LB 8888
All names: WD 0852+192, SDSS J085530.66+190437.4, [BGK2006] J085530.66+190437.5, Gaia DR3 660409908193185024, HS 0852+1916, LB 8888, USNO-B1.0 1090-00169929, TIC 197244063, Gaia EDR3 660409908193185024, 2MASS J08553069+1904373, Gaia DR2 660409908193185024
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Gianninas et al. 2011 | Koester et al. 2009 | Mukadam et al. 2004 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 55 30.63 (0.05) | 08 55 30.63 (0.07) | 08 55 30.63 | 08 55 30.68 (0.05) | 08 55 30.58 | |||||||
| Declination | 19 04 37.23 (0.02) | 19 04 37.24 (0.04) | 19 04 37.23 | 19 04 37.56 (0.02) | 19 04 35.76 | |||||||
| Spectral type | DA | DA | DA | DA3.4 | ? | |||||||
| Effective temperature | [K] | 14579.0 | 14910.0 (284) | 15130.0 (39) | 13000.0 | 15087.0 (168) | ||||||
| log(g) | [cgs] | 7.99 | 8.04 (0.05) | 7.85 (0.007) | 8.03 (0.01) | |||||||
| Mass | [M☉] | 0.604 | 0.63 (0.03) | 0.627 (0.01) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.2107 | ||||||||||
| 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] | 9.47 (0.06) | 9.45 (0.1) | 9.47 | 9.46 (0.06) | |||||||
| Distance | [pc] | 105.65 (0.7) | 105.76 (1) | 98.00 | 105.65 | 105.65 (0.7) | ||||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -47.89728575 (0.07) | -48.0097968 (0.2) | -47.897 (0.07) | ||||||||
| Proper motion (declination) | [mas/yr] | -20.71288763 (0.04) | -20.52534555 (0.09) | -20.713 (0.04) | ||||||||
| Variability | NOV | NOV | ||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 15.70 | 17.10 | ||||||||||
| V magnitude | ||||||||||||
| R magnitude | 16.70 | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 16.79 (0.1) | |||||||||||
| H magnitude | 16.51 (0.3) | |||||||||||
| K magnitude | ||||||||||||
| u magnitude | 16.63 (0.007) | |||||||||||
| g magnitude | 16.30 (0.004) | |||||||||||
| r magnitude | 16.61 (0.005) | |||||||||||
| i magnitude | 16.85 (0.005) | |||||||||||
| z magnitude | 17.10 (0.01) | |||||||||||
| G magnitude | 16.47 (0.004) | 16.49 | 16.47 | 16.47 (0.003) | ||||||||
| BP magnitude | 16.44 (0.004) | 16.43 | ||||||||||
| RP magnitude | 16.58 (0.005) | 16.56 | ||||||||||
| Pan g magnitude | 16.34 (0.005) | |||||||||||
| Pan r magnitude | 16.62 (0.004) | |||||||||||
| Pan i magnitude | 16.87 (0.003) | |||||||||||
| Pan z magnitude | 17.12 (0.003) | |||||||||||
| Pan y magnitude | 17.27 (0.006) | |||||||||||
| E(B-V) | 0.005 | |||||||||||
* Constant surface field
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