  We report the independent discovery and characterisation of a hot Jupiter in
a 4.5-d, transiting orbit around the star TYC 7282-1298-1 ($V$ = 10.8, F5V).
The planet has been pursued by the NGTS team as NGTS-2b and by ourselves as
WASP-179b. We characterised the system using a combination of photometry from
WASP-South and TRAPPIST-South, and spectra from CORALIE (around the orbit) and
HARPS (through the transit). We find the planet's orbit to be nearly aligned
with its star's spin. From a detection of the Rossiter-McLaughlin effect, we
measure a projected stellar obliquity of $\lambda = -19 \pm 6^\circ$. From
line-profile tomography of the same spectra, we measure $\lambda = -11 \pm
5^\circ$. We find the planet to have a low density ($M_{\rm P}$ = 0.67 $\pm$
0.09 $M_{\rm Jup}$, $R_{\rm P}$ = 1.54 $\pm$ 0.06 $R_{\rm Jup}$), which, along
with its moderately bright host star, makes it a good target for transmission
spectroscopy. We find a lower stellar mass ($M_*$ = $1.30 \pm 0.07$ $M_\odot$)
than reported by the NGTS team ($M_*$ = $1.64 \pm 0.21$ $M_\odot$), though the
difference is only $1.5$ $\sigma$.
