Wolf 309
All names: 0826+455, GEN# +6.10060091, Wolf 309, SDSS J083009.43+452030.2, Gaia DR2 918044247294118656, WDJ083009.45+452030.30, FBS 0826+455, WD 0826+455, LTT 12215, Gaia EDR3 918044247294118656, FBS B 253, Gaia DR3 918044247294118656, J0830+4520, GALEX J083009.4+452029, PG 0826+455, EGGR 217, UCAC4 677-049880, GCRV 21693, TIC 27321433, GD 91, WD 0826+45, 2MASS J08300946+4520303
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Leggett et al. 2018 | MWDD H | Gaia DR2 | Stilism | Gianninas et al. 2011 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 30 09.29 (0.02) | 08 30 09.30 (0.04) | 08 30 09.29 | 08 30 09.45 (0.02) | 08 30 09.30 | 08 30 09.82 | ||||||||
| Declination | 45 20 28.47 (0.02) | 45 20 28.53 (0.03) | 45 20 28.47 | 45 20 30.30 (0.02) | 45 20 28.53 | 45 20 31.56 | ||||||||
| Spectral type | DA | DA5.0 | DA | DA | DA | DA4.8 | DA5 | |||||||
| Effective temperature | [K] | 10149.0 (33) | 10044.0 (280) | 10034.0 | 10550.0 (152) | 10370.0 (151) | 10056.0 (42) | |||||||
| log(g) | [cgs] | 7.63 (0.006) | 7.68 (0.05) | 7.62 | 7.94 (0.05) | 7.86 (0.05) | 7.62 (0.007) | |||||||
| Mass | [M☉] | 0.412 (0.004) | 0.43 (0.03) | 0.404 | 0.57 (0.03) | 0.52 (0.03) | 0.404 (0.004) | |||||||
| log(Luminosity) | [L☉] | -2.68 | ||||||||||||
| Cooling age | [Gyr] | 0.3900 | 0.4080 (0.04) | 0.3852 | 0.5129 | |||||||||
| 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] | 20.34 (0.03) | 20.37 (0.05) | 21.13 (0.5) | 20.37 (0.05) | 20.34 | 20.34 (0.03) | 20.37 (0.05) | ||||||
| Distance | [pc] | 49.17 (0.07) | 49.09 (0.1) | 47.33 (1) | 49.09 (0.1) | 43.00 | 45.00 | 49.17 | 49.17 (0.07) | 49.09 (0.1) | ||||
| Composition | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -100.9242479 (0.03) | -100.8329568 (0.07) | -100.924 (0.03) | -100.8329568 | |||||||||
| Proper motion (declination) | [mas/yr] | -114.27152 (0.02) | -114.3258623 (0.06) | -114.272 (0.02) | -114.3258623 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 15.25 (0.007) | |||||||||||||
| V magnitude | 15.09 | 15.07 (0.004) | ||||||||||||
| R magnitude | 15.03 (0.008) | |||||||||||||
| I magnitude | 14.97 (0.01) | |||||||||||||
| J magnitude | 15.02 (0.01) | 15.00 (0.006) | ||||||||||||
| H magnitude | 15.04 (0.09) | 14.95 (0.009) | ||||||||||||
| K magnitude | 14.84 (0.1) | 14.93 (0.02) | ||||||||||||
| u magnitude | 15.51 (0.004) | 15.51 (0.004) | 15.51 (0.004) | |||||||||||
| g magnitude | 15.03 (0.003) | 15.01 (0.003) | ||||||||||||
| r magnitude | 15.13 (0.003) | 15.12 (0.003) | ||||||||||||
| i magnitude | 15.27 (0.003) | 15.28 (0.003) | ||||||||||||
| z magnitude | 15.49 (0.005) | 15.50 (0.006) | ||||||||||||
| G magnitude | 15.06 (0.001) | 15.08 | 15.06 | 15.06 (0.003) | 15.08 | |||||||||
| BP magnitude | 15.11 (0.001) | 15.11 | 15.11 | |||||||||||
| RP magnitude | 14.99 (0.002) | 15.00 | 15.00 | |||||||||||
| Pan g magnitude | 15.06 (0.003) | 15.06 (0.003) | ||||||||||||
| Pan r magnitude | 15.17 (0.002) | 15.17 (0.003) | ||||||||||||
| Pan i magnitude | 15.31 (0.004) | 15.31 (0.003) | ||||||||||||
| Pan z magnitude | 15.48 (0.005) | 15.48 (0.004) | ||||||||||||
| Pan y magnitude | 15.61 (0.003) | 15.61 (0.003) | ||||||||||||
| E(B-V) | 0.001 | |||||||||||||
* Constant surface field
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