4587 Rees is an Amor asteroid discovered on September 30, 1973 at the Palomar Observatory by Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels. The Provisional designation given to 4587 Rees was 3239 T-2. It has a rotation period of 7.7886 hours. 4587 Rees was named in honor of Martin Rees. Naming it after Professor Lord Rees was proposed by Jan Hendrik Oort.
On 2072-Jul-03 Rees will pass 0.13828 AU (20,686,000 km; 12,854,000 mi) from Mars, the closest since it passed 0.1057 AU (15,810,000 km; 9,830,000 mi) from Mars on 1843-Jan-28. On 2121-Jan-30, Rees will pass 0.0475 AU (7,110,000 km; 4,420,000 mi) from 4 Vesta.
Read more about 4587 Rees: NEO Status