(5496) 1973 NA, is a very eccentric and heavily tilted asteroid, classified as near-Earth object of the Apollo group, approximately 2 kilometers in diameter.
Its discovery happened just two days after it had passed 0.07984 AU (11,900,000 km) from Earth on one of its closest approaches ever computed.
[1] The stony S-type asteroid is also classified as a transitional C/X-type according to observations by the NASA IRTF telescope.
[4] A rotational lightcurve for this asteroid was obtained by American astronomer Brian Skiff from photometric observations made in June 2011.
Lightcurve analysis gave a well-defined rotation period of 2.855±0.001 hours with a brightness variation of 0.15 magnitude (U=3).