Gaia DR2 4455760769799431040
All names: J1557+0953, Gaia EDR3 4455760769799431040, SDSS J155721.78+095335.5, WDJ155721.77+095335.02, GALEX J155721.7+095337, Gaia DR3 4455760769799431040, SDSS J155721.79+095335.5, Gaia DR2 4455760769799431040
| 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 | 15 57 21.82 (0.2) | 15 57 21.82 | 15 57 21.82 | 15 57 21.77 (0.2) | 15 57 21.82 | ||||||||
| Declination | 09 53 36.66 (0.1) | 09 53 36.61 | 09 53 36.66 | 09 53 35.02 (0.1) | 09 53 36.61 | ||||||||
| Spectral type | DC | DC | DC | DA | DC | ||||||||
| Effective temperature | [K] | 5762.0 (67) | 6082.0 (73) | 5763.0 (68) | 6232.0 | 5993.0 | 6422.0 (176) | ||||||
| log(g) | [cgs] | 7.95 (0.03) | 8.10 (0.04) | 7.91 (0.04) | 8.19 | 8.06 | 8.27 (0.05) | ||||||
| Mass | [M☉] | 0.539 (0.03) | 0.632 (0.04) | 0.517 (0.03) | 0.709 | 0.608 | 0.761 (0.05) | ||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 3.0600 | 3.2060 | 2.9570 | |||||||||
| log(H/He) | -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] | 11.01 (0.2) | 10.76 (0.3) | 10.76 (0.3) | 11.01 | 11.01 (0.2) | 10.76 (0.3) | ||||||
| Distance | [pc] | 90.85 (2) | 92.94 (3) | 92.91 (3) | 90.85 | 90.85 (2) | 92.91 (3) | ||||||
| Composition | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 46.41857728 (0.2) | 46.0062093 (0.5) | 46.419 (0.2) | 46.0062093 | ||||||||
| Proper motion (declination) | [mas/yr] | 102.6484038 (0.2) | 102.3259798 (0.4) | 102.648 (0.2) | 102.3259798 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 18.23 (0.05) | ||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 20.03 (0.04) | 20.05 (0.04) | 20.04 (0.04) | ||||||||||
| g magnitude | 19.29 (0.01) | 19.29 (0.01) | |||||||||||
| r magnitude | 18.91 (0.01) | 18.95 (0.01) | |||||||||||
| i magnitude | 18.85 (0.01) | 18.90 (0.01) | |||||||||||
| z magnitude | 18.80 (0.05) | 18.88 (0.04) | |||||||||||
| G magnitude | 18.98 (0.04) | 19.02 | 18.98 | 18.98 (0.004) | 19.02 | ||||||||
| BP magnitude | 19.20 (0.04) | 19.24 | 19.24 | ||||||||||
| RP magnitude | 18.57 (0.03) | 18.52 | 18.52 | ||||||||||
| Pan g magnitude | 19.27 (0.02) | 19.27 (0.02) | |||||||||||
| Pan r magnitude | 18.97 (0.005) | 18.97 (0.005) | |||||||||||
| Pan i magnitude | 18.87 (0.006) | 18.87 (0.006) | |||||||||||
| Pan z magnitude | 18.90 (0.01) | 18.90 (0.01) | |||||||||||
| Pan y magnitude | 18.91 (0.02) | 18.91 (0.03) | |||||||||||
| E(B-V) | 0.009 | ||||||||||||
* 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
