The K-type binary star HD 102077 was proposed as a candidate member of the TW Hydrae Association ( TWA ) which is a young ( 5 - 15 Myr ) moving group in close proximity ( \sim 50 pc ) to the solar system .
The aim of this work is to verify this hypothesis by different means .
We first combine diffraction-limited observations from the ESO NTT 3.5 m telescope in SDSS-i ’ and SDSS-z ’ passbands ( three epochs ) and ESO 3.6 m telescope in H-band ( one epoch ) with literature data to obtain a new , amended orbit fit of the visual binary .
We then estimate the spectral types of both components from the i ’ -z ’ colours and reanalyse the Hipparcos parallax and proper motion taking the orbital motion into account .
Moreover , we use two high-resolution spectra of HD 102077 obtained with the fibre-fed optical echelle spectrograph FEROS at the MPG/ESO 2.2 m telescope to determine the radial velocity and the lithium equivalent width of the system .
Finally , we use all the information to discuss the kinematic properties of HD 102077 and to estimate the age of the system .

The orbital elements of the HD 102077 trajectory are well constrained and we derive a total system mass of 2.6 \pm 0.8 M _ { \sun } and a semi-major axis of { 14.9 \pm 1.6 } AU .
From the i ’ -z ’ colours we infer an integrated spectral type of K2V , and individual spectral types of K 0 \pm 1 and K 5 \pm 1 for primary and secondary , respectively .
The radial velocity corrected for the orbital motion of the system is 17.6 \pm 2 km/s .
Even though the parallax determination from the Hipparcos data is not influenced by the orbital motion , the proper motion changes to \mu _ { \alpha } * \cos { \delta } = -137.84 \pm 1.26 mas yr ^ { -1 } and \mu _ { \delta } = -33.53 \pm 1.45 mas yr ^ { -1 } .
With the resultant space motion , the probability of HD 102077 being a member of TWA is less than { 1 \% } .
Furthermore , the lithium equivalent width of 200 \pm 4 mÅ is consistent with an age between 30 Myr and 120 Myr and thus older than the predicted age of TWA .
The comparison of HD 102077 ’ s temperature and luminosity to isochrones supports this result .
In conclusion , HD 102077 ’ s age , galactic space motion , and position do not fit TWA or any other young moving group .