SDSS J000447.76+291141.1
All names: SDSS J000447.77+291140.9, SDSS J000447.78+291140.9, SDSS J000447.76+291141.1, Gaia EDR3 2860991206083766656, Gaia DR2 2860991206083766656, Gaia DR3 2860991206083766656, SDSS J000447.77+291140.7
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 04 47.79 (0.3) | 00 04 47.78 | 00 04 47.79 (0.4) | 00 04 47.77 (0.3) | 00 04 47.78 | ||||
| Declination | 29 11 40.70 (0.2) | 29 11 40.78 | 29 11 40.71 (0.2) | 29 11 41.01 (0.2) | 29 11 40.95 | ||||
| Spectral type | dM0.5+DA | dM0.5+DA | DA | DA+M | |||||
| Effective temperature | [K] | 20793.0 | 22634.0 | 23431.0 (621) | |||||
| log(g) | [cgs] | 8.49 | 8.64 | 6.69 (0.08) | |||||
| Mass | [M☉] | 0.927 | 1.001 | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | 0.1720 | 0.1834 | ||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 1.71 (0.5) | 2.29 (0.6) | 1.71 (0.5) | |||||
| Distance | [pc] | 584.44 (163) | 437.42 (113) | 584.45 (163) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 20.37746648 (0.5) | 19.15383607 (0.8) | 20.377 (0.5) | |||||
| Proper motion (declination) | [mas/yr] | -19.36825629 (0.2) | -19.19523345 (0.4) | -19.368 (0.2) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 20.16 (0.05) | 20.16 (0.05) | 20.31 (0.06) | ||||||
| g magnitude | 19.56 (0.01) | 19.56 (0.01) | 19.87 (0.2) | ||||||
| r magnitude | 19.75 (0.02) | 19.75 (0.02) | 20.23 (0.8) | ||||||
| i magnitude | 20.46 (0.05) | 20.46 (0.05) | 20.44 (2) | ||||||
| z magnitude | 20.14 (0.1) | 20.14 (0.1) | 20.15 (2) | ||||||
| G magnitude | 19.83 (0.1) | 19.87 | 19.83 (0.004) | ||||||
| BP magnitude | 19.79 (0.1) | 19.67 | |||||||
| RP magnitude | 19.26 (0.1) | 19.31 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.056 | ||||||||
* Constant surface field
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