SDSS J131738.48+443453.4
All names: Gaia DR3 1550492952021749248, WDJ131738.48+443453.09, SDSS J131738.47+443453.4, J1317+4434, SDSS J131738.48+443453.40, Gaia EDR3 1550492952021749248, Gaia DR2 1550492952021749248, SDSS J131738.48+443453.4
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Kilic et al. 2025 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 13 17 38.44 (0.08) | 13 17 38.47 | 13 17 38.44 (0.09) | 13 17 38.44 | 13 17 38.48 (0.08) | 13 17 38.44 | |||||||||
| Declination | 44 34 54.72 (0.09) | 44 34 53.41 | 44 34 54.67 (0.09) | 44 34 54.72 | 44 34 53.09 (0.09) | 44 34 54.67 | |||||||||
| Spectral type | DC | DC: | DC: | DC: | DC: | DC | DC | DC | |||||||
| Effective temperature | [K] | 6297.0 (43) | 6286.0 (41) | 6790.0 | 6556.0 | 10000.0 (3000) | 6108.0 (129) | ||||||||
| log(g) | [cgs] | 8.11 (0.01) | 8.11 (0.02) | 8.36 | 8.25 | 6.50 (0.5) | 8.12 (0.03) | ||||||||
| Mass | [M☉] | 0.64 (0.01) | 0.638 (0.01) | 0.818 | 0.735 | 0.647 (0.03) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||||||
| Cooling age | [Gyr] | 2.6900 | 3.4380 | 3.2620 | |||||||||||
| log(H/He) | -3.2 | -3.2 | |||||||||||||
| 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] | 13.52 (0.1) | 13.56 (0.1) | 13.56 (0.1) | 13.52 | 13.52 (0.1) | 13.56 (0.1) | ||||||||
| Distance | [pc] | 73.98 (0.7) | 73.75 (0.8) | 73.74 (0.8) | 73.98 | 73.98 (0.7) | 73.74 (0.8) | ||||||||
| Composition | He | ||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -25.3650522 (0.1) | -25.56809158 (0.2) | -25.365 (0.1) | -25.56809158 | ||||||||||
| Proper motion (declination) | [mas/yr] | 102.170195 (0.1) | 101.9890837 (0.2) | 102.17 (0.1) | 101.9890837 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | |||||||||||||||
| V magnitude | |||||||||||||||
| R magnitude | |||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | 17.75 (0.04) | ||||||||||||||
| H magnitude | |||||||||||||||
| K magnitude | |||||||||||||||
| u magnitude | 19.28 (0.02) | 19.28 (0.02) | 19.28 (0.02) | 19.28 (0.02) | 19.28 (0.02) | ||||||||||
| g magnitude | 18.66 (0.008) | 18.66 (0.01) | 18.66 (0.008) | 18.66 (0.008) | |||||||||||
| r magnitude | 18.42 (0.008) | 18.42 (0.01) | 18.42 (0.008) | 18.42 (0.008) | |||||||||||
| i magnitude | 18.35 (0.009) | 18.35 (0.01) | 18.35 (0.009) | 18.35 (0.009) | |||||||||||
| z magnitude | 18.36 (0.02) | 18.36 (0.02) | 18.36 (0.02) | 18.36 (0.02) | |||||||||||
| G magnitude | 18.40 (0.01) | 18.43 | 18.40 | 18.40 (0.003) | 18.43 | ||||||||||
| BP magnitude | 18.61 (0.01) | 18.59 | 18.59 | ||||||||||||
| RP magnitude | 18.05 (0.01) | 18.03 | 18.03 | ||||||||||||
| Pan g magnitude | 18.62 (0.008) | 18.62 (0.008) | |||||||||||||
| Pan r magnitude | 18.41 (0.007) | 18.41 (0.005) | |||||||||||||
| Pan i magnitude | 18.35 (0.003) | 18.35 (0.003) | |||||||||||||
| Pan z magnitude | 18.42 (0.006) | 18.42 (0.007) | |||||||||||||
| Pan y magnitude | 18.45 (0.03) | 18.45 (0.03) | |||||||||||||
| E(B-V) | 0.005 | ||||||||||||||
* Constant surface field
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