  AIMS We plan to identify the members of the Bochum7 association by performing
simultaneous astrometric and spectrophotometric analyses, and estimate its
distance and evolutionary stage. METHODS. We used our own visual spectroscopic
and UBV photometric data of a 30' x 30' region centered at R.A. = 8h44m47.2s,
Decl = - 45d58m55.5s. This information enabled us to estimate the spectral
classification and distance of all stars present in the region. The proper
motion was analyzed with data of the UCAC5 catalog and was used to identify the
members of this association. We added JHK data from 2MASS and IRAS catalogs to
check for the presence of infrared (IR) excess stars. RESULTS. We found that
Bochum7 is an OB association with at least 27 identified stellar members (l =
265.12d, b = -2.0d) at a distance of 5640 pc. Its proper motion is
mu(alfa)cos(delta) = -4.92+-0.08 mas/yr, mu(delta) = 3.26+-0.08 mas/yr. We
derived an average heliocentric radial velocity of 35 km/s and were able to
confirm the binary nature of the (ALS 1135) system and detect four new binary
star candidates. Analysis of data for massive Bo 7 star candidates points
towards a young age (< 3x10^6 years old) for the association, although the
presence of a previous episode of star formation remains to be analyzed.
