SDSS J081802.75+414410.5
All names: SDSS J081802.75+414410.5, SDSS J081802.76+414410.5, Gaia EDR3 915672081021495552, WDJ081802.76+414410.59, Gaia DR3 915672081021495552, Gaia DR2 915672081021495552, SDSS J081802.75+414410.2, GALEX J081802.8+414410, WD 0814+418, SDSS J081802.74+414410.2, J0818+4144
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | 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 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 18 02.72 (0.1) | 08 18 02.74 | 08 18 02.72 (0.1) | 08 18 02.72 | 08 18 02.76 (0.1) | 08 18 02.72 | 08 18 02.75 | 08 18 02.23 | 08 18 02.76 | ||||||||
| Declination | 41 44 09.73 (0.09) | 41 44 10.24 | 41 44 09.75 (0.1) | 41 44 09.73 | 41 44 10.59 (0.09) | 41 44 09.75 | 41 44 10.51 | 41 44 08.52 | 41 44 10.52 | ||||||||
| Spectral type | DAH? | DAH: | DH: | DH: | DC: | DC | DC | DH: | DH: | DH: | DAH | ||||||
| Effective temperature | [K] | 8659.0 (59) | 8568.0 (56) | 8513.0 | 8228.0 | 7944.0 (202) | 10135.0 (69) | 10135.0 (69) | |||||||||
| log(g) | [cgs] | 8.31 (0.02) | 8.29 (0.02) | 8.28 | 8.19 | 8.05 (0.04) | 8.49 (0.3) | 9.19 (0.5) | |||||||||
| Mass | [M☉] | 0.791 (0.01) | 0.778 (0.02) | 0.771 | 0.695 | 0.606 (0.04) | |||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||||
| Cooling age | [Gyr] | 1.4500 | 1.4020 | 1.3580 | |||||||||||||
| 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] | 10.44 (0.1) | 10.44 (0.2) | 10.44 (0.2) | 10.44 | 10.44 (0.1) | 10.44 (0.2) | ||||||||||
| Distance | [pc] | 95.77 (1) | 95.79 (2) | 95.75 (2) | 95.77 | 95.77 (1) | 95.75 (2) | ||||||||||
| Composition | H | H | |||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -27.67598506 (0.1) | -28.01904407 (0.3) | -27.676 (0.1) | -28.019 | -26.3 | |||||||||||
| Proper motion (declination) | [mas/yr] | -54.04676872 (0.1) | -54.15564242 (0.2) | -54.047 (0.1) | -54.156 | -60.1 | |||||||||||
| Variability | |||||||||||||||||
| Magnetic | yes | ||||||||||||||||
| Bd | [MG] | ||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||
| Binarity | |||||||||||||||||
| B magnitude | |||||||||||||||||
| V magnitude | |||||||||||||||||
| R magnitude | |||||||||||||||||
| I magnitude | |||||||||||||||||
| J magnitude | 17.69 (0.04) | ||||||||||||||||
| H magnitude | |||||||||||||||||
| K magnitude | |||||||||||||||||
| u magnitude | 18.48 (0.02) | 18.50 (0.01) | 18.48 (0.02) | 18.48 (0.01) | 18.50 (0.02) | 18.13 | 18.50 (0.02) | ||||||||||
| g magnitude | 18.11 (0.006) | 18.11 (0.006) | 18.14 (0.006) | 18.14 (0.03) | 18.13 | 18.13 (0.03) | |||||||||||
| r magnitude | 18.07 (0.007) | 18.07 (0.007) | 18.10 (0.007) | 18.11 (0.02) | 18.11 (0.02) | ||||||||||||
| i magnitude | 18.13 (0.009) | 18.13 (0.009) | 18.14 (0.009) | 18.14 (0.02) | 18.14 (0.02) | ||||||||||||
| z magnitude | 18.20 (0.02) | 18.20 (0.02) | 18.25 (0.03) | 18.26 (0.03) | 18.27 (0.03) | ||||||||||||
| G magnitude | 18.05 (0.01) | 18.07 | 18.05 | 18.05 (0.003) | 18.07 | ||||||||||||
| BP magnitude | 18.16 (0.01) | 18.15 | 18.15 | ||||||||||||||
| RP magnitude | 17.87 (0.02) | 17.83 | 17.83 | ||||||||||||||
| Pan g magnitude | 18.13 (0.004) | 18.13 (0.005) | |||||||||||||||
| Pan r magnitude | 18.10 (0.004) | 18.10 (0.004) | |||||||||||||||
| Pan i magnitude | 18.18 (0.004) | 18.18 (0.004) | |||||||||||||||
| Pan z magnitude | 18.28 (0.009) | 18.28 (0.009) | |||||||||||||||
| Pan y magnitude | 18.36 (0.009) | 18.36 (0.008) | |||||||||||||||
| E(B-V) | 0.003 | ||||||||||||||||
* Constant surface field
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