GD 268
All names: PSO J130728.606+144417.073, SDSS J130728.66+144417.5, GD 268, Gaia DR2 3936166827603854208, SDSS J130728.60+144417.0, SDSS J130728.60+144417.05, Gaia DR2 76913488358361472
| Parameter | Unit | MWDD HE | Pan-STARRS DR1 | Gaia DR2 | Gaia DR2 | Koester & Kepler (2015) | Kepler et al. 2015 | SDSS DR10 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 13 07 28.57 (0.1) | 13 07 28.57 (0.1) | 13 07 28.67 | 13 07 28.67 | |||||
| Declination | 14 44 16.91 (0.09) | 14 44 16.91 (0.09) | 14 44 17.54 | 14 44 17.53 | |||||
| Spectral type | DBA | DBA | DBA | ||||||
| Effective temperature | [K] | 13707.0 | 14756.0 (30) | 15069.0 (48) | |||||
| log(g) | [cgs] | 7.97 | 8.00 (0) | 8.20 (0.04) | |||||
| Mass | [M☉] | 0.568 | 0.743 (0.02) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | 0.2485 | |||||||
| log(H/He) | -4.79 (0.1) | ||||||||
| log(C/He) | |||||||||
| log(Ca/He) | -8.42 (0) | ||||||||
| 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] | 7.75 (0.1) | 7.75 (0.1) | ||||||
| Distance | [pc] | 129.09 (2) | 129.09 (2) | 134.00 | |||||
| Composition | He | ||||||||
| Proper motion (right ascension) | [mas/yr] | -119.6105475 (0.3) | -119.611 (0.3) | -116.0 | |||||
| Proper motion (declination) | [mas/yr] | -52.89525973 (0.2) | -52.895 (0.2) | -54.0 | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 16.60 | ||||||||
| V magnitude | 17.06 | ||||||||
| R magnitude | 17.00 | ||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 16.79 (0.03) | 16.78 (0.007) | 16.78 | ||||||
| g magnitude | 16.85 (0.02) | 16.84 (0.004) | 16.84 | ||||||
| r magnitude | 17.14 (0.02) | 17.13 (0.005) | 17.13 | ||||||
| i magnitude | 17.36 (0.02) | 17.34 (0.006) | 17.34 | ||||||
| z magnitude | 17.58 (0.03) | 17.56 (0.02) | 17.56 | ||||||
| G magnitude | 17.00 | 17.00 | |||||||
| BP magnitude | 16.91 | 16.91 | |||||||
| RP magnitude | 17.05 | 17.05 | |||||||
| Pan g magnitude | 16.89 (0.004) | ||||||||
| Pan r magnitude | 17.13 (0.005) | ||||||||
| Pan i magnitude | 17.38 (0.003) | ||||||||
| Pan z magnitude | 17.59 (0.009) | ||||||||
| Pan y magnitude | 17.72 (0.01) | ||||||||
* Constant surface field
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