WD 0816+321
All names: WD 0816+321, WDJ081924.29+315956.81, SDSS J081924.31+315956.8, Gaia EDR3 901360494077262208, USNO-B1.0 1219-00175986, Gaia DR3 901360494077262208, LSPM J0819+3159, SDSS J081924.32+315956.8, Gaia DR2 901360494077262208, J0819+3159
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | 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 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 19 24.55 (0.2) | 08 19 24.54 (0.3) | 08 19 24.55 | 08 19 24.29 (0.2) | 08 19 24.54 | 08 19 24.26 | |||||||
| Declination | 31 59 56.51 (0.1) | 31 59 56.52 (0.2) | 31 59 56.51 | 31 59 56.81 (0.1) | 31 59 56.52 | 31 59 51.00 | |||||||
| Spectral type | DC | DC | DC | DC | DA | DC | DC10.7 | ||||||
| Effective temperature | [K] | 4700.0 (34) | 4731.0 (34) | 4742.0 | 4421.0 | 4724.0 (111) | |||||||
| log(g) | [cgs] | 7.92 (0.02) | 7.93 (0.03) | 7.93 | 7.69 | 7.94 (0.06) | |||||||
| Mass | [M☉] | 0.527 (0.02) | 0.535 (0.02) | 0.534 | 0.398 | 0.543 (0.05) | |||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 6.2800 | 5.9860 | 4.3000 | |||||||||
| 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] | 16.78 (0.2) | 16.61 (0.3) | 16.61 (0.3) | 16.78 | 16.78 (0.2) | 16.61 (0.3) | ||||||
| Distance | [pc] | 59.59 (0.8) | 60.20 (1) | 60.19 (1) | 59.59 | 59.59 (0.8) | 60.19 (1) | ||||||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 207.2942804 (0.2) | 206.3689484 (0.5) | 207.294 (0.2) | 206.3689484 | ||||||||
| Proper motion (declination) | [mas/yr] | -18.83717651 (0.2) | -18.81667078 (0.4) | -18.837 (0.2) | -18.81667078 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 20.90 | ||||||||||||
| V magnitude | |||||||||||||
| R magnitude | 18.80 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 17.47 (0.04) | 17.47 (0.04) | |||||||||||
| H magnitude | 17.32 (0.04) | 17.32 (0.04) | |||||||||||
| K magnitude | 17.21 (0.09) | 17.21 (0.09) | |||||||||||
| u magnitude | 21.69 (0.2) | 21.68 (0.1) | 21.63 (0.1) | 21.65 | |||||||||
| g magnitude | 19.74 (0.01) | 19.73 (0.01) | 19.75 | ||||||||||
| r magnitude | 18.90 (0.01) | 18.89 (0.01) | 18.90 | ||||||||||
| i magnitude | 18.59 (0.01) | 18.58 (0.01) | 18.59 | ||||||||||
| z magnitude | 18.40 (0.02) | 18.41 (0.03) | 18.43 | ||||||||||
| G magnitude | 18.94 (0.04) | 18.96 | 18.94 | 18.94 (0.004) | 18.96 | ||||||||
| BP magnitude | 19.57 (0.04) | 19.41 | 19.41 | ||||||||||
| RP magnitude | 18.27 (0.03) | 18.26 | 18.26 | ||||||||||
| Pan g magnitude | 19.59 (0.01) | 19.59 (0.01) | |||||||||||
| Pan r magnitude | 18.89 (0.005) | 18.89 (0.005) | |||||||||||
| Pan i magnitude | 18.59 (0.004) | 18.59 (0.005) | |||||||||||
| Pan z magnitude | 18.49 (0.01) | 18.49 (0.01) | |||||||||||
| Pan y magnitude | 18.42 (0.03) | 18.42 (0.03) | |||||||||||
| E(B-V) | 0.001 | ||||||||||||
* Constant surface field
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