Gaia DR2 2839231634746334976
All names: J2318+2345, WDJ231815.26+234511.42, Gaia DR3 2839231634746334976, WDJ231815.26+234511.41, Gaia DR2 2839231634746334976, SDSS J231815.24+234511.4, SDSS J231815.24+234511.3
| Parameter | Unit | 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 | 23 18 15.24 | 23 18 15.24 | 23 18 15.25 (0.2) | 23 18 15.24 | ||||||||
| Declination | 23 45 11.38 | 23 45 11.38 | 23 45 11.42 (0.2) | 23 45 11.38 | ||||||||
| Spectral type | DC | DC | DC | DA | DC | |||||||
| Effective temperature | [K] | 5667.0 (66) | 5828.0 (86) | 5666.0 (66) | 6142.0 | 5899.0 | 6650.0 (188) | |||||
| log(g) | [cgs] | 7.76 (0.04) | 7.89 (0.04) | 7.77 (0.05) | 8.09 | 7.94 | 8.28 (0.06) | |||||
| Mass | [M☉] | 0.439 (0.03) | 0.505 (0.04) | 0.444 (0.04) | 0.641 | 0.538 | 0.771 (0.05) | |||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 2.4000 | 2.5740 | 2.4790 | ||||||||
| log(H/He) | -5.0 | -3.0 | -5 | |||||||||
| 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] | 10.26 (0.3) | 10.26 (0.3) | 10.20 | 10.20 (0.3) | 10.26 (0.3) | ||||||
| Distance | [pc] | 97.47 (3) | 97.47 (3) | 98.04 | 98.04 (2) | 97.47 (3) | ||||||
| Composition | He | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -17.33385309 (0.7) | -16.637 (0.2) | -17.33385309 | ||||||||
| Proper motion (declination) | [mas/yr] | -2.441149526 (0.4) | -2.623 (0.2) | -2.441149526 | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 18.23 (0.08) | |||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 19.99 (0.04) | 20.13 (0.04) | 20.13 (0.04) | |||||||||
| g magnitude | 19.33 (0.01) | 19.33 (0.01) | ||||||||||
| r magnitude | 19.02 (0.01) | 19.02 (0.01) | ||||||||||
| i magnitude | 18.89 (0.01) | 18.89 (0.01) | ||||||||||
| z magnitude | 18.96 (0.04) | 18.96 (0.04) | ||||||||||
| G magnitude | 19.02 | 18.99 | 18.99 (0.004) | 19.02 | ||||||||
| BP magnitude | 19.28 | 19.28 | ||||||||||
| RP magnitude | 18.59 | 18.59 | ||||||||||
| Pan g magnitude | 19.29 (0.01) | 19.29 (0.01) | ||||||||||
| Pan r magnitude | 18.99 (0.006) | 18.99 (0.006) | ||||||||||
| Pan i magnitude | 18.90 (0.008) | 18.90 (0.008) | ||||||||||
| Pan z magnitude | 18.88 (0.02) | 18.88 (0.01) | ||||||||||
| Pan y magnitude | 18.86 (0.04) | 18.86 (0.03) | ||||||||||
| E(B-V) | 0.008 | |||||||||||
* Constant surface field
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