GD 1234
All names: WDS J23443-1611B, UCAC4 370-189993, 2MASS J23442023-1610457, WDJ234420.24-161044.86, WD 2341-164, G 273-B15B, GD 1234, GALEX J234420.1-161045, G273-B15B, Gaia DR3 2394715198352621696, ** SKF 311B, Gaia DR2 2394715198352621696, Gaia EDR3 2394715198352621696, TIC 2733719
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 44 20.15 (0.04) | 23 44 20.16 (0.06) | 23 44 20.15 | 23 44 20.24 (0.04) | 23 44 20.16 | 23 44 20.21 | |||||
| Declination | -16 10 46.66 (0.04) | -16 10 46.60 (0.06) | -16 10 46.66 | -16 10 44.86 (0.04) | -16 10 46.60 | -16 10 38.28 | |||||
| Spectral type | DA | DA | DA | DA3.6 | DA | ||||||
| Effective temperature | [K] | 12006.0 | 13830.0 (359) | 13727.0 (169) | |||||||
| log(g) | [cgs] | 7.83 | 8.00 (0.05) | 7.99 (0.01) | |||||||
| Mass | [M☉] | 0.514 | 0.61 (0.03) | 0.604 (0.009) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.3021 | |||||||||
| 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] | 12.44 (0.05) | 12.40 (0.08) | 12.44 | 12.45 (0.05) | 12.40 (0.08) | |||||
| Distance | [pc] | 80.35 (0.3) | 80.64 (0.5) | 81.00 | 80.35 | 80.35 (0.3) | 80.64 (0.5) | ||||
| Composition | H | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -73.45631869 (0.04) | -73.17491976 (0.1) | -73.456 (0.04) | -73.17491976 | ||||||
| Proper motion (declination) | [mas/yr] | -112.4544519 (0.04) | -112.2937079 (0.1) | -112.454 (0.04) | -112.2937079 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | yes | ||||||||||
| B magnitude | 16.30 | ||||||||||
| V magnitude | 16.30 | ||||||||||
| R magnitude | 16.31 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 15.85 (0.2) | ||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | |||||||||||
| g magnitude | |||||||||||
| r magnitude | |||||||||||
| i magnitude | |||||||||||
| z magnitude | |||||||||||
| G magnitude | 16.00 (0.003) | 16.01 | 16.00 | 16.00 (0.003) | 16.01 | ||||||
| BP magnitude | 15.98 (0.003) | 15.98 | 15.98 | ||||||||
| RP magnitude | 16.06 (0.004) | 16.06 | 16.06 | ||||||||
| Pan g magnitude | 15.91 (0.004) | ||||||||||
| Pan r magnitude | 16.12 (0.003) | ||||||||||
| Pan i magnitude | 16.35 (0.004) | ||||||||||
| Pan z magnitude | 16.56 (0.006) | ||||||||||
| Pan y magnitude | 16.66 (0.01) | ||||||||||
| E(B-V) | 0.002 | ||||||||||
* Constant surface field
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