WD 2306+124
All names: J2308+1245, USNO-B1.0 1027-00771579, Gaia DR2 2811882073278282496, SDSS J230834.99+124540.4, GALEX J230834.9+124540, PG 2306+125, TIC 217978811, Gaia DR3 2811882073278282496, KUV 23061+1229, WD2306+124, 2MASS J23083499+1245402, Gaia EDR3 2811882073278282496, WD 2306+124, WDJ230834.99+124540.28
| 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 | Koester et al. 2009 | Koester et al. 2001 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 08 34.99 (0.04) | 23 08 34.99 (0.07) | 23 08 35.10 | 23 08 34.99 | 23 08 34.99 (0.04) | 23 08 34.99 | 23 08 34.37 | |||||||||
| Declination | 12 45 40.55 (0.03) | 12 45 40.54 (0.05) | 12 45 39.00 | 12 45 40.55 | 12 45 40.28 (0.03) | 12 45 40.54 | 12 45 39.96 | |||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA2.4 | DA3 | ||||||||
| Effective temperature | [K] | 20597.0 (318) | 20597.0 (319) | 19166.0 | 20645.0 (280) | 21010.0 (335) | 20360.0 (38) | 20454.0 (93) | 20001.0 (304) | |||||||
| log(g) | [cgs] | 8.08 (0.01) | 8.08 (0.01) | 8.00 | 8.07 (0.09) | 8.09 (0.05) | 7.99 (0.006) | 7.92 (0.01) | 8.05 (0.01) | |||||||
| Mass | [M☉] | 0.672 (0.01) | 0.671 (0.01) | 0.624 | 0.663 (0.05) | 0.68 (0.03) | 0.58 | 0.651 (0.01) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||||||
| Cooling age | [Gyr] | 0.0838 | ||||||||||||||
| log(H/He) | ||||||||||||||||
| log(C/He) | ||||||||||||||||
| log(Ca/He) | ||||||||||||||||
| log(Ca/H) | ||||||||||||||||
| log(C/H) | -8 (0.2) | |||||||||||||||
| log(N/H) | ||||||||||||||||
| log(O/H) | ||||||||||||||||
| log(Na/H) | ||||||||||||||||
| log(Mg/H) | ||||||||||||||||
| log(Al/H) | ||||||||||||||||
| log(Si/H) | -7.6 (0.1) | |||||||||||||||
| 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] | 13.80 (0.04) | 13.80 (0.08) | 13.80 | 13.80 (0.04) | 13.80 (0.08) | ||||||||||
| Distance | [pc] | 72.44 (0.2) | 72.46 (0.4) | 63.00 | 72.44 | 72.44 (0.2) | 72.46 (0.4) | |||||||||
| Composition | H | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 5.147714756 (0.05) | 5.342433307 (0.2) | 5.148 (0.05) | 5.342433307 | |||||||||||
| Proper motion (declination) | [mas/yr] | 17.03613455 (0.04) | 17.05397316 (0.1) | 17.036 (0.04) | 17.05397316 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | ||||||||||||||||
| B magnitude | 15.23 | |||||||||||||||
| V magnitude | 15.08 (0.05) | 15.23 | 15.23 | 15.23 | ||||||||||||
| R magnitude | 15.20 | |||||||||||||||
| I magnitude | ||||||||||||||||
| J magnitude | 15.67 (0.01) | |||||||||||||||
| H magnitude | 15.64 (0.02) | |||||||||||||||
| K magnitude | 15.73 (0.07) | |||||||||||||||
| u magnitude | 15.00 (0.004) | 15.00 (0.004) | ||||||||||||||
| g magnitude | 14.96 (0.003) | 14.96 (0.003) | ||||||||||||||
| r magnitude | 15.33 (0.003) | 15.33 (0.003) | ||||||||||||||
| i magnitude | 15.62 (0.003) | 15.62 (0.003) | ||||||||||||||
| z magnitude | 15.90 (0.007) | 15.90 (0.007) | ||||||||||||||
| G magnitude | 15.16 (0.002) | 15.18 | 15.16 | 15.16 (0.003) | 15.18 | |||||||||||
| BP magnitude | 15.08 (0.002) | 15.05 | 15.05 | |||||||||||||
| RP magnitude | 15.34 (0.002) | 15.35 | 15.35 | |||||||||||||
| Pan g magnitude | 15.01 (0.005) | |||||||||||||||
| Pan r magnitude | 15.35 (0.001) | |||||||||||||||
| Pan i magnitude | 15.67 (0.003) | |||||||||||||||
| Pan z magnitude | 15.92 (0.002) | |||||||||||||||
| Pan y magnitude | 16.10 (0.007) | |||||||||||||||
| E(B-V) | 0.006 | |||||||||||||||
* Constant surface field
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