SDSS J084008.50+271242.7
All names: SDSS J084008.49+271242.6, Gaia DR2 703440468274308224, USNO-A2.0 1125-05699057, GALEX J084008.4+271242, SDSS J084008.50+271242.7, Gaia EDR3 703440468274308224, Gaia DR3 703440468274308224, WD 0837+273
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Hardy et al. 2023a | MWDD H | Gaia DR2 | Stilism | Ferrario et al. 2015 | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 40 08.47 (0.3) | 08 40 08.50 | 08 40 08.48 (0.4) | 08 40 08.47 | 08 40 08.50 (0.3) | 08 40 08.50 | 08 40 08.28 | 08 40 08.50 | ||||||
| Declination | 27 12 42.52 (0.1) | 27 12 42.69 | 27 12 42.52 (0.2) | 27 12 42.52 | 27 12 42.65 (0.1) | 27 12 42.70 | 27 12 38.52 | 27 12 42.70 | ||||||
| Spectral type | DAH | DA | DA | DA: | DAP | DAH | DAH | DAH | DAH | |||||
| Effective temperature | [K] | 12767.5 (593) | 13102.0 | 12250.0 | 11133.0 (610) | 16295.0 (253) | 19113.0 (355) | |||||||
| log(g) | [cgs] | 8.52 (1) | 8.58 | 8.35 (0.09) | 9.00 (0.003) | 9.99 (0.02) | ||||||||
| Mass | [M☉] | 0.934764109811571 (0.1) | 0.974 | 0.822 (0.08) | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.7275 | ||||||||||||
| 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] | 4.33 (0.3) | 4.39 (0.5) | 4.33 | 4.33 (0.3) | |||||||||
| Distance | [pc] | 230.96 (15) | 227.81 (26) | 230.96 | 230.96 (15) | |||||||||
| Composition | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -23.56283545 (0.3) | -23.87535889 (0.8) | -23.563 (0.3) | -25.2 | |||||||||
| Proper motion (declination) | [mas/yr] | -8.094854086 (0.2) | -8.163404614 (0.5) | -8.095 (0.2) | 3.8 | |||||||||
| Variability | ||||||||||||||
| Magnetic | yes | yes | yes | yes | ||||||||||
| Bd | [MG] | 9.854001858861809 | 10 | |||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 18.40 (0.3) | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | 18.80 (0.3) | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | ||||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 19.49 (0.03) | 19.50 (0.03) | 19.53 (0.05) | 19.52 | 19.51 (0.05) | |||||||||
| g magnitude | 19.16 (0.01) | 19.16 (0.01) | 19.18 (0.02) | 19.17 | 19.17 (0.02) | |||||||||
| r magnitude | 19.34 (0.01) | 19.34 (0.01) | 19.35 (0.02) | 19.34 | 19.34 (0.02) | |||||||||
| i magnitude | 19.53 (0.02) | 19.53 (0.02) | 19.55 (0.03) | 19.54 | 19.54 (0.03) | |||||||||
| z magnitude | 19.84 (0.09) | 19.84 (0.09) | 19.87 (0.09) | 19.86 | 19.87 (0.09) | |||||||||
| G magnitude | 19.24 (0.03) | 19.28 | 19.24 | 19.24 (0.004) | ||||||||||
| BP magnitude | 19.27 (0.03) | 19.27 | ||||||||||||
| RP magnitude | 19.22 (0.05) | 19.16 | ||||||||||||
| Pan g magnitude | ||||||||||||||
| Pan r magnitude | ||||||||||||||
| Pan i magnitude | ||||||||||||||
| Pan z magnitude | ||||||||||||||
| Pan y magnitude | ||||||||||||||
| E(B-V) | 0.011 | |||||||||||||
* Constant surface field
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