V842 Centauri [SEP] constellation
V842 Centauri
V842 Centauri was a nova which occurred in 1986 in the constellation Centaurus and which reached a brightness of 4.6 mag. It is considered a moderately fast nova, having faded by 3 magnitudes after 48 days. In 2010, it had faded to magnitude 16.5, but was still 2 magnitudes brighter than before the nova eruption. From its shell's expansion velocity, it is estimated to be at a distance of 1.5 kpc (4900 light-years) from Earth. Another method, based on the system's extinction
rate, gives a similar distance of 1.65 ± 0.54 kpc.
The mass of the white dwarf in V842 Centauri is estimated at 0.88 solar masses. The system is likely seem from a low inclination. An expanding nebula has been detected around V842 Centauri, formed by material ejected during the nova. It has two components, with diameters of 3.6" and 10.6", corresponding to material with different densities and expansion velocities. 
A 2009 photometric study of V842 Centauri found a possible 57 seconds period in the system's light