SDSS J093110.32+210004.6
All names: SDSS J093110.32+210004.7, J0931+2100, SDSS J093110.32+210004.6, Gaia DR2 634839219101579136, SDSS J093110.32+210004.68, WDJ093110.31+210004.93, Gaia DR3 634839219101579136, Gaia EDR3 634839219101579136
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Kilic et al. 2025 | Caron et al. 2023 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 31 10.34 (0.2) | 09 31 10.32 | 09 31 10.34 (0.3) | 09 31 10.34 | 09 31 10.31 (0.2) | 09 31 10.34 | ||||||||
| Declination | 21 00 04.34 (0.2) | 21 00 04.69 | 21 00 04.36 (0.2) | 21 00 04.34 | 21 00 04.92 (0.2) | 21 00 04.36 | ||||||||
| Spectral type | DC | DC | DZ: | DZ: | DC | DC | DC | |||||||
| Effective temperature | [K] | 5911.0 (44) | 5942.0 (44) | 6208.0 | 6921.0 (300) | 5038.0 (432) | ||||||||
| log(g) | [cgs] | 8.08 (0.03) | 8.10 (0.03) | 8.23 | 8.00 (0) | 8.00 (0.03) | ||||||||
| Mass | [M☉] | 0.62 (0.03) | 0.632 (0.03) | 0.735 | 0.567 (0.03) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 3.4900 | 3.5290 | |||||||||||
| log(H/He) | ||||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | -9.945 (0.1) | |||||||||||||
| 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] | 11.92 (0.3) | 11.89 (0.3) | 11.89 (0.3) | 11.92 | 11.92 (0.3) | 11.89 (0.3) | |||||||
| Distance | [pc] | 83.90 (2) | 84.10 (2) | 84.11 (2) | 83.90 | 83.90 (2) | 84.11 (2) | |||||||
| Composition | He | He | He | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 31.64892522 (0.3) | 31.93450678 (0.5) | 31.649 (0.3) | 31.93450678 | |||||||||
| Proper motion (declination) | [mas/yr] | -36.20267882 (0.2) | -36.77244539 (0.4) | -36.203 (0.2) | -36.77244539 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | ||||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 18.13 (0.05) | |||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 20.03 (0.04) | 20.03 (0.04) | 20.03 (0.04) | 20.03 (0.04) | 20.03 (0.04) | |||||||||
| g magnitude | 19.26 (0.01) | 19.26 (0.01) | 19.26 (0.01) | 19.26 (0.01) | ||||||||||
| r magnitude | 18.88 (0.01) | 18.88 (0.01) | 18.88 (0.01) | 18.88 (0.01) | ||||||||||
| i magnitude | 18.76 (0.01) | 18.76 (0.01) | 18.76 (0.01) | 18.76 (0.01) | ||||||||||
| z magnitude | 18.73 (0.04) | 18.73 (0.04) | 18.73 (0.04) | 18.73 (0.04) | ||||||||||
| G magnitude | 18.86 (0.02) | 18.88 | 18.86 | 18.86 (0.003) | 18.88 | |||||||||
| BP magnitude | 19.11 (0.02) | 19.09 | 19.09 | |||||||||||
| RP magnitude | 18.43 (0.03) | 18.39 | 18.39 | |||||||||||
| Pan g magnitude | 19.13 (0.01) | 19.13 (0.01) | ||||||||||||
| Pan r magnitude | 18.84 (0.003) | 18.84 (0.004) | ||||||||||||
| Pan i magnitude | 18.74 (0.009) | 18.74 (0.008) | ||||||||||||
| Pan z magnitude | 18.76 (0.007) | 18.76 (0.005) | ||||||||||||
| Pan y magnitude | 18.69 (0.05) | 18.69 (0.05) | ||||||||||||
| E(B-V) | 0.004 | |||||||||||||
* Constant surface field
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