US 861
All names: SDSS J094224.49+424717.8, Gaia DR2 819942173435780096, US 861, GALEX J094224.4+424717, SDSS J094224.47+424717.36, Gaia EDR3 819942173435780096, Gaia DR3 819942173435780096, SDSS J094224.49+424717.7, SDSS J094224.47+424717.3
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 42 24.46 (0.2) | 09 42 24.49 | 09 42 24.46 (0.3) | 09 42 24.46 | 09 42 24.49 (0.2) | |||||||
| Declination | 42 47 17.13 (0.2) | 42 47 17.82 | 42 47 17.15 (0.3) | 42 47 17.13 | 42 47 17.90 (0.2) | |||||||
| Spectral type | DC | DC | DC | DC | DC | DC | ||||||
| Effective temperature | [K] | 9930.0 | 9868.0 | 9806.0 (470) | 9964.0 (568) | |||||||
| log(g) | [cgs] | 8.26 | 8.19 | 6.86 (0.06) | 8.12 (0.1) | |||||||
| Mass | [M☉] | 0.762 | 0.7 | 0.652 (0.1) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.9014 | 0.8603 | |||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 5.08 (0.2) | 5.35 (0.5) | 5.08 | 5.08 (0.2) | |||||||
| Distance | [pc] | 196.70 (9) | 186.89 (18) | 196.70 | 196.70 (9) | |||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -26.51673271 (0.2) | -27.24863568 (0.6) | -26.517 (0.2) | ||||||||
| Proper motion (declination) | [mas/yr] | -48.28191735 (0.2) | -47.50230492 (0.6) | -48.282 (0.2) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 18.70 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 19.01 (0.02) | 19.01 (0.02) | 19.01 (0.02) | |||||||||
| g magnitude | 18.91 (0.009) | 18.91 (0.01) | 18.91 (0.009) | |||||||||
| r magnitude | 19.00 (0.01) | 19.00 (0.01) | 19.00 (0.01) | |||||||||
| i magnitude | 19.17 (0.02) | 19.17 (0.02) | 19.17 (0.02) | |||||||||
| z magnitude | 19.34 (0.07) | 19.34 (0.07) | 19.34 (0.07) | |||||||||
| G magnitude | 18.94 (0.03) | 18.98 | 18.94 | 18.94 (0.004) | ||||||||
| BP magnitude | 19.06 (0.03) | 18.98 | ||||||||||
| RP magnitude | 18.96 (0.04) | 18.80 | ||||||||||
| Pan g magnitude | 18.95 (0.009) | |||||||||||
| Pan r magnitude | 19.03 (0.006) | |||||||||||
| Pan i magnitude | 19.19 (0.006) | |||||||||||
| Pan z magnitude | 19.31 (0.02) | |||||||||||
| Pan y magnitude | 19.41 (0.05) | |||||||||||
| E(B-V) | 0.010 | |||||||||||
* 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
