WD 0817+721
All names: FBS 0817+721, WDJ082315.16+715816.63, FBS B 872, GALEX J082315.0+715815, LP 35-206, USNO-B1.0 1619-00078992, GD 458, WD 0817+721, TIC 153858788, Gaia DR2 1122671504482095104, Gaia EDR3 1122671504482095104, UCAC4 810-018259, LSPM J0823+7158, Gaia DR3 1122671504482095104, 2MASS J08231515+7158175
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 23 14.91 (0.02) | 08 23 14.92 (0.03) | 08 23 14.91 | 08 23 15.16 (0.02) | 08 23 14.92 | 08 23 15.36 | ||||
| Declination | 71 58 14.35 (0.03) | 71 58 14.42 (0.04) | 71 58 14.35 | 71 58 16.63 (0.03) | 71 58 14.42 | 71 58 11.28 | ||||
| Spectral type | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 14606.0 | 15014.0 (127) | |||||||
| log(g) | [cgs] | 7.95 | 7.96 (0.008) | |||||||
| Mass | [M☉] | 0.58 | 0.593 (0.006) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 0.1964 | ||||||||
| 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] | 12.33 (0.03) | 12.41 (0.04) | 12.33 | 12.33 (0.03) | 12.41 (0.04) | ||||
| Distance | [pc] | 81.09 (0.2) | 80.60 (0.3) | 81.09 | 81.09 (0.2) | 80.60 (0.3) | ||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -70.91323777 (0.03) | -70.83361674 (0.06) | -70.913 (0.03) | -70.83361674 | |||||
| Proper motion (declination) | [mas/yr] | -142.2658717 (0.03) | -142.4149871 (0.06) | -142.266 (0.03) | -142.4149871 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 15.65 (0.2) | |||||||||
| V magnitude | ||||||||||
| R magnitude | 16.16 (0.2) | |||||||||
| I magnitude | ||||||||||
| J magnitude | 16.10 (0.1) | |||||||||
| H magnitude | 15.88 (0.2) | |||||||||
| K magnitude | ||||||||||
| u magnitude | ||||||||||
| g magnitude | 15.70 (0.05) | |||||||||
| r magnitude | 16.02 (0.04) | |||||||||
| i magnitude | 16.36 (0.01) | |||||||||
| z magnitude | ||||||||||
| G magnitude | 15.80 (0.002) | 15.82 | 15.80 | 15.80 (0.003) | 15.82 | |||||
| BP magnitude | 15.76 (0.002) | 15.75 | 15.75 | |||||||
| RP magnitude | 15.92 (0.003) | 15.92 | 15.92 | |||||||
| Pan g magnitude | 15.69 (0.003) | |||||||||
| Pan r magnitude | 15.95 (0.004) | |||||||||
| Pan i magnitude | 16.23 (0.003) | |||||||||
| Pan z magnitude | 16.47 (0.005) | |||||||||
| Pan y magnitude | 16.62 (0.007) | |||||||||
| E(B-V) | 0.003 | |||||||||
* Constant surface field
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