BD+39 539B
All names: NLTT 7890, ** LDS 3381B, Gaia DR2 338094538438744320, Gaia DR3 338094538438744320, Gaia EDR3 338094538438744320, J0224+4007, TIC 129905006, LP 196-060, LP 196-60, WDJ022442.19+400745.24, GALEX J022442.1+400744, 2MASS J02244220+4007458, WDS J02247+4008B, BD+39 0539, LSPM J0224+4007E, WD 0221+399, BD+39 539B, USNO-B1.0 1301-00040439
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | MWDD H | Gaia DR2 | Tremblay et al. 2017 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 24 42.03 (0.08) | 02 24 42.03 (0.1) | 02 24 42.03 | 02 24 42.19 (0.08) | 02 24 42.03 | 02 24 42.58 | |||||||
| Declination | 40 07 42.79 (0.06) | 40 07 42.87 (0.09) | 40 07 42.79 | 40 07 45.23 (0.06) | 40 07 42.87 | 40 08 33.00 | |||||||
| Spectral type | DA | DA | DA | DA | DA | DA8.1 | DA | ||||||
| Effective temperature | [K] | 5977.0 (23) | 5942.0 | 6250.0 (140) | 6250.0 (142) | 5934.0 (47) | |||||||
| log(g) | [cgs] | 8.00 (0.01) | 7.98 | 8.30 (0.2) | 8.31 (0.2) | 7.99 (0.02) | |||||||
| Mass | [M☉] | 0.589 (0.009) | 0.577 | 0.79 (0.1) | 0.58 (0.01) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 2.3600 | 2.2260 | ||||||||||
| 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] | 23.95 (0.1) | 23.79 (0.1) | 23.79 (0.1) | 24.30 (0.4) | 23.95 | 23.95 (0.1) | 23.79 (0.1) | |||||
| Distance | [pc] | 41.75 (0.2) | 42.03 (0.2) | 42.04 (0.3) | 41.15 (0.7) | 38.00 | 41.75 | 41.75 (0.2) | 42.04 (0.3) | ||||
| Composition | H | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -118.6440604 (0.09) | -118.797259 (0.2) | -118.644 (0.1) | -118.797259 | ||||||||
| Proper motion (declination) | [mas/yr] | -152.6559259 (0.08) | -152.7226603 (0.2) | -152.656 (0.08) | -152.7226603 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 16.20 | ||||||||||||
| V magnitude | 17.39 (0.05) | ||||||||||||
| R magnitude | 16.70 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 16.22 (0.01) | 16.15 (0.08) | |||||||||||
| H magnitude | 16.06 (0.2) | 16.06 (0.2) | |||||||||||
| K magnitude | 15.41 (0.2) | 15.41 (0.2) | |||||||||||
| u magnitude | |||||||||||||
| g magnitude | |||||||||||||
| r magnitude | |||||||||||||
| i magnitude | |||||||||||||
| z magnitude | |||||||||||||
| G magnitude | 17.16 (0.007) | 17.18 | 17.07 (0.002) | 17.16 | 17.16 (0.003) | 17.18 | |||||||
| BP magnitude | 17.49 (0.007) | 17.47 | 17.47 | ||||||||||
| RP magnitude | 16.68 (0.008) | 16.70 | 16.70 | ||||||||||
| Pan g magnitude | 17.49 (0.004) | 17.49 (0.005) | |||||||||||
| Pan r magnitude | 17.16 (0.004) | 17.16 (0.005) | |||||||||||
| Pan i magnitude | 17.02 (0.004) | 17.02 (0.004) | |||||||||||
| Pan z magnitude | 17.01 (0.005) | 17.01 (0.005) | |||||||||||
| Pan y magnitude | 17.01 (0.01) | 17.01 (0.01) | |||||||||||
| E(B-V) | 0.001 | ||||||||||||
* Constant surface field
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