WD 0817+251
All names: Gaia DR2 679364217345812608, SDSS J082003.03+250012.1, SDSS J082003.03+250012.0, GALEX J082003.0+250011, [BGK2006] J082003.03+250012.1, [KAB2007] Cand 144, WD 0817+251, Gaia EDR3 679364217345812608, Gaia DR3 679364217345812608
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 20 03.04 (0.4) | 08 20 03.04 (0.6) | 08 20 03.03 (0.4) | 08 20 02.47 | ||||
| Declination | 25 00 11.84 (0.3) | 25 00 11.85 (0.4) | 25 00 12.09 (0.3) | 25 00 06.48 | ||||
| Spectral type | DA | DA | DA3.9 | |||||
| Effective temperature | [K] | 11825.0 | ||||||
| log(g) | [cgs] | 8.41 | ||||||
| Mass | [M☉] | 0.865 | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | 0.7329 | ||||||
| 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] | 2.37 (0.4) | 3.45 (0.7) | 2.37 (0.4) | ||||
| Distance | [pc] | 421.59 (76) | 290.19 (55) | 421.59 (76) | ||||
| Composition | H | |||||||
| Proper motion (right ascension) | [mas/yr] | 6.20542105 (0.5) | 6.285269716 (1) | 6.205 (0.5) | ||||
| Proper motion (declination) | [mas/yr] | -15.45122889 (0.4) | -14.97168622 (0.9) | -15.451 (0.4) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 19.99 (0.05) | 19.89 | ||||||
| g magnitude | 19.52 (0.01) | 19.45 | ||||||
| r magnitude | 19.86 (0.02) | 19.83 | ||||||
| i magnitude | 19.90 (0.03) | 19.92 | ||||||
| z magnitude | 20.22 (0.2) | 20.25 | ||||||
| G magnitude | 19.70 (0.04) | 19.76 | 19.70 (0.005) | |||||
| BP magnitude | 19.77 (0.04) | 19.74 | ||||||
| RP magnitude | 19.69 (0.09) | 19.57 | ||||||
| Pan g magnitude | 19.60 (0.01) | |||||||
| Pan r magnitude | 19.79 (0.01) | |||||||
| Pan i magnitude | 19.98 (0.02) | |||||||
| Pan z magnitude | 20.15 (0.07) | |||||||
| Pan y magnitude | 20.03 (0.2) | |||||||
| E(B-V) | 0.027 | |||||||
* Constant surface field
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