LB 953
All names: SDSS J164142.22+454005.02, SDSS J164142.24+454004.7, Gaia DR2 1406186384499720704, LB 953, SDSS J164142.22+454005.0, GALEX J164142.2+454005, SDSS J164142.23+454004.7, Gaia EDR3 1406186384499720704, Gaia DR3 1406186384499720704, PG 1640+458, WD 1640+457
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2015 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 41 42.21 (0.03) | 16 41 42.24 | 16 41 42.24 | 16 41 42.21 (0.05) | 16 41 42.21 | 16 41 42.24 (0.03) | 16 41 42.31 | |||||||
| Declination | 45 40 05.15 (0.04) | 45 40 04.76 | 45 40 04.76 | 45 40 05.13 (0.05) | 45 40 05.15 | 45 40 04.75 (0.04) | 45 39 57.24 | |||||||
| Spectral type | DA | DA | DA | DA | DA2.5 | DA3 | DA | |||||||
| Effective temperature | [K] | 17873.0 | 19954.0 (68) | 19800.0 (333) | 19189.0 (315) | |||||||||
| log(g) | [cgs] | 7.83 | 8.00 (0.01) | 7.90 (0.05) | 7.91 (0.01) | |||||||||
| Mass | [M☉] | 0.53 | 0.622 (0.005) | 0.57 (0.03) | 0.571 (0.01) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.0778 | ||||||||||||
| 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] | 7.53 (0.04) | 7.54 (0.06) | 7.53 | 7.53 (0.04) | |||||||||
| Distance | [pc] | 132.87 (0.7) | 132.63 (1) | 136.00 | 132.87 | 132.87 (0.7) | ||||||||
| Composition | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -20.20953074 (0.04) | -20.35608066 (0.1) | -20.21 (0.04) | ||||||||||
| Proper motion (declination) | [mas/yr] | 24.43324627 (0.05) | 24.49831847 (0.1) | 24.433 (0.05) | ||||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 16.14 | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | ||||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 16.25 (0.005) | 16.25 (0.005) | 16.25 (0.01) | 16.25 (0.005) | ||||||||||
| g magnitude | 16.15 (0.004) | 16.15 (0.004) | 16.17 (0.02) | 16.15 (0.004) | ||||||||||
| r magnitude | 16.53 (0.004) | 16.53 (0.004) | 16.53 (0.01) | 16.53 (0.004) | ||||||||||
| i magnitude | 16.82 (0.005) | 16.82 (0.005) | 16.83 (0.02) | 16.82 (0.005) | ||||||||||
| z magnitude | 17.13 (0.01) | 17.13 (0.01) | 17.14 (0.02) | 17.13 (0.01) | ||||||||||
| G magnitude | 16.35 (0.003) | 16.37 | 16.35 | 16.35 (0.003) | ||||||||||
| BP magnitude | 16.28 (0.003) | 16.26 | ||||||||||||
| RP magnitude | 16.52 (0.005) | 16.52 | ||||||||||||
| Pan g magnitude | 16.21 (0.003) | |||||||||||||
| Pan r magnitude | 16.54 (0.002) | |||||||||||||
| Pan i magnitude | 16.84 (0.002) | |||||||||||||
| Pan z magnitude | 17.10 (0.004) | |||||||||||||
| Pan y magnitude | 17.26 (0.01) | |||||||||||||
| E(B-V) | 0.016 | |||||||||||||
* Constant surface field
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