HE 2218-2706
All names: USNO-B1.0 0631-01080393, 2MASS J22212391-2650545, Gaia DR3 6621832284637642240, TIC 441197076, EC 22185-2706, HE 2218-2706, WDJ222123.91-265054.53, Gaia DR2 6621832284637642240, Gaia EDR3 6621832284637642240, UCAC4 316-243500, GALEX J222123.9-265054, WD 2218-271
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Koester et al. 2009 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 21 24.03 (0.1) | 22 21 24.03 (0.09) | 22 21 24.03 | 22 21 23.91 (0.1) | 22 21 24.03 | 22 21 24.14 | |||||
| Declination | -26 50 53.45 (0.09) | -26 50 53.48 (0.08) | -26 50 53.45 | -26 50 54.54 (0.09) | -26 50 53.48 | -26 50 51.36 | |||||
| Spectral type | DA | DA | DA | DA | |||||||
| Effective temperature | [K] | 11716.0 | 15039.0 (30) | 13037.0 (112) | |||||||
| log(g) | [cgs] | 7.68 | 7.79 (0.005) | 7.83 (0.01) | |||||||
| Mass | [M☉] | 0.44 | 0.515 (0.007) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.2686 | |||||||||
| 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] | 20.51 (0.1) | 20.00 (0.1) | 20.51 | 20.51 (0.1) | 20.00 (0.1) | |||||
| Distance | [pc] | 48.75 (0.3) | 50.00 (0.3) | 48.75 | 48.75 (0.3) | 50.00 (0.3) | |||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 97.42203811 (0.1) | 99.4707487 (0.2) | 97.422 (0.1) | 99.4707487 | ||||||
| Proper motion (declination) | [mas/yr] | 68.47187801 (0.1) | 67.57011612 (0.1) | 68.472 (0.1) | 67.57011612 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 14.89 | 14.91 (0) | |||||||||
| V magnitude | 14.71 (0.03) | ||||||||||
| R magnitude | 15.07 (0.1) | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 14.87 (0.04) | ||||||||||
| H magnitude | 14.83 (0.07) | ||||||||||
| K magnitude | 14.99 (0.1) | ||||||||||
| u magnitude | |||||||||||
| g magnitude | |||||||||||
| r magnitude | |||||||||||
| i magnitude | |||||||||||
| z magnitude | |||||||||||
| G magnitude | 14.84 (0.002) | 14.83 | 14.84 | 14.84 (0.003) | 14.83 | ||||||
| BP magnitude | 14.78 (0.002) | 14.77 | 14.77 | ||||||||
| RP magnitude | 14.81 (0.002) | 14.81 | 14.81 | ||||||||
| Pan g magnitude | 14.72 (0.003) | ||||||||||
| Pan r magnitude | 14.91 (0.003) | ||||||||||
| Pan i magnitude | 15.15 (0.003) | ||||||||||
| Pan z magnitude | 15.34 (0.004) | ||||||||||
| Pan y magnitude | 15.48 (0.002) | ||||||||||
| E(B-V) | 0.001 | ||||||||||
* Constant surface field
Special notes:
Spectra
Controls
Normalize at:
Normalize by mean flux
Range:
x:
to
y:
to
Spectra available:
Spectra without link are available upon request
Absorption lines
Photometric filters
BVRI
ugriz
Photometric fit
