GD 98
All names: PG 0854+405, USNO-B1.0 1302-00194402, WD 0854+40, J0857+4016, GALEX J085730.4+401612, FBS B 58, GEN# +6.10060098, 2MASS J08573043+4016130, UCAC2 45821721, LP 210-8, TIC 416856967, GD 98, Gaia DR2 720353602808918016, FBS 0854+405, KUV 08543+4028, WD 0854+404, LSPM J0857+4016, UCAC4 652-048956, Gaia EDR3 720353602808918016, KUV 345-34, EGGR 218, Gaia DR3 720353602808918016, SDSS J085730.46+401612.6, WDJ085730.45+401613.04, 1SWASP J085730.45+401613.2, GCRV 21694, SDSS J085730.46+401612.7, NLTT 20587
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Kilic et al. 2020 | MWDD H | Gaia DR2 | Stilism | Koester et al. 2014 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 57 30.49 (0.03) | 08 57 30.49 (0.05) | 08 57 30.49 | 08 57 30.45 (0.03) | 08 57 30.49 | 08 57 30.62 | ||||||||
| Declination | 40 16 10.00 (0.02) | 40 16 10.10 (0.03) | 40 16 10.00 | 40 16 13.04 (0.02) | 40 16 10.10 | 40 16 18.12 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | DA2.2 | DA2.5 | |||||||
| Effective temperature | [K] | 22518.0 (222) | 22522.0 (220) | 20759.0 | 22813.0 (310) | 23070.0 (353) | 23271.0 (253) | |||||||
| log(g) | [cgs] | 7.97 (0.008) | 7.95 (0.01) | 7.86 | 7.93 (0.09) | 7.96 (0.05) | 8.00 (0.01) | |||||||
| Mass | [M☉] | 0.611 (0.007) | 0.604 (0.007) | 0.552 | 0.593 (0.05) | 0.61 (0.03) | 0.632 (0.008) | |||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.0413 | ||||||||||||
| log(H/He) | ||||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | ||||||||||||||
| log(Ca/H) | ||||||||||||||
| log(C/H) | <-8.10 | |||||||||||||
| log(N/H) | ||||||||||||||
| log(O/H) | ||||||||||||||
| log(Na/H) | ||||||||||||||
| log(Mg/H) | ||||||||||||||
| log(Al/H) | ||||||||||||||
| log(Si/H) | -7.9 (0.2) | |||||||||||||
| 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] | 13.81 (0.04) | 13.68 (0.07) | 13.81 | 13.81 (0.04) | 13.68 (0.07) | ||||||||
| Distance | [pc] | 72.43 (0.2) | 73.09 (0.4) | 77.00 | 72.43 | 72.43 (0.2) | 73.09 (0.4) | |||||||
| Composition | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 29.04196288 (0.04) | 28.88635297 (0.09) | 29.042 (0.04) | 28.88635297 | |||||||||
| Proper motion (declination) | [mas/yr] | -189.7639732 (0.03) | -189.7768507 (0.07) | -189.764 (0.03) | -189.7768507 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 14.70 (0.0007) | |||||||||||||
| V magnitude | 14.81 (0.02) | 14.82 (0.0005) | ||||||||||||
| R magnitude | 14.94 (0.003) | |||||||||||||
| I magnitude | 15.06 (0.004) | |||||||||||||
| J magnitude | 15.42 (0.009) | |||||||||||||
| H magnitude | 15.50 (0.01) | |||||||||||||
| K magnitude | 15.55 (0.03) | |||||||||||||
| u magnitude | 15.17 (0.007) | 15.17 (0.007) | ||||||||||||
| g magnitude | 15.44 (0.006) | 15.44 (0.006) | ||||||||||||
| r magnitude | 15.18 (0.003) | 15.18 (0.003) | ||||||||||||
| i magnitude | 15.65 (0.008) | 15.65 (0.008) | ||||||||||||
| z magnitude | 15.57 (0.008) | 15.57 (0.008) | ||||||||||||
| G magnitude | 14.81 (0.002) | 14.83 | 14.81 | 14.81 (0.003) | 14.83 | |||||||||
| BP magnitude | 14.71 (0.002) | 14.67 | 14.67 | |||||||||||
| RP magnitude | 15.03 (0.001) | 15.03 | 15.03 | |||||||||||
| Pan g magnitude | 14.67 (0.002) | |||||||||||||
| Pan r magnitude | 15.03 (0.002) | |||||||||||||
| Pan i magnitude | 15.34 (0.003) | |||||||||||||
| Pan z magnitude | 15.62 (0.004) | |||||||||||||
| Pan y magnitude | 15.80 (0.004) | |||||||||||||
| E(B-V) | 0.002 | |||||||||||||
* Constant surface field
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