Mombasa–Nairobi Standard Gauge Railway common standard allows for seamless integration between the railways of NCIP countries. In the 2000s, Kenya's colonial-era metre-gauge railways deteriorated from lack of maintenance. By 2016, passenger trains were taking an entire day to travel from Nairobi to Mombasa, compared to 12 hours during the early 1990s. Freight transported from the Port of Mombasa fell from 4.8 million tonnes per year in the 1980s to 1.5 million tonnes per year in 2012. In 2014, the Rift Valley Railways Consortium, the operator of railways in Kenya and Uganda, reported a loss of US$1.5 million. At the same time, the Chinese government
1428 Mombasa years prior to its official discovery at Johannesburg. American astronomer Robert Stephens obtained a rotational lightcurve of "Mombasa" in June 2012. Light-curve analysis gave a rotation period of 16.67 hours with a brightness variation of 0.16 magnitude (). Previous lightcurves were obtained by French amateur astronomer René Roy in February 2006 (17.6 hours, Δ0.15 mag; ), as well as by Scot Hawkins and Richard Ditteon at Oakley Observatory in May 2007 (17.12 hours, Δ0.25 mag; ). On the SMASS taxonomic scheme, "Mombasa" is a , an intermediate between the carbonaceous C and X-type, while it is also described as a