Gaia DR2 1798927947915336448
All names: J2130+2537, Gaia DR3 1798927947915336448, WDJ213021.77+253732.10, SDSS J213021.83+253731.3, Gaia DR2 1798927947915336448, WDJ213021.77+253732.11, SDSS J213021.83+253731.2, Gaia EDR3 1798927947915336448, GALEX J213021.7+253731
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 30 21.87 (0.1) | 21 30 21.87 | 21 30 21.87 | 21 30 21.77 (0.1) | 21 30 21.87 | ||||||||
| Declination | 25 37 30.80 (0.07) | 25 37 30.84 | 25 37 30.80 | 25 37 32.11 (0.07) | 25 37 30.84 | ||||||||
| Spectral type | DC | DC | DC | DA: | DC | ||||||||
| Effective temperature | [K] | 5959.0 (26) | 5830.0 (30) | 5959.0 (26) | 6252.0 | 6007.0 | 6306.0 (60) | ||||||
| log(g) | [cgs] | 7.85 (0.01) | 7.80 (0.02) | 7.84 (0.02) | 8.06 | 7.92 | 8.08 (0.02) | ||||||
| Mass | [M☉] | 0.485 (0.01) | 0.458 (0.01) | 0.482 (0.01) | 0.624 | 0.522 | 0.637 (0.02) | ||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 2.1200 | 2.2800 | 2.1760 | |||||||||
| log(H/He) | -3.0 | -3.0 | -3 | ||||||||||
| 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] | 15.31 (0.1) | 15.27 (0.1) | 15.27 (0.2) | 15.31 | 15.31 (0.1) | 15.27 (0.2) | ||||||
| Distance | [pc] | 65.31 (0.5) | 65.49 (0.6) | 65.50 (0.7) | 65.31 | 65.31 (0.5) | 65.50 (0.7) | ||||||
| Composition | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 87.90116172 (0.1) | 88.04726679 (0.3) | 87.901 (0.1) | 88.04726679 | ||||||||
| Proper motion (declination) | [mas/yr] | -81.76884492 (0.08) | -81.9627714 (0.3) | -81.769 (0.08) | -81.9627714 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 17.25 (0.03) | ||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 19.03 (0.03) | 18.96 (0.03) | 18.96 (0.03) | ||||||||||
| g magnitude | 18.33 (0.007) | 18.33 (0.007) | |||||||||||
| r magnitude | 18.02 (0.007) | 18.02 (0.007) | |||||||||||
| i magnitude | 17.88 (0.008) | 17.88 (0.008) | |||||||||||
| z magnitude | 17.93 (0.03) | 17.93 (0.03) | |||||||||||
| G magnitude | 18.01 (0.01) | 18.03 | 18.01 | 18.01 (0.003) | 18.03 | ||||||||
| BP magnitude | 18.30 (0.01) | 18.30 | 18.30 | ||||||||||
| RP magnitude | 17.59 (0.01) | 17.59 | 17.59 | ||||||||||
| Pan g magnitude | 18.31 (0.002) | 18.31 (0.002) | |||||||||||
| Pan r magnitude | 18.01 (0.003) | 18.01 (0.004) | |||||||||||
| Pan i magnitude | 17.91 (0.005) | 17.91 (0.005) | |||||||||||
| Pan z magnitude | 17.92 (0.01) | 17.92 (0.01) | |||||||||||
| Pan y magnitude | 17.97 (0.02) | 17.97 (0.02) | |||||||||||
| E(B-V) | 0.006 | ||||||||||||
* Constant surface field
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