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4587 Rees
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4587 Rees
4587 Rees, provisional designation 3239 T-2, is a Mars-crosser and former near-Earth object on an eccentric orbit from the asteroid belt, approximately 2 kilometers (1.2 miles) in diameter. It was discovered during the second Palomar–Leiden Trojan survey on 30 September 1973, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at the Palomar Observatory in California. The assumed S-type asteroid has a rotation period of 7.9 hours and is likely elongated in shape. It was named after British astrophysicist Martin Rees.
Rees is a Mars-crossing asteroid, a dynamically unstable group between the main belt and the near-Earth populations, crossing the orbit of Mars at 1.66 AU. It orbits the Sun at a distance of 1.31–4.01 AU once every 4 years and 4 months (1,583 days; semi-major axis of 2.66 AU). Its orbit has a high eccentricity of 0.51 and an inclination of 25° with respect to the ecliptic. The body's observation arc begins with its first observation as 6378 P-L at Palomar in September 1960, or 13 years prior to its official discovery observation.
Before 2014, Rees has been a near-Earth object of the Amor group, as its perihelion was slightly less than 1.3 AU due to the body's osculating orbit.
In July 2072, Rees will pass 20,686,000 km (0.13828 AU) from Mars, the closest since it passed 15,810,000 km (0.1057 AU) from the Red Planet on 28 January 1843. The asteroid will also pass 7,110,000 km (0.0475 AU) from the second largest asteroid, 4 Vesta, on 30 January 2121.
The survey designation "T-2" stands for the second Palomar–Leiden Trojan survey, named after the fruitful collaboration of the Palomar and Leiden Observatory in the 1960s and 1970s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with the discovery of several thousand asteroid discoveries.
This minor planet was named after Martin Rees (born 1942), a much awarded English cosmologist and astrophysicist who has studied the galactic evolution. Rees became Astronomer Royal and President of the Royal Society in 1995 and 2005, respectively. He is also the director of the Institute of Astronomy and a professor of astronomy at the University of Cambridge. The asteroid's name was proposed by Jan Oort, and the official citation was published by the Minor Planet Center on 28 April 1991 (M.P.C. 18143).
Asteroid 4587 is mentioned in Arthur C. Clarke's 1975 (so not then yet named Rees) novel Imperial Earth as the site of a black hole factory where the singularity used in the Asymptotic Drive to power the spaceship Sirius featured in the book is manufactured.
Rees is an assumed, stony S-type asteroid. Other sources published by EARN assume an Sr-subtype that transitions from the S-type to the rare R-type asteroids.
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4587 Rees
4587 Rees, provisional designation 3239 T-2, is a Mars-crosser and former near-Earth object on an eccentric orbit from the asteroid belt, approximately 2 kilometers (1.2 miles) in diameter. It was discovered during the second Palomar–Leiden Trojan survey on 30 September 1973, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at the Palomar Observatory in California. The assumed S-type asteroid has a rotation period of 7.9 hours and is likely elongated in shape. It was named after British astrophysicist Martin Rees.
Rees is a Mars-crossing asteroid, a dynamically unstable group between the main belt and the near-Earth populations, crossing the orbit of Mars at 1.66 AU. It orbits the Sun at a distance of 1.31–4.01 AU once every 4 years and 4 months (1,583 days; semi-major axis of 2.66 AU). Its orbit has a high eccentricity of 0.51 and an inclination of 25° with respect to the ecliptic. The body's observation arc begins with its first observation as 6378 P-L at Palomar in September 1960, or 13 years prior to its official discovery observation.
Before 2014, Rees has been a near-Earth object of the Amor group, as its perihelion was slightly less than 1.3 AU due to the body's osculating orbit.
In July 2072, Rees will pass 20,686,000 km (0.13828 AU) from Mars, the closest since it passed 15,810,000 km (0.1057 AU) from the Red Planet on 28 January 1843. The asteroid will also pass 7,110,000 km (0.0475 AU) from the second largest asteroid, 4 Vesta, on 30 January 2121.
The survey designation "T-2" stands for the second Palomar–Leiden Trojan survey, named after the fruitful collaboration of the Palomar and Leiden Observatory in the 1960s and 1970s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with the discovery of several thousand asteroid discoveries.
This minor planet was named after Martin Rees (born 1942), a much awarded English cosmologist and astrophysicist who has studied the galactic evolution. Rees became Astronomer Royal and President of the Royal Society in 1995 and 2005, respectively. He is also the director of the Institute of Astronomy and a professor of astronomy at the University of Cambridge. The asteroid's name was proposed by Jan Oort, and the official citation was published by the Minor Planet Center on 28 April 1991 (M.P.C. 18143).
Asteroid 4587 is mentioned in Arthur C. Clarke's 1975 (so not then yet named Rees) novel Imperial Earth as the site of a black hole factory where the singularity used in the Asymptotic Drive to power the spaceship Sirius featured in the book is manufactured.
Rees is an assumed, stony S-type asteroid. Other sources published by EARN assume an Sr-subtype that transitions from the S-type to the rare R-type asteroids.