.26 (0.07) | |||||||||||
| H magnitude | 17.20 (0.07) | 17.20 (0.07) | |||||||||||
| K magnitude | 17.07 (0.06) | 17.07 (0.06) | |||||||||||
| u magnitude | 21.27 (0.1) | 21.28 (0.1) | 21.28 (0.1) | 21.23 | |||||||||
| g magnitude | 19.43 (0.01) | 19.43 (0.01) | 19.46 | ||||||||||
| r magnitude | 18.63 (0.01) | 18.63 (0.01) | 18.64 | ||||||||||
| i magnitude | 18.35 (0.01) | 18.35 (0.01) | 18.36 | ||||||||||
| z magnitude | 18.24 (0.03) | 18.24 (0.03) | 18.25 | ||||||||||
| G magnitude | 18.69 (0.03) | 18.72 | 18.69 | 18.69 (0.003) | 18.72 | ||||||||
| BP magnitude | 19.24 (0.03) | 19.24 | 19.24 | ||||||||||
| RP magnitude | 18.02 (0.01) | 17.99 | 17.99 | ||||||||||
| Pan g magnitude | 19.31 (0.01) | 19.31 (0.01) | |||||||||||
| Pan r magnitude | 18.62 (0.01) | 18.62 (0.01) | |||||||||||
| Pan i magnitude | 18.32 (0.005) | 18.32 (0.006) | |||||||||||
| Pan z magnitude | 18.24 (0.01) | 18.24 (0.01) | |||||||||||
| Pan y magnitude | 18.19 (0.02) | 18.19 (0.02) | |||||||||||
| E(B-V) | 0.009 | ||||||||||||
* Constant surface field
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