SDSS J084008.30+454636.4
All names: SDSS J084008.30+454636.5, SDSS J084008.30+454636.4, Gaia DR2 917558568096406144, GALEX J084008.3+454636, WD 0836+459, Gaia DR3 917558568096406144, Gaia EDR3 917558568096406144
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 40 08.30 (0.5) | 08 40 08.31 | 08 40 08.30 (0.7) | 08 40 08.30 (0.5) | 08 40 08.30 | 08 40 07.80 | 08 40 08.30 | ||||
| Declination | 45 46 36.45 (0.3) | 45 46 36.43 | 45 46 36.45 (0.5) | 45 46 36.39 (0.3) | 45 46 36.43 | 45 46 33.24 | 45 46 36.49 | ||||
| Spectral type | DA | DA | DA_auto | DA | DA | ||||||
| Effective temperature | [K] | 9825.0 | 12657.0 (709) | 12606.0 (599) | |||||||
| log(g) | [cgs] | 6.92 | 7.83 (0.3) | 8.10 (0.3) | |||||||
| Mass | [M☉] | 0.203 | 0.662 (0.2) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| 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] | 1.60 (0.6) | 1.30 (0.8) | 1.60 (0.6) | |||||||
| Distance | [pc] | 626.32 (228) | 769.23 (501) | 626.33 (228) | |||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -3.884963497 (0.6) | -5.216785442 (1) | -3.885 (0.6) | -2.4 | ||||||
| Proper motion (declination) | [mas/yr] | 3.743052662 (0.4) | 4.371965026 (0.9) | 3.743 (0.4) | 7.9 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 20.51 (0.05) | 20.51 (0.05) | 20.52 (0.05) | 20.51 | 20.53 (0.05) | ||||||
| g magnitude | 20.12 (0.02) | 20.12 (0.02) | 20.11 (0.03) | 20.11 | 20.11 (0.03) | ||||||
| r magnitude | 20.32 (0.03) | 20.32 (0.03) | 20.33 (0.03) | 20.33 | 20.33 (0.03) | ||||||
| i magnitude | 20.49 (0.04) | 20.49 (0.04) | 20.52 (0.04) | 20.52 | 20.53 (0.04) | ||||||
| z magnitude | 20.45 (0.1) | 20.45 (0.1) | 20.46 (0.1) | 20.46 | 20.46 (0.1) | ||||||
| G magnitude | 20.21 (0.06) | 20.27 | 20.21 (0.006) | ||||||||
| BP magnitude | 20.30 (0.06) | 20.22 | |||||||||
| RP magnitude | 20.00 (0.1) | 20.18 | |||||||||
| Pan g magnitude | 20.17 (0.01) | ||||||||||
| Pan r magnitude | 20.32 (0.007) | ||||||||||
| Pan i magnitude | 20.38 (0.02) | ||||||||||
| Pan z magnitude | 20.54 (0.05) | ||||||||||
| Pan y magnitude | |||||||||||
| E(B-V) | 0.026 | ||||||||||
* Constant surface field
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