SDSS J150916.03+502017.8
All names: SDSS J150916.02+502017.7, Gaia DR2 1592629707931918720, SDSS J150916.03+502017.88, WDJ150916.05+502017.74, Gaia DR3 1592629707931918720, Gaia EDR3 1592629707931918720, SDSS J150916.03+502017.8, GALEX J150916.0+502017, SDSS J150916.02+502017.8, J1509+5020
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kepler et al. 2016 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 09 15.96 (0.1) | 15 09 16.03 | 15 09 15.96 (0.2) | 15 09 15.96 | 15 09 16.05 (0.1) | 15 09 15.96 | |||||||||
| Declination | 50 20 18.04 (0.1) | 50 20 17.79 | 50 20 18.03 (0.2) | 50 20 18.04 | 50 20 17.74 (0.1) | 50 20 18.03 | |||||||||
| Spectral type | DC | DC | DC | DC | DC | DC: | DC | DC: | |||||||
| Effective temperature | [K] | 6214.0 (48) | 6230.0 (47) | 6762.0 | 6514.0 | 6968.0 (57) | 6168.0 (164) | ||||||||
| log(g) | [cgs] | 7.94 (0.02) | 7.93 (0.02) | 8.21 | 8.10 | 8.00 (0) | 7.99 (0.04) | ||||||||
| Mass | [M☉] | 0.539 (0.01) | 0.534 (0.02) | 0.724 | 0.634 | 0.567 (0.04) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||||||
| Cooling age | [Gyr] | 2.0200 | 2.5250 | 2.2860 | |||||||||||
| log(H/He) | -3.0 | -3.0 | |||||||||||||
| 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] | 12.18 (0.1) | 12.10 (0.2) | 12.10 (0.2) | 12.18 | 12.18 (0.1) | 12.10 (0.2) | ||||||||
| Distance | [pc] | 82.08 (0.9) | 82.64 (1) | 82.64 (1) | 82.08 | 82.08 (0.9) | 82.64 (1) | ||||||||
| Composition | He | ||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -51.68404636 (0.1) | -51.7904797 (0.3) | -51.684 (0.1) | -51.7904797 | ||||||||||
| Proper motion (declination) | [mas/yr] | 18.6201162 (0.2) | 18.70107703 (0.3) | 18.62 (0.2) | 18.70107703 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | |||||||||||||||
| V magnitude | |||||||||||||||
| R magnitude | |||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | 17.79 (0.05) | ||||||||||||||
| H magnitude | |||||||||||||||
| K magnitude | |||||||||||||||
| u magnitude | 19.34 (0.03) | 19.34 (0.03) | 19.34 (0.03) | 19.34 (0.03) | 19.31 (0.03) | ||||||||||
| g magnitude | 18.69 (0.008) | 18.70 (0.02) | 18.68 (0.008) | 18.69 (0.008) | |||||||||||
| r magnitude | 18.46 (0.008) | 18.45 (0.02) | 18.45 (0.008) | 18.46 (0.008) | |||||||||||
| i magnitude | 18.40 (0.01) | 18.41 (0.01) | 18.39 (0.01) | 18.39 (0.01) | |||||||||||
| z magnitude | 18.43 (0.03) | 18.43 (0.03) | 18.43 (0.03) | 18.37 (0.03) | |||||||||||
| G magnitude | 18.44 (0.02) | 18.47 | 18.44 | 18.44 (0.003) | 18.47 | ||||||||||
| BP magnitude | 18.66 (0.02) | 18.63 | 18.63 | ||||||||||||
| RP magnitude | 18.07 (0.02) | 18.06 | 18.06 | ||||||||||||
| Pan g magnitude | 18.67 (0.008) | 18.67 (0.007) | |||||||||||||
| Pan r magnitude | 18.45 (0.01) | 18.45 (0.01) | |||||||||||||
| Pan i magnitude | 18.41 (0.005) | 18.41 (0.005) | |||||||||||||
| Pan z magnitude | 18.44 (0.009) | 18.44 (0.01) | |||||||||||||
| Pan y magnitude | 18.50 (0.02) | 18.50 (0.02) | |||||||||||||
| E(B-V) | 0.010 | ||||||||||||||
* Constant surface field
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