SDSS J154213.48+034800.4
All names: WD 1539+039, SDSS J154213.48+034800.4, SDSS J154213.47+034800.4, PSO J154213.458+034800.612, Gaia DR2 4424618202454872960
| Parameter | Unit | MWDD H | Pan-STARRS DR1 | Gaia DR2 | Ferrario et al. 2015 | Kulebi et al. 2009 | Harris et al. 2003 | SDSS DR12 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 42 13.44 (0.3) | 15 42 13.48 | 15 42 13.47 | 15 42 13.48 | 15 42 13.06 | 15 42 13.48 | 15 42 13.48 | |||||
| Declination | 03 48 00.54 (0.2) | 03 48 00.40 | 03 48 00.39 | 03 48 00.43 | 03 47 58.56 | 03 48 00.42 | 03 48 00.42 | |||||
| Spectral type | DA | DA | DAH | DAH | DAH | DAH | DAH | DAH | ||||
| Effective temperature | [K] | 9809.0 | 8500.0 | 13752.0 (341) | 15760.0 (877) | |||||||
| log(g) | [cgs] | 8.61 | 8.00 (0) | 9.99 (0.02) | 10.00 (0.009) | |||||||
| Mass | [M☉] | 0.991 | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 1.9530 | ||||||||||
| 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] | 6.81 (0.4) | ||||||||||
| Distance | [pc] | 146.74 (8) | ||||||||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -33.8846571304 (0.5) | -4.0 | |||||||||
| Proper motion (declination) | [mas/yr] | 10.0089866224 (0.5) | 1.0 | |||||||||
| Variability | ||||||||||||
| Magnetic | yes | yes | yes | yes | ||||||||
| Bd | [MG] | 8.35 (3) | 8.35 (3) | |||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 19.55 | 19.48 (0.03) | 19.60 | 19.56 | 19.60 (0.03) | 19.60 (0.03) | ||||||
| g magnitude | 19.11 | 19.09 (0.01) | 19.12 | 19.11 | 19.12 (0.02) | 19.12 (0.02) | ||||||
| r magnitude | 19.11 | 19.14 (0.01) | 19.12 | 19.11 | 19.12 (0.02) | 19.12 (0.02) | ||||||
| i magnitude | 19.23 | 19.27 (0.02) | 19.24 | 19.23 | 19.24 (0.03) | 19.24 (0.03) | ||||||
| z magnitude | 19.44 | 19.44 (0.06) | 19.47 | 19.43 | 19.47 (0.07) | 19.47 (0.07) | ||||||
| G magnitude | 19.11 | |||||||||||
| BP magnitude | 19.19 | |||||||||||
| RP magnitude | 19.05 | |||||||||||
| Pan g magnitude | 19.09 (0.01) | |||||||||||
| Pan r magnitude | 19.15 (0.007) | |||||||||||
| Pan i magnitude | 19.29 (0.01) | |||||||||||
| Pan z magnitude | 19.42 (0.01) | |||||||||||
| Pan y magnitude | 19.54 (0.04) | |||||||||||
* Constant surface field
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