Other names: WD 1640+457, LB 953
| Parameter | Unit | Gianninas et al. 2011 | SDSS DR12 | Simbad | |
|---|---|---|---|---|---|
| Right ascension | 16 41 42.24 | 16 41 42.24 | |||
| Declination | 45 40 04.76 | 45 40 04.69 | |||
| Spectral type | DA | ||||
| Effective temperature | [K] | 19800 | |||
| log(g) | [cgs] | 7.90 | |||
| Mass | [M☉] | 0.57 | |||
| log(Luminosity) | [L☉] | ||||
| Age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| 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(Ca/H) | |||||
| log(Sc/H) | |||||
| log(Ti/H) | |||||
| log(Cr/H) | |||||
| log(Mn/H) | |||||
| log(Fe/H) | |||||
| log(Ni/H) | |||||
| Parallax | [mas] | ||||
| Distance | [pc] | 136.00 | |||
| Composition | H | ||||
| Proper motion (right ascension) | [mas/yr] | -18.0 | |||
| Proper motion (declination) | [mas/yr] | 23.0 | |||
| Variability | |||||
| Magnetic | |||||
| Has a disc | |||||
| B magnitude | 16.14 | ||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 16.25 | 16.23 | |||
| g magnitude | 16.15 | 16.14 | |||
| r magnitude | 16.53 | 16.51 | |||
| i magnitude | 16.82 | 16.80 | |||
| z magnitude | 17.13 | 17.12 | |||