GALEX 2672580731849409741
All names: SDSS J000447.06+240703.60, USNO-A2.0 1125-00031816, GALEX 2672580731849409741, Gaia DR3 2849752204380859776, Gaia DR2 2849752204380859776, SDSS J000447.06+240703.6, SDSS J000447.05+240703.6, Gaia EDR3 2849752204380859776
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | MWDD HE | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 04 47.06 (0.4) | 00 04 47.06 | 00 04 47.06 (0.5) | 00 04 47.04 (0.5) | 00 04 47.06 | |||||
| Declination | 24 07 03.71 (0.3) | 24 07 03.65 | 24 07 03.71 (0.5) | 24 07 03.69 (0.5) | 24 07 03.60 | |||||
| Spectral type | DB | DB | DB | DB | ||||||
| Effective temperature | [K] | 15328.0 | 28473.0 | 15844.0 (264) | ||||||
| log(g) | [cgs] | 7.75 | 8.05 | 8.06 (0.2) | ||||||
| Mass | [M☉] | 0.457 | 0.643 | 0.62 (0.1) | ||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 0.0133 | ||||||||
| log(H/He) | -5.434 | |||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(N/He) | ||||||||||
| log(O/He) | ||||||||||
| log(Na/He) | ||||||||||
| log(Mg/He) | ||||||||||
| log(Al/He) | ||||||||||
| log(Si/He) | ||||||||||
| log(P/He) | ||||||||||
| log(S/He) | ||||||||||
| log(Cl/He) | ||||||||||
| log(Sc/He) | ||||||||||
| log(Ti/He) | ||||||||||
| log(V/He) | ||||||||||
| log(Cr/He) | ||||||||||
| log(Mn/He) | ||||||||||
| log(Fe/He) | ||||||||||
| log(Co/He) | ||||||||||
| log(Ni/He) | ||||||||||
| log(Cu/He) | ||||||||||
| log(Zn/He) | ||||||||||
| log(Ga/He) | ||||||||||
| log(Ge/He) | ||||||||||
| log(Sr/He) | ||||||||||
| Parallax | [mas] | 1.40 (0.5) | 0.88 (0.6) | 0.88 (0.6) | ||||||
| Distance | [pc] | 713.22 (252) | 1137.30 (769) | 1137.27 (769) | ||||||
| Composition | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | 16.7824916 (0.5) | 16.88386778 (1) | 16.884 (1) | ||||||
| Proper motion (declination) | [mas/yr] | 2.507902294 (0.6) | 0.961695513 (1) | 0.962 (1) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 19.40 (0.3) | |||||||||
| V magnitude | ||||||||||
| R magnitude | 19.20 (0.3) | |||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 20.38 (0.07) | 20.38 (0.07) | 20.17 (0.06) | |||||||
| g magnitude | 20.20 (0.02) | 20.20 (0.02) | 20.06 (0.02) | |||||||
| r magnitude | 20.34 (0.04) | 20.34 (0.04) | 20.25 (0.03) | |||||||
| i magnitude | 20.52 (0.06) | 20.52 (0.06) | 20.41 (0.04) | |||||||
| z magnitude | 21.78 (0.6) | 21.78 (0.6) | 20.44 (0.1) | |||||||
| G magnitude | 20.13 (0.08) | 20.19 | 20.19 (0.005) | |||||||
| BP magnitude | 20.17 (0.08) | 20.08 | ||||||||
| RP magnitude | 19.85 (0.1) | 19.91 | ||||||||
| Pan g magnitude | ||||||||||
| Pan r magnitude | ||||||||||
| Pan i magnitude | ||||||||||
| Pan z magnitude | ||||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.055 | |||||||||
* Constant surface field
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