SDSS J162359.48+250346.9
All names: GALEX J162359.5+250346, SDSS J162359.47+250346.8, SDSS J162359.48+250346.8, Gaia DR2 1302556309773826432, SDSS J162359.48+250346.9, SDSS J162359.48+250346.90, Gaia DR3 1302556309773826432, Gaia EDR3 1302556309773826432
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | MWDD HE | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 23 59.48 (0.1) | 16 23 59.48 | 16 23 59.48 (0.2) | 16 23 59.48 (0.1) | 16 23 59.48 | ||||||
| Declination | 25 03 46.98 (0.2) | 25 03 46.94 | 25 03 46.98 (0.2) | 25 03 46.85 (0.2) | 25 03 46.88 | ||||||
| Spectral type | DB | DB | DB | DB+MS | |||||||
| Effective temperature | [K] | 19714.0 | 17484.0 | 13737.0 | 21320.0 (1263) | ||||||
| log(g) | [cgs] | 8.35 | 7.69 | 7.33 | 8.24 (0.1) | ||||||
| Mass | [M☉] | 0.812 | 0.437 | 0.295 | 0.739 (0.07) | ||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.1294 | |||||||||
| log(H/He) | <-4.962 | ||||||||||
| 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] | 2.18 (0.2) | 1.73 (0.4) | 2.18 (0.2) | |||||||
| Distance | [pc] | 458.31 (51) | 579.15 (117) | 458.32 (51) | |||||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 3.118264909 (0.2) | 3.609841695 (0.6) | 3.118 (0.2) | |||||||
| Proper motion (declination) | [mas/yr] | 8.061773334 (0.2) | 8.135745478 (0.6) | 8.062 (0.2) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | ||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 19.22 (0.02) | 19.22 (0.02) | 19.20 (0.03) | ||||||||
| g magnitude | 19.24 (0.01) | 19.24 (0.01) | 19.24 (0.02) | ||||||||
| r magnitude | 19.53 (0.01) | 19.53 (0.01) | 19.53 (0.02) | ||||||||
| i magnitude | 19.72 (0.02) | 19.72 (0.02) | 19.82 (0.03) | ||||||||
| z magnitude | 19.97 (0.09) | 19.97 (0.09) | 19.93 (0.1) | ||||||||
| G magnitude | 19.43 (0.03) | 19.49 | 19.43 (0.004) | ||||||||
| BP magnitude | 19.39 (0.03) | 19.32 | |||||||||
| RP magnitude | 19.56 (0.04) | 19.33 | |||||||||
| Pan g magnitude | |||||||||||
| Pan r magnitude | |||||||||||
| Pan i magnitude | |||||||||||
| Pan z magnitude | |||||||||||
| Pan y magnitude | |||||||||||
| E(B-V) | 0.042 | ||||||||||
* Constant surface field
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