SDSS J123406.86+443115.2
All names: Gaia EDR3 1541517539821176576, SDSS J123406.86+443115.2, SDSS J123406.87+443115.3, WD 1231+447, [HHD2009] SDSS J1234+4431, Gaia DR2 1541517539821176576, GALEX J123406.8+443115, WIRED J123406.86+443115.2, LAMOST J123406.86+443115.2, Gaia DR3 1541517539821176576
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Tremblay et al. 2011 | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 34 06.86 (0.05) | 12 34 06.87 | 12 34 06.86 (0.06) | 12 34 06.86 | 12 34 06.86 | 12 34 06.87 (0.05) | 12 34 06.87 | 12 34 06.31 | 12 34 06.87 | ||||||
| Declination | 44 31 15.21 (0.06) | 44 31 15.29 | 44 31 15.21 (0.09) | 44 31 15.20 | 44 31 15.21 | 44 31 15.26 (0.06) | 44 31 15.27 | 44 31 10.20 | 44 31 15.28 | ||||||
| Spectral type | DA+M | DA+M | DA | DA | DA+dM | DA+M: | DA dM: | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 14330.0 | 27425.0 (348) | 28310.0 (280) | 22990.0 (744) | 26866.0 (200) | 26995.0 (260) | ||||||||
| log(g) | [cgs] | 7.07 | 7.86 (0.07) | 7.84 (0.05) | 7.67 (0.04) | 7.80 (0.04) | 7.79 (0.04) | ||||||||
| Mass | [M☉] | 0.254 | 0.57 (0.03) | 0.56 (0.02) | 0.466 (0.02) | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||
| Cooling age | [Gyr] | 0.0823 | 0.0112 | ||||||||||||
| 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] | 3.36 (0.09) | 3.10 (0.1) | 3.36 | 3.36 (0.09) | ||||||||||
| Distance | [pc] | 297.79 (8) | 322.94 (14) | 682.00 (266) | 297.79 | 297.80 (8) | |||||||||
| Composition | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -1.858280914 (0.06) | -1.610492761 (0.1) | -1.858 (0.06) | -3.9 | ||||||||||
| Proper motion (declination) | [mas/yr] | -3.581092868 (0.07) | -3.377075324 (0.2) | -3.581 (0.07) | -3.8 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | WDMS | WDMS | WDMS | WDMS | |||||||||||
| B magnitude | |||||||||||||||
| V magnitude | |||||||||||||||
| R magnitude | |||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | |||||||||||||||
| H magnitude | |||||||||||||||
| K magnitude | |||||||||||||||
| u magnitude | 17.17 (0.008) | 17.16 | 17.17 (0.008) | 17.16 (0.01) | 17.16 | 17.19 (0.01) | |||||||||
| g magnitude | 17.32 (0.005) | 17.35 | 17.32 (0.005) | 17.35 (0.02) | 17.35 | 17.34 (0.02) | |||||||||
| r magnitude | 17.76 (0.006) | 17.78 | 17.77 (0.006) | 17.78 (0.02) | 17.78 | 17.77 (0.02) | |||||||||
| i magnitude | 17.93 (0.008) | 17.95 | 17.93 (0.008) | 17.95 (0.01) | 17.95 | 17.94 (0.02) | |||||||||
| z magnitude | 17.81 (0.02) | 17.83 | 17.81 (0.02) | 17.83 (0.02) | 17.83 | 17.81 (0.02) | |||||||||
| G magnitude | 17.52 (0.009) | 17.55 | 17.52 | 17.52 (0.003) | |||||||||||
| BP magnitude | 17.45 (0.009) | 17.37 | |||||||||||||
| RP magnitude | 17.56 (0.01) | 17.53 | |||||||||||||
| Pan g magnitude | 17.40 (0.004) | ||||||||||||||
| Pan r magnitude | 17.79 (0.004) | ||||||||||||||
| Pan i magnitude | 17.95 (0.005) | ||||||||||||||
| Pan z magnitude | 17.91 (0.01) | ||||||||||||||
| Pan y magnitude | 17.83 (0.008) | ||||||||||||||
| E(B-V) | 0.018 | ||||||||||||||
* Constant surface field
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