SDSS J084751.61+283113.5
All names: WD 0844+287, WIRED J084751.61+283113.5, LAMOST J084751.61+283113.5, SDSS J084751.61+283113.6, [HHD2009] SDSS J0847+2831, Gaia DR3 705139896637258880, Gaia DR2 705139896637258880, Gaia EDR3 705139896637258880, SDSS J084751.60+283113.5, SDSS J084751.61+283113.5
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Guo et al. 2015 | 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 | 08 47 51.61 (0.2) | 08 47 51.61 | 08 47 51.61 (0.3) | 08 47 51.61 | 08 47 51.61 | 08 47 51.62 (0.2) | 08 47 51.61 | 08 47 51.00 | 08 47 51.61 | |||||||
| Declination | 28 31 13.42 (0.1) | 28 31 13.58 | 28 31 13.42 (0.2) | 28 31 13.51 | 28 31 13.42 | 28 31 13.61 (0.1) | 28 31 13.59 | 28 31 06.96 | 28 31 13.59 | |||||||
| Spectral type | DA+M | DA+M | DA+M? | DA | DA | DA+M | DA+M: | DA dM | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 9784.0 | 13432.0 (638) | 15160.0 (490) | 8341.0 (207) | 13163.0 (426) | 12562.0 (288) | |||||||||
| log(g) | [cgs] | 7.15 | 7.73 (0.1) | 8.03 (0.08) | 6.71 (0.2) | 7.84 (0.08) | 8.05 (0.09) | |||||||||
| Mass | [M☉] | 0.249 | 0.46 (0.07) | 0.63 (0.05) | 0.148 (0.05) | |||||||||||
| log(Luminosity) | [L☉] | |||||||||||||||
| Cooling age | [Gyr] | 0.2826 | 0.2239 | |||||||||||||
| 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] | 2.71 (0.2) | 2.60 (0.3) | 2.71 | 2.71 (0.2) | |||||||||||
| Distance | [pc] | 369.40 (33) | 384.11 (49) | 868.00 (116) | 369.40 | 369.40 (33) | ||||||||||
| Composition | H | H | ||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -0.505492574 (0.2) | -0.845035026 (0.5) | -0.505 (0.2) | -4.0 | |||||||||||
| Proper motion (declination) | [mas/yr] | -12.15586739 (0.2) | -12.02325019 (0.3) | -12.156 (0.2) | -9.5 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | WDMS | WDMS | WDMS | WDMS | ||||||||||||
| B magnitude | ||||||||||||||||
| V magnitude | ||||||||||||||||
| R magnitude | ||||||||||||||||
| I magnitude | ||||||||||||||||
| J magnitude | 17.58 (0.02) | |||||||||||||||
| H magnitude | 17.11 (0.04) | |||||||||||||||
| K magnitude | 16.86 (0.06) | |||||||||||||||
| u magnitude | 19.27 (0.02) | 19.26 | 19.27 (0.03) | 19.26 (0.03) | 19.26 | 19.26 (0.03) | ||||||||||
| g magnitude | 18.89 (0.009) | 18.87 | 18.89 (0.009) | 18.87 (0.01) | 18.87 | 18.88 (0.01) | ||||||||||
| r magnitude | 19.11 (0.01) | 19.11 | 19.11 (0.01) | 19.11 (0.02) | 19.11 | 19.11 (0.02) | ||||||||||
| i magnitude | 19.16 (0.01) | 19.17 | 19.16 (0.01) | 19.17 (0.02) | 19.17 | 19.18 (0.02) | ||||||||||
| z magnitude | 18.96 (0.04) | 18.95 | 18.96 (0.04) | 18.95 (0.04) | 18.95 | 18.97 (0.04) | ||||||||||
| G magnitude | 18.93 (0.02) | 18.96 | 18.93 | 18.93 (0.003) | ||||||||||||
| BP magnitude | 19.03 (0.02) | 18.96 | ||||||||||||||
| RP magnitude | 18.73 (0.03) | 18.73 | ||||||||||||||
| Pan g magnitude | 18.90 (0.004) | |||||||||||||||
| Pan r magnitude | 19.12 (0.005) | |||||||||||||||
| Pan i magnitude | 19.14 (0.006) | |||||||||||||||
| Pan z magnitude | 18.96 (0.01) | |||||||||||||||
| Pan y magnitude | 18.77 (0.03) | |||||||||||||||
| E(B-V) | 0.021 | |||||||||||||||
* Constant surface field
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