SDSS J003053.94+242154.8
All names: J0030+2421, Gaia DR2 2807036078858147584, SDSS J003053.92+242154.9, SDSS J003053.94+242154.8, WDJ003053.93+242155.00, GALEX J003053.9+242155, SDSS J003053.93+242155.0, SDSS J003053.94+242154.80, Gaia DR3 2807036078858147584, SDSS J003053.93+242154.7, Gaia EDR3 2807036078858147584
| 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 | 00 30 53.95 (0.06) | 00 30 53.93 | 00 30 53.95 (0.08) | 00 30 53.95 | 00 30 53.93 (0.06) | 00 30 53.95 | |||||||||
| Declination | 24 21 54.66 (0.04) | 24 21 54.97 | 24 21 54.67 (0.07) | 24 21 54.66 | 24 21 55.01 (0.04) | 24 21 54.67 | |||||||||
| Spectral type | DC | DC | DC | DC | DC | DC | DC | DC | |||||||
| Effective temperature | [K] | 9583.0 (94) | 9727.0 (78) | 9925.0 | 9899.0 | 10328.0 (123) | 9374.0 (122) | ||||||||
| log(g) | [cgs] | 7.94 (0.02) | 7.98 (0.02) | 8.15 | 8.09 | 8.00 (0) | 7.92 (0.02) | ||||||||
| Mass | [M☉] | 0.542 (0.01) | 0.569 (0.01) | 0.695 | 0.634 | 0.532 (0.02) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||||||
| Cooling age | [Gyr] | 0.6900 | 0.7695 | 0.7295 | |||||||||||
| log(H/He) | -4.4 | -4.4 | |||||||||||||
| 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] | 11.45 (0.08) | 11.49 (0.1) | 11.49 (0.1) | 11.45 | 11.45 (0.08) | 11.49 (0.1) | ||||||||
| Distance | [pc] | 87.35 (0.6) | 87.03 (0.8) | 87.06 (0.7) | 87.35 | 87.35 (0.6) | 87.06 (0.7) | ||||||||
| Composition | He | ||||||||||||||
| Proper motion (right ascension) | [mas/yr] | 17.72173913 (0.1) | 17.97722654 (0.2) | 17.722 (0.1) | 17.97722654 | ||||||||||
| Proper motion (declination) | [mas/yr] | -21.78123459 (0.07) | -21.58930138 (0.1) | -21.781 (0.07) | -21.58930138 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | |||||||||||||||
| V magnitude | |||||||||||||||
| R magnitude | |||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | 17.13 (0.03) | ||||||||||||||
| H magnitude | |||||||||||||||
| K magnitude | |||||||||||||||
| u magnitude | 17.25 (0.008) | 17.25 (0.008) | 17.25 (0.02) | 17.24 (0.008) | 17.26 (0.009) | ||||||||||
| g magnitude | 17.06 (0.004) | 17.07 (0.02) | 17.07 (0.004) | 17.08 (0.004) | |||||||||||
| r magnitude | 17.19 (0.005) | 17.19 (0.02) | 17.19 (0.005) | 17.20 (0.005) | |||||||||||
| i magnitude | 17.34 (0.006) | 17.34 (0.02) | 17.34 (0.006) | 17.32 (0.006) | |||||||||||
| z magnitude | 17.47 (0.01) | 17.46 (0.02) | 17.46 (0.01) | 17.51 (0.01) | |||||||||||
| G magnitude | 17.10 (0.006) | 17.13 | 17.10 | 17.10 (0.003) | 17.13 | ||||||||||
| BP magnitude | 17.15 (0.006) | 17.12 | 17.12 | ||||||||||||
| RP magnitude | 17.02 (0.007) | 17.00 | 17.00 | ||||||||||||
| Pan g magnitude | 17.13 (0.003) | 17.13 (0.005) | |||||||||||||
| Pan r magnitude | 17.20 (0.002) | 17.20 (0.002) | |||||||||||||
| Pan i magnitude | 17.37 (0.009) | 17.37 (0.009) | |||||||||||||
| Pan z magnitude | 17.50 (0.007) | 17.50 (0.01) | |||||||||||||
| Pan y magnitude | 17.61 (0.009) | 17.61 (0.009) | |||||||||||||
| E(B-V) | 0.005 | ||||||||||||||
* Constant surface field
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