Gaia DR2 670842761712806912
All names: SDSS J080009.94+205255.2, SDSS J080009.93+205255.2, WDJ080009.96+205255.25, WDJ08009.96+205255.25, J0800+2052, SDSS J080009.89+205255.1, Gaia DR3 670842761712806912, Gaia EDR3 670842761712806912, Gaia DR2 670842761712806912, GALEX J080009.8+205254
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 00 09.85 (0.2) | 08 00 09.85 | 08 00 09.85 | 08 00 09.96 (0.2) | 08 00 09.85 | ||||||||
| Declination | 20 52 55.08 (0.1) | 20 52 55.08 | 20 52 55.08 | 20 52 55.24 (0.1) | 20 52 55.08 | ||||||||
| Spectral type | DC | DC | DC | DC | DC | ||||||||
| Effective temperature | [K] | 7559.0 (80) | 7521.0 (77) | 8148.0 | 7826.0 | 7648.0 (270) | |||||||
| log(g) | [cgs] | 8.26 (0.02) | 8.27 (0.03) | 8.49 | 8.40 | 8.31 (0.05) | |||||||
| Mass | [M☉] | 0.74 (0.02) | 0.744 (0.03) | 0.911 | 0.837 | 0.774 (0.05) | |||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 2.1700 | 2.6270 | 2.5410 | |||||||||
| log(H/He) | -3.6 | -3.6 | |||||||||||
| 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] | 10.75 (0.2) | 10.78 (0.3) | 10.78 (0.3) | 10.75 | 10.75 (0.2) | 10.78 (0.3) | ||||||
| Distance | [pc] | 93.05 (2) | 92.76 (2) | 92.75 (2) | 93.05 | 93.05 (2) | 92.75 (2) | ||||||
| Composition | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -92.66600721 (0.2) | -91.16286839 (0.5) | -92.666 (0.2) | -91.16286839 | ||||||||
| Proper motion (declination) | [mas/yr] | -10.40379475 (0.1) | -11.10900489 (0.2) | -10.404 (0.1) | -11.10900489 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 18.21 (0.04) | 18.12 (0.04) | |||||||||||
| H magnitude | 18.04 (0.09) | 18.03 (0.07) | |||||||||||
| K magnitude | 18.12 (0.1) | 18.10 (0.1) | |||||||||||
| u magnitude | 19.02 (0.02) | 18.94 (0.02) | 18.97 (0.02) | ||||||||||
| g magnitude | 18.61 (0.008) | 18.57 (0.008) | |||||||||||
| r magnitude | 18.51 (0.008) | 18.55 (0.009) | |||||||||||
| i magnitude | 18.55 (0.01) | 18.57 (0.01) | |||||||||||
| z magnitude | 18.71 (0.03) | 18.71 (0.04) | |||||||||||
| G magnitude | 18.49 (0.02) | 18.51 | 18.49 | 18.49 (0.003) | 18.51 | ||||||||
| BP magnitude | 18.60 (0.02) | 18.58 | 18.58 | ||||||||||
| RP magnitude | 18.26 (0.03) | 18.24 | 18.24 | ||||||||||
| Pan g magnitude | 18.59 (0.009) | 18.59 (0.008) | |||||||||||
| Pan r magnitude | 18.53 (0.005) | 18.53 (0.004) | |||||||||||
| Pan i magnitude | 18.57 (0.008) | 18.57 (0.008) | |||||||||||
| Pan z magnitude | 18.67 (0.008) | 18.67 (0.01) | |||||||||||
| Pan y magnitude | 18.74 (0.02) | 18.74 (0.02) | |||||||||||
| E(B-V) | 0.003 | ||||||||||||
* Constant surface field
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