SDSS J154054.29+421851.3
All names: SDSS J154054.28+421851.2, Gaia DR3 1390382274943455616, SDSS J154054.29+421851.3, Gaia DR2 1390382274943455616, WD 1539+424, Gaia EDR3 1390382274943455616, GALEX J154054.3+421850, SDSS J154054.30+421851.4
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 40 54.30 (0.4) | 15 40 54.29 | 15 40 54.30 (0.6) | 15 40 54.29 (0.4) | 15 40 54.29 | 15 40 53.81 | 15 40 54.30 | |||||
| Declination | 42 18 51.31 (0.4) | 42 18 51.24 | 42 18 51.31 (0.6) | 42 18 51.20 (0.4) | 42 18 51.37 | 42 18 49.32 | 42 18 51.38 | |||||
| Spectral type | DA | DA | DA_auto | DA | DA | DA | ||||||
| Effective temperature | [K] | 8813.0 | 10557.0 (301) | 10712.0 (332) | ||||||||
| log(g) | [cgs] | 7.17 | 8.31 (0.3) | 8.50 (0.3) | ||||||||
| Mass | [M☉] | 0.25 | 0.906 (0.2) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.3829 | ||||||||||
| 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] | 2.42 (0.5) | 1.86 (0.7) | 2.42 (0.5) | ||||||||
| Distance | [pc] | 412.80 (79) | 536.92 (190) | 412.80 (79) | ||||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 7.248896891 (0.4) | 7.406039007 (1) | 7.249 (0.4) | 3.8 | |||||||
| Proper motion (declination) | [mas/yr] | 6.761728944 (0.6) | 6.04392829 (1) | 6.762 (0.6) | 8.3 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 20.61 (0.07) | 20.61 (0.07) | 20.60 (0.07) | 20.60 | 20.63 (0.07) | |||||||
| g magnitude | 20.21 (0.02) | 20.21 (0.02) | 20.22 (0.03) | 20.22 | 20.23 (0.03) | |||||||
| r magnitude | 20.30 (0.03) | 20.30 (0.03) | 20.29 (0.03) | 20.29 | 20.30 (0.03) | |||||||
| i magnitude | 20.43 (0.04) | 20.43 (0.04) | 20.44 (0.04) | 20.44 | 20.44 (0.04) | |||||||
| z magnitude | 20.32 (0.1) | 20.32 (0.1) | 20.27 (0.1) | 20.28 | 20.29 (0.1) | |||||||
| G magnitude | 20.25 (0.09) | 20.33 | 20.25 (0.006) | |||||||||
| BP magnitude | 20.35 (0.09) | 20.31 | ||||||||||
| RP magnitude | 19.99 (0.08) | 20.04 | ||||||||||
| Pan g magnitude | 20.22 (0.02) | |||||||||||
| Pan r magnitude | 20.32 (0.01) | |||||||||||
| Pan i magnitude | 20.48 (0.02) | |||||||||||
| Pan z magnitude | 20.60 (0.03) | |||||||||||
| Pan y magnitude | ||||||||||||
| E(B-V) | 0.021 | |||||||||||
* Constant surface field
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