GD 320
All names: SDSS J125526.31+475719.2, Gaia DR2 1555179177955997440, PB 21, Gaia DR3 1555179177955997440, WD 1253+482, Gaia EDR3 1555179177955997440, GD 320, GALEX J125526.2+475719, SDSS J125526.31+475719.1, [BGK2006] J125526.31+475719.1, WD 1253+48, EGGR 357
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 55 26.19 (0.03) | 12 55 26.19 (0.04) | 12 55 26.19 | 12 55 26.34 (0.03) | 12 55 27.29 | |||||
| Declination | 47 57 18.64 (0.03) | 47 57 18.65 (0.04) | 47 57 18.64 | 47 57 19.26 (0.03) | 47 57 16.20 | |||||
| Spectral type | DA | DA | DA | DA3.4 | DA3 | |||||
| Effective temperature | [K] | 13730.0 | 14650.0 (301) | 15011.0 (190) | ||||||
| log(g) | [cgs] | 7.58 | 7.73 (0.06) | 7.70 (0.01) | ||||||
| Mass | [M☉] | 0.402 | 0.47 (0.03) | 0.459 (0.009) | ||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 0.1450 | ||||||||
| 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] | 7.45 (0.05) | 7.36 (0.07) | 7.45 | 7.45 (0.05) | |||||
| Distance | [pc] | 134.23 (0.8) | 135.92 (1) | 127.00 | 134.23 | 134.23 (0.8) | ||||
| Composition | H | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | -97.70685772 (0.04) | -97.88199117 (0.08) | -97.707 (0.04) | ||||||
| Proper motion (declination) | [mas/yr] | -38.74765064 (0.04) | -38.56309596 (0.09) | -38.748 (0.04) | ||||||
| Variability | NOV | |||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 16.50 | |||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 16.74 (0.007) | |||||||||
| g magnitude | 16.38 (0.004) | |||||||||
| r magnitude | 16.68 (0.005) | |||||||||
| i magnitude | 16.94 (0.006) | |||||||||
| z magnitude | 17.21 (0.01) | |||||||||
| G magnitude | 16.54 (0.003) | 16.56 | 16.54 | 16.54 (0.003) | ||||||
| BP magnitude | 16.51 (0.003) | 16.49 | ||||||||
| RP magnitude | 16.63 (0.008) | 16.63 | ||||||||
| Pan g magnitude | 16.43 (0.005) | |||||||||
| Pan r magnitude | 16.69 (0.006) | |||||||||
| Pan i magnitude | 16.96 (0.002) | |||||||||
| Pan z magnitude | 17.19 (0.004) | |||||||||
| Pan y magnitude | 17.33 (0.007) | |||||||||
| E(B-V) | 0.009 | |||||||||
* Constant surface field
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