GD 203
All names: GD 203, Gaia DR2 4564604522506736000, WD 1655+210, USNO-B1.0 1109-00265757, NLTT 43879, GALEX J165708.9+205607, GEN# +6.10060203, LSPM J1657+2056, Gaia EDR3 4564604522506736000, Gaia DR3 4564604522506736000, EGGR 299
| 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 | 16 57 08.82 (0.03) | 16 57 08.82 (0.04) | 16 57 08.82 | 16 57 08.96 (0.03) | 16 57 09.17 | |||||
| Declination | 20 56 05.47 (0.04) | 20 56 05.57 (0.05) | 20 56 05.47 | 20 56 08.72 (0.04) | 20 55 30.00 | |||||
| Spectral type | DA | DA | DA | DA1.3 | DA6 | |||||
| Effective temperature | [K] | 26309.0 | 38280.0 (666) | 40115.0 (1841) | ||||||
| log(g) | [cgs] | 7.23 | 7.83 (0.06) | 7.67 (0.03) | ||||||
| Mass | [M☉] | 0.344 | 0.59 (0.03) | 0.519 (0.02) | ||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 0.0140 | ||||||||
| 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] | 2.90 (0.05) | 2.95 (0.07) | 2.90 | 2.90 (0.05) | |||||
| Distance | [pc] | 344.80 (6) | 339.20 (8) | 297.00 | 344.80 | 344.80 (6) | ||||
| Composition | H | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | -127.5304539 (0.04) | -127.5192813 (0.09) | -127.53 (0.04) | ||||||
| Proper motion (declination) | [mas/yr] | -203.0175367 (0.05) | -203.0287369 (0.1) | -203.018 (0.05) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 16.39 | |||||||||
| V magnitude | ||||||||||
| R magnitude | 16.70 | |||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 16.65 (0.003) | 16.68 | 16.65 | 16.65 (0.003) | ||||||
| BP magnitude | 16.52 (0.003) | 16.46 | ||||||||
| RP magnitude | 16.94 (0.004) | 16.92 | ||||||||
| Pan g magnitude | 16.48 (0.004) | |||||||||
| Pan r magnitude | 16.90 (0.003) | |||||||||
| Pan i magnitude | 17.25 (0.002) | |||||||||
| Pan z magnitude | 17.53 (0.006) | |||||||||
| Pan y magnitude | 17.73 (0.005) | |||||||||
| E(B-V) | 0.038 | |||||||||
* Constant surface field
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