GD 200
All names: SDSS J162234.54+255517.1, Gaia DR2 1303425340573568640, LAMOST J162234.60+255516.3, WD 1620+260, Ton S 816, PG 1620+260, Ton 816, WD 1620+26, USNO-B1.0 1159-00239196, GD 200, Gaia DR3 1303425340573568640, 2MASS J16223455+2555173, TIC 309906358, GALEX J162234.6+255516, EGGR 275, FB 165, Gaia EDR3 1303425340573568640, GSC 02047-00494, GEN# +6.10060200, PG 1620+26
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Guo et al. 2015 | Gianninas et al. 2011 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 22 34.49 (0.02) | 16 22 34.49 (0.03) | 16 22 34.49 | 16 22 34.56 (0.02) | 16 22 35.18 | |||||||
| Declination | 25 55 15.74 (0.03) | 25 55 15.79 (0.04) | 25 55 15.74 | 25 55 17.55 (0.03) | 25 55 14.88 | |||||||
| Spectral type | DA | DA | DA | DA | DA1.7 | DA1 | ||||||
| Effective temperature | [K] | 24703.0 | 29074.0 (217) | 29110.0 (427) | 28290.0 (417) | 27684.0 (344) | ||||||
| log(g) | [cgs] | 7.58 | 7.67 (0.05) | 7.86 (0.05) | 7.78 (0.05) | 7.72 (0.01) | ||||||
| Mass | [M☉] | 0.44 | 0.49 (0.02) | 0.57 (0.02) | 0.54 (0.02) | 0.505 (0.008) | ||||||
| log(Luminosity) | [L☉] | -0.85 | ||||||||||
| Cooling age | [Gyr] | 0.0174 | 0.0126 | |||||||||
| 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] | 6.98 (0.04) | 6.99 (0.05) | 6.98 | 6.98 (0.04) | |||||||
| Distance | [pc] | 143.19 (0.8) | 142.99 (1) | 139.00 | 145.00 | 143.19 | 143.19 (0.8) | |||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -58.67134709 (0.03) | -58.76366874 (0.07) | -58.671 (0.03) | ||||||||
| Proper motion (declination) | [mas/yr] | -113.5885505 (0.04) | -113.6038304 (0.09) | -113.589 (0.04) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 15.36 | |||||||||||
| V magnitude | 15.53 | 15.53 | ||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 16.10 (0.007) | |||||||||||
| H magnitude | 16.20 (0.02) | |||||||||||
| K magnitude | 16.35 (0.04) | |||||||||||
| u magnitude | 15.07 (0.01) | 15.07 | ||||||||||
| g magnitude | 15.26 (0.02) | 15.24 | ||||||||||
| r magnitude | 15.71 (0.01) | 15.70 | ||||||||||
| i magnitude | 16.05 (0.02) | 16.05 | ||||||||||
| z magnitude | 16.39 (0.02) | 16.39 | ||||||||||
| G magnitude | 15.50 (0.002) | 15.52 | 15.50 | 15.50 (0.003) | ||||||||
| BP magnitude | 15.38 (0.002) | 15.32 | ||||||||||
| RP magnitude | 15.76 (0.002) | 15.76 | ||||||||||
| Pan g magnitude | 15.34 (0.005) | |||||||||||
| Pan r magnitude | 15.74 (0.002) | |||||||||||
| Pan i magnitude | 16.09 (0.003) | |||||||||||
| Pan z magnitude | 16.37 (0.003) | |||||||||||
| Pan y magnitude | 16.55 (0.005) | |||||||||||
| E(B-V) | 0.021 | |||||||||||
* Constant surface field
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