SDSS J163721.87+312918.1
All names: WD 1635+315, SDSS J163721.87+312918.1, Gaia DR2 1312616772448637824, SDSS J163721.80+312918.1, [HHD2009] SDSS J1637+3129, Gaia EDR3 1312616776745274112, SDSS J163721.87+312918.2, Gaia DR3 1312616776745274112, WIRED J163721.87+312918.1, SDSS J163721.88+312918.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 37 21.87 (0.4) | 16 37 21.88 | 16 37 21.87 (0.5) | 16 37 21.87 | 16 37 21.87 (0.4) | 16 37 21.88 | 16 37 21.48 | 16 37 21.88 | ||||
| Declination | 31 29 18.31 (0.5) | 31 29 18.21 | 31 29 18.31 (0.6) | 31 29 18.10 | 31 29 18.22 (0.5) | 31 29 18.18 | 31 29 14.64 | 31 29 18.18 | ||||
| Spectral type | DA+M | DA+M | DA+M | DA+M | DA d | DA+M | ||||||
| Effective temperature | [K] | 7462.0 | 23343.0 (2101) | 8833.0 (119) | 8485.0 (126) | |||||||
| log(g) | [cgs] | 6.32 | 8.08 (0.3) | 8.58 (0.2) | 8.57 (0.2) | |||||||
| Mass | [M☉] | 0.073 | 0.68 (0.2) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| 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] | 0.32 (0.6) | 2.29 (0.7) | 0.32 (0.6) | ||||||||
| Distance | [pc] | 3084.69 (5268) | 437.05 (131) | 278.00 (13) | 3084.52 (5268) | |||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -5.272142026 (0.5) | -6.534015772 (1) | -5.272 (0.5) | 0.2 | |||||||
| Proper motion (declination) | [mas/yr] | 5.59513681 (0.6) | 4.432024069 (1) | 5.595 (0.6) | 3.7 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | WDMS | |||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 17.22 (0.02) | |||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 19.70 (0.03) | 19.67 | 19.69 (0.03) | 19.67 (0.03) | 19.67 | 19.68 (0.03) | ||||||
| g magnitude | 19.47 (0.01) | 19.48 | 19.48 (0.01) | 19.48 (0.02) | 19.48 | 19.47 (0.02) | ||||||
| r magnitude | 19.66 (0.02) | 19.65 | 19.66 (0.02) | 19.65 (0.02) | 19.65 | 19.66 (0.02) | ||||||
| i magnitude | 19.26 (0.02) | 19.25 | 19.25 (0.02) | 19.25 (0.02) | 19.25 | 19.26 (0.02) | ||||||
| z magnitude | 18.68 (0.04) | 18.69 | 18.68 (0.04) | 18.69 (0.04) | 18.69 | 18.68 (0.04) | ||||||
| G magnitude | 19.70 (0.04) | 19.62 | 19.70 (0.01) | |||||||||
| BP magnitude | 19.61 (0.04) | 19.55 | ||||||||||
| RP magnitude | 18.81 (0.04) | 18.79 | ||||||||||
| Pan g magnitude | 19.48 (0.01) | |||||||||||
| Pan r magnitude | 19.72 (0.01) | |||||||||||
| Pan i magnitude | 19.31 (0.02) | |||||||||||
| Pan z magnitude | 18.78 (0.01) | |||||||||||
| Pan y magnitude | 18.48 (0.04) | |||||||||||
| E(B-V) | 0.023 | |||||||||||
* Constant surface field
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