Gaia DR2 928440365957680256
All names: GALEX J081828.5+444948, USNO-B1.0 1348-00204936, SDSS J081828.61+444949.8, SDSS J081828.60+444949.7, WDJ081828.62+444949.97, Gaia EDR3 928440365957680256, LSPM J0818+4449, J0818+4449, Gaia DR3 928440365957680256, Gaia DR2 928440365957680256, WDJ081828.62+444949.98
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 18 28.45 (0.2) | 08 18 28.46 | 08 18 28.45 | 08 18 28.62 (0.2) | 08 18 28.46 | ||||||||
| Declination | 44 49 47.16 (0.2) | 44 49 47.25 | 44 49 47.16 | 44 49 49.97 (0.2) | 44 49 47.25 | ||||||||
| Spectral type | DC | DC | DC | DC: | DC | ||||||||
| Effective temperature | [K] | 5831.0 (46) | 5920.0 (54) | 5833.0 (46) | 6293.0 | 6052.0 | 5193.0 (805) | ||||||
| log(g) | [cgs] | 8.06 (0.03) | 8.05 (0.04) | 7.99 (0.04) | 8.26 | 8.13 | 8.11 (0.06) | ||||||
| Mass | [M☉] | 0.61 (0.03) | 0.6 (0.03) | 0.564 (0.03) | 0.752 | 0.652 | 0.638 (0.05) | ||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 3.1200 | 3.5450 | 3.3580 | |||||||||
| log(H/He) | -3.0 | -3.0 | -3 | ||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| log(N/He) | |||||||||||||
| log(O/He) | |||||||||||||
| log(Na/He) | |||||||||||||
| log(Mg/He) | |||||||||||||
| log(Al/He) | |||||||||||||
| log(Si/He) | |||||||||||||
| log(P/He) | |||||||||||||
| log(S/He) | |||||||||||||
| log(Cl/He) | |||||||||||||
| log(Sc/He) | |||||||||||||
| log(Ti/He) | |||||||||||||
| log(V/He) | |||||||||||||
| log(Cr/He) | |||||||||||||
| log(Mn/He) | |||||||||||||
| log(Fe/He) | |||||||||||||
| log(Co/He) | |||||||||||||
| log(Ni/He) | |||||||||||||
| log(Cu/He) | |||||||||||||
| log(Zn/He) | |||||||||||||
| log(Ga/He) | |||||||||||||
| log(Ge/He) | |||||||||||||
| log(Sr/He) | |||||||||||||
| Parallax | [mas] | 11.25 (0.3) | 10.74 (0.3) | 10.74 (0.3) | 11.25 | 11.25 (0.3) | 10.74 (0.3) | ||||||
| Distance | [pc] | 88.87 (2) | 93.11 (3) | 93.15 (3) | 88.87 | 88.87 (2) | 93.15 (3) | ||||||
| Composition | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -111.9663701 (0.3) | -112.2415537 (0.5) | -111.966 (0.3) | -112.2415537 | ||||||||
| Proper motion (declination) | [mas/yr] | -175.4594789 (0.2) | -175.9029876 (0.4) | -175.459 (0.2) | -175.9029876 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 19.50 | ||||||||||||
| V magnitude | |||||||||||||
| R magnitude | 19.30 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 18.26 (0.06) | ||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 20.05 (0.04) | 20.05 (0.04) | 20.05 (0.04) | ||||||||||
| g magnitude | 19.36 (0.01) | 19.36 (0.01) | |||||||||||
| r magnitude | 19.03 (0.01) | 19.03 (0.01) | |||||||||||
| i magnitude | 18.97 (0.01) | 18.97 (0.01) | |||||||||||
| z magnitude | 18.88 (0.04) | 18.88 (0.04) | |||||||||||
| G magnitude | 19.03 (0.03) | 19.07 | 19.03 | 19.03 (0.004) | 19.07 | ||||||||
| BP magnitude | 19.28 (0.03) | 19.33 | 19.33 | ||||||||||
| RP magnitude | 18.66 (0.04) | 18.65 | 18.65 | ||||||||||
| Pan g magnitude | 19.32 (0.007) | 19.32 (0.007) | |||||||||||
| Pan r magnitude | 19.05 (0.01) | 19.05 (0.01) | |||||||||||
| Pan i magnitude | 18.97 (0.006) | 18.97 (0.006) | |||||||||||
| Pan z magnitude | 18.95 (0.02) | 18.95 (0.02) | |||||||||||
| Pan y magnitude | 18.97 (0.03) | 18.97 (0.03) | |||||||||||
| E(B-V) | 0.003 | ||||||||||||
* 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
