SDSS J074857.89+254045.4
All names: SDSS J074857.89+254045.4, SDSS J074857.90+254045.4, [HHD2009] SDSS J0748+2540, Gaia DR3 874004472979262336, Gaia EDR3 874004472979262336, WD 0745+258, Gaia DR2 874004472979262336, WIRED J074857.89+254045.4, SDSS J074857.89+254045.3, GALEX J074857.8+254045
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | 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 | 07 48 57.88 (0.2) | 07 48 57.89 | 07 48 57.88 (0.3) | 07 48 57.89 | 07 48 57.88 | 07 48 57.90 (0.2) | 07 48 57.89 | 07 48 57.48 | 07 48 57.90 | |||||
| Declination | 25 40 45.22 (0.1) | 25 40 45.37 | 25 40 45.23 (0.2) | 25 40 45.41 | 25 40 45.22 | 25 40 45.41 (0.1) | 25 40 45.42 | 25 40 39.36 | 25 40 45.42 | |||||
| Spectral type | DA+M | DA+M | DA | DA+M | DA+M | DA d | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 8397.0 | 12828.0 (967) | 10478.0 (102) | 10353.0 (102) | |||||||||
| log(g) | [cgs] | 7.00 | 7.64 (0.2) | 8.14 (0.1) | 8.12 (0.1) | |||||||||
| Mass | [M☉] | 0.209 | 0.42 (0.1) | |||||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.3778 | ||||||||||||
| 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] | 3.35 (0.2) | 3.10 (0.3) | 3.35 | 3.35 (0.2) | |||||||||
| Distance | [pc] | 298.41 (20) | 323.08 (33) | 1863.00 (666) | 298.41 | 298.41 (20) | ||||||||
| Composition | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -13.32629793 (0.2) | -13.84742248 (0.5) | -13.326 (0.2) | -14.9 | |||||||||
| Proper motion (declination) | [mas/yr] | -11.88317178 (0.1) | -11.78605511 (0.3) | -11.883 (0.1) | -8.8 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | WDMS | WDMS | WDMS | WDMS | ||||||||||
| B magnitude | ||||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 17.24 (0.02) | |||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 19.40 (0.03) | 19.42 | 19.40 (0.03) | 19.42 (0.03) | 19.42 | 19.40 (0.03) | ||||||||
| g magnitude | 18.97 (0.009) | 18.99 | 18.97 (0.009) | 18.99 (0.01) | 18.99 | 18.99 (0.01) | ||||||||
| r magnitude | 19.13 (0.01) | 19.12 | 19.13 (0.01) | 19.12 (0.02) | 19.12 | 19.12 (0.02) | ||||||||
| i magnitude | 18.98 (0.01) | 18.97 | 18.98 (0.01) | 18.97 (0.02) | 18.97 | 18.97 (0.02) | ||||||||
| z magnitude | 18.55 (0.02) | 18.54 | 18.55 (0.03) | 18.54 (0.03) | 18.54 | 18.54 (0.03) | ||||||||
| G magnitude | 18.91 (0.02) | 18.94 | 18.91 | 18.91 (0.004) | ||||||||||
| BP magnitude | 19.09 (0.02) | 19.05 | ||||||||||||
| RP magnitude | 18.55 (0.02) | 18.52 | ||||||||||||
| Pan g magnitude | 18.96 (0.009) | |||||||||||||
| Pan r magnitude | 19.14 (0.01) | |||||||||||||
| Pan i magnitude | 19.00 (0.006) | |||||||||||||
| Pan z magnitude | 18.70 (0.01) | |||||||||||||
| Pan y magnitude | 18.43 (0.03) | |||||||||||||
| E(B-V) | 0.015 | |||||||||||||
* Constant surface field
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