WD 2021-128
All names: Gaia DR2 6876934409805839872, WD 2021-128, Gaia DR3 6876934409805839872, Gaia EDR3 6876934409805839872, TIC 428969253, SDSS J202442.87-124150.4, BPS CS 22950-12, GALEX J202442.8-124149, WDJ202442.89-124149.88, BPS CS 22950-0122, 2MASS J20244290-1241498
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Koester et al. 2014 | Gianninas et al. 2011 | Koester et al. 2009 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 24 42.84 (0.04) | 20 24 42.84 (0.05) | 20 24 42.84 | 20 24 42.89 (0.04) | 20 24 42.84 | 20 24 42.07 | |||||||
| Declination | -12 41 51.46 (0.03) | -12 41 51.41 (0.04) | -12 41 51.46 | -12 41 49.88 (0.03) | -12 41 51.41 | -12 41 43.08 | |||||||
| Spectral type | DA | DA | DA | DA2.3 | DA | ||||||||
| Effective temperature | [K] | 18960.0 | 20892.0 (284) | 21730.0 (373) | 20753.0 (61) | 20494.0 (272) | |||||||
| log(g) | [cgs] | 7.91 | 7.94 (0.09) | 7.99 (0.05) | 7.82 (0.01) | 7.99 (0.01) | |||||||
| Mass | [M☉] | 0.569 | 0.594 (0.05) | 0.62 (0.03) | 0.621 (0.009) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.0685 | |||||||||||
| 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) | <-8.30 | ||||||||||||
| 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] | 12.57 (0.04) | 12.52 (0.06) | 12.57 | 12.57 (0.04) | 12.52 (0.06) | |||||||
| Distance | [pc] | 79.56 (0.3) | 79.87 (0.4) | 52.00 | 79.56 | 79.56 (0.3) | 79.87 (0.4) | ||||||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -50.25990404 (0.05) | -50.14122889 (0.1) | -50.26 (0.05) | -50.14122889 | ||||||||
| Proper motion (declination) | [mas/yr] | -98.6572392 (0.03) | -98.65655238 (0.07) | -98.657 (0.04) | -98.65655238 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 14.20 | ||||||||||||
| V magnitude | 15.20 (0.08) | 15.20 | |||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 15.79 (0.08) | ||||||||||||
| H magnitude | 16.12 (0.2) | ||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 15.04 (0.02) | 15.06 (0.005) | |||||||||||
| g magnitude | 15.05 (0.009) | 15.04 (0.004) | |||||||||||
| r magnitude | 15.40 (0.01) | 15.41 (0.004) | |||||||||||
| i magnitude | 15.69 (0.02) | 15.71 (0.005) | |||||||||||
| z magnitude | 15.96 (0.01) | 15.98 (0.007) | |||||||||||
| G magnitude | 15.23 (0.001) | 15.25 | 15.23 | 15.23 (0.003) | 15.25 | ||||||||
| BP magnitude | 15.14 (0.001) | 15.11 | 15.11 | ||||||||||
| RP magnitude | 15.42 (0.002) | 15.43 | 15.43 | ||||||||||
| Pan g magnitude | 15.10 (0.002) | ||||||||||||
| Pan r magnitude | 15.43 (0.0009) | ||||||||||||
| Pan i magnitude | 15.75 (0.002) | ||||||||||||
| Pan z magnitude | 16.01 (0.003) | ||||||||||||
| Pan y magnitude | 16.18 (0.006) | ||||||||||||
| E(B-V) | 0.004 | ||||||||||||
* Constant surface field
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