SDSS J212115.57-032934.9
All names: SDSS J212115.57-032934.90, SDSS J212115.57-032934.9, Gaia EDR3 2684489387614560000, GALEX J212115.5-032936, SDSS J212115.56-032934.8, Gaia DR2 2684489387614560000, Gaia DR3 2684489387614560000
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kepler et al. 2016 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 21 15.57 (0.4) | 21 21 15.57 | 21 21 15.57 (0.8) | 21 21 15.57 | 21 21 15.58 (0.4) | |||||||
| Declination | -03 29 35.07 (0.3) | -03 29 34.89 | -03 29 35.06 (0.6) | -03 29 35.07 | -03 29 34.65 (0.3) | |||||||
| Spectral type | DC | DC | DC | DC | DC | DC | ||||||
| Effective temperature | [K] | 7130.0 | 6913.0 | 7668.0 (91) | 6547.0 (320) | |||||||
| log(g) | [cgs] | 8.00 | 7.90 | 8.00 (0) | 7.42 (0.1) | |||||||
| Mass | [M☉] | 0.589 | 0.515 | 0.295 (0.08) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 1.4410 | 1.4070 | |||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 5.27 (0.4) | 6.12 (0.8) | 5.27 | 5.27 (0.4) | |||||||
| Distance | [pc] | 189.89 (15) | 163.34 (20) | 189.89 | 189.89 (15) | |||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -1.790010084 (0.5) | -1.05287289 (2) | -1.79 (0.5) | ||||||||
| Proper motion (declination) | [mas/yr] | -26.14478725 (0.3) | -28.3912667 (1) | -26.145 (0.3) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 20.03 (0.04) | 20.05 (0.04) | 20.05 (0.04) | |||||||||
| g magnitude | 19.61 (0.01) | 19.62 (0.02) | 19.61 (0.01) | |||||||||
| r magnitude | 19.44 (0.01) | 19.44 (0.02) | 19.44 (0.01) | |||||||||
| i magnitude | 19.41 (0.02) | 19.41 (0.02) | 19.41 (0.02) | |||||||||
| z magnitude | 19.46 (0.06) | 19.39 (0.06) | 19.39 (0.06) | |||||||||
| G magnitude | 19.41 (0.05) | 19.45 | 19.41 | 19.41 (0.005) | ||||||||
| BP magnitude | 19.70 (0.05) | 19.60 | ||||||||||
| RP magnitude | 19.12 (0.04) | 19.15 | ||||||||||
| Pan g magnitude | 19.60 (0.008) | |||||||||||
| Pan r magnitude | 19.43 (0.008) | |||||||||||
| Pan i magnitude | 19.43 (0.007) | |||||||||||
| Pan z magnitude | 19.49 (0.02) | |||||||||||
| Pan y magnitude | 19.46 (0.06) | |||||||||||
| E(B-V) | 0.015 | |||||||||||
* Constant surface field
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