WD 1338+023
All names: SDSS J134043.13+020348.5, Gaia DR2 3663664003222454528, LHS 2781, GSC2U J134043.4+020348, SDSS J134043.34+020348.3, NLTT 34859, SDSS J134043.35+020348.3, LP 618-35, SDSS J134043.12+020348.5, WDJ134043.36+020348.30, WD 1338+023, LSPM J1340+0203, Gaia DR3 3663664003222454528, J1340+0203, 1338+023, Gaia EDR3 3663664003222454528, USNO-B1.0 0920-00275286
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Leggett et al. 2018 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 13 40 42.79 (0.08) | 13 40 42.81 (0.1) | 13 40 42.79 | 13 40 43.36 (0.08) | 13 40 42.81 | 13 40 42.70 | ||||||||
| Declination | 02 03 48.80 (0.07) | 02 03 48.78 (0.1) | 02 03 48.80 | 02 03 48.31 (0.07) | 02 03 48.78 | 02 03 44.64 | ||||||||
| Spectral type | DA | DA | DA9.0 | DC | DC | DA | DC | DA | ||||||
| Effective temperature | [K] | 5634.0 (26) | 5613.0 (23) | 5628.0 (81) | 5583.0 | 5306.0 | 5595.0 (38) | |||||||
| log(g) | [cgs] | 8.22 (0.01) | 8.21 (0.01) | 8.22 (0.05) | 8.19 | 8.02 | 8.19 (0.01) | |||||||
| Mass | [M☉] | 0.722 (0.009) | 0.722 (0.009) | 0.728 (0.04) | 0.706 | 0.582 | 0.707 (0.01) | |||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 4.9500 | 4.7980 (0.5) | 4.6910 | 4.7800 | |||||||||
| log(H/He) | ||||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | ||||||||||||||
| log(Ca/H) | ||||||||||||||
| log(C/H) | ||||||||||||||
| log(N/H) | ||||||||||||||
| log(O/H) | ||||||||||||||
| log(Na/H) | ||||||||||||||
| log(Mg/H) | ||||||||||||||
| log(Al/H) | ||||||||||||||
| log(Si/H) | ||||||||||||||
| log(P/H) | ||||||||||||||
| log(S/H) | ||||||||||||||
| log(Sc/H) | ||||||||||||||
| log(Ti/H) | ||||||||||||||
| log(Cr/H) | ||||||||||||||
| log(Mn/H) | ||||||||||||||
| log(Fe/H) | ||||||||||||||
| log(Ni/H) | ||||||||||||||
| Parallax | [mas] | 24.69 (0.1) | 24.69 (0.2) | 24.75 (1) | 24.69 (0.2) | 24.69 | 24.69 (0.1) | 24.69 (0.2) | ||||||
| Distance | [pc] | 40.51 (0.2) | 40.50 (0.3) | 40.40 (2) | 40.50 (0.3) | 40.51 | 40.51 (0.2) | 40.50 (0.3) | ||||||
| Composition | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -534.8206494 (0.1) | -534.29239 (0.4) | -534.821 (0.1) | -534.29239 | |||||||||
| Proper motion (declination) | [mas/yr] | 30.87348843 (0.08) | 31.0129828 (0.2) | 30.873 (0.08) | 31.0129828 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 18.00 | |||||||||||||
| V magnitude | 17.85 | |||||||||||||
| R magnitude | 17.40 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.59 (0.02) | |||||||||||||
| H magnitude | 16.33 (0.02) | |||||||||||||
| K magnitude | 16.27 (0.03) | |||||||||||||
| u magnitude | 19.28 (0.03) | 19.24 (0.03) | 19.24 (0.03) | 19.26 | ||||||||||
| g magnitude | 18.13 (0.006) | 18.13 (0.006) | 18.11 | |||||||||||
| r magnitude | 17.61 (0.006) | 17.61 (0.006) | 17.62 | |||||||||||
| i magnitude | 17.44 (0.006) | 17.44 (0.006) | 17.43 | |||||||||||
| z magnitude | 17.34 (0.02) | 17.34 (0.02) | 17.36 | |||||||||||
| G magnitude | 17.64 (0.01) | 17.66 | 17.64 | 17.64 (0.003) | 17.66 | |||||||||
| BP magnitude | 18.01 (0.01) | 18.02 | 18.02 | |||||||||||
| RP magnitude | 17.12 (0.007) | 17.13 | 17.13 | |||||||||||
| Pan g magnitude | 18.06 (0.008) | 18.06 (0.008) | ||||||||||||
| Pan r magnitude | 17.61 (0.006) | 17.61 (0.006) | ||||||||||||
| Pan i magnitude | 17.46 (0.003) | 17.46 (0.003) | ||||||||||||
| Pan z magnitude | 17.42 (0.007) | 17.42 (0.008) | ||||||||||||
| Pan y magnitude | 17.41 (0.009) | 17.41 (0.01) | ||||||||||||
| E(B-V) | 0.001 | |||||||||||||
* Constant surface field
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