LB 8820
All names: Gaia EDR3 660425924127487616, SDSS J085319.32+185344.4, Gaia DR3 660425924127487616, WD 0850+190.1, Gaia DR2 660425924127487616, UGCS J085319.32+185344.2, LB 8820
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 53 19.36 (0.08) | 08 53 19.36 (0.1) | 08 53 19.36 | 08 53 19.30 (0.08) | 08 53 18.58 | |||||
| Declination | 18 53 44.04 (0.04) | 18 53 44.06 (0.06) | 18 53 44.04 | 18 53 44.66 (0.04) | 18 53 43.08 | |||||
| Spectral type | ? | ? | DA | DA | ? | |||||
| Effective temperature | [K] | 13169.0 | 14167.0 | 14414.0 (312) | ||||||
| log(g) | [cgs] | 7.83 | 7.92 | 7.93 (0.03) | ||||||
| Mass | [M☉] | 0.513 | 0.544 | 0.574 (0.02) | ||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 0.2276 | 0.2099 | |||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 5.96 (0.1) | 5.92 (0.1) | 5.96 | 5.96 (0.1) | |||||
| Distance | [pc] | 167.83 (3) | 168.83 (4) | 167.83 | 167.83 (3) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 50.22549933 (0.1) | 50.29205383 (0.2) | 50.225 (0.1) | ||||||
| Proper motion (declination) | [mas/yr] | -38.96302583 (0.08) | -38.98749914 (0.2) | -38.963 (0.08) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 17.74 (0.04) | |||||||||
| H magnitude | 17.77 (0.08) | |||||||||
| K magnitude | ||||||||||
| u magnitude | 17.68 (0.01) | |||||||||
| g magnitude | 17.32 (0.01) | |||||||||
| r magnitude | 17.59 (0.01) | |||||||||
| i magnitude | 17.82 (0.03) | |||||||||
| z magnitude | 18.09 (0.03) | |||||||||
| G magnitude | 17.44 (0.01) | 17.46 | 17.44 | 17.44 (0.003) | ||||||
| BP magnitude | 17.43 (0.01) | 17.40 | ||||||||
| RP magnitude | 17.51 (0.01) | 17.51 | ||||||||
| Pan g magnitude | 17.34 (0.005) | |||||||||
| Pan r magnitude | 17.57 (0.004) | |||||||||
| Pan i magnitude | 17.81 (0.005) | |||||||||
| Pan z magnitude | 18.06 (0.006) | |||||||||
| Pan y magnitude | 18.16 (0.04) | |||||||||
| E(B-V) | 0.008 | |||||||||
* Constant surface field
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