Discovery [1] | |
---|---|
Discovered by | LINEAR |
Discovery site | Lincoln Lab's ETS |
Discovery date | 1 February 2002 |
Designations | |
(89830) 2002 CE | |
2002 CE | |
Amor · NEO · PHA [1] [2] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 34.91 yr (12,752 days) |
Aphelion | 3.1314 AU |
Perihelion | 1.0234 AU |
2.0774 AU | |
Eccentricity | 0.5074 |
2.99 yr (1,094 days) | |
117.79 ° | |
0° 19m 45.12s / day | |
Inclination | 43.701° |
19.934° | |
5.7062° | |
Earth MOID | 0.0277 AU · 10.8 LD |
Physical characteristics | |
3.11 km (calculated)
[3] 5.067±2.155 km [4] | |
2.6149±0.0008 h [a] | |
0.079±0.075
[4] 0.20 (assumed) [3] | |
S [3] [5] | |
14.80±0.3 [4] · 14.9 [1] [2] [3] · 15.67±0.27 [6] | |
(89830) 2002 CE ( provisional designation 2002 CE), is a stony asteroid, classified as near-Earth object and potentially hazardous asteroid of the Amor group, approximately 3.1 kilometers in diameter. It was discovered on 1 February 2002, by astronomers of the LINEAR program at Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. [2] This asteroid is one of the largest potentially hazardous asteroid known to exist. [7]
2002 CE is a member of the dynamical Amor group, which are Mars-crossing asteroids that approach the orbit of Earth from beyond, but do not cross it. [1] [2]
It orbits the Sun at a distance of 1.0–3.1 AU once every 2 years and 12 months (1,094 days; semi-major axis of 2.08 AU). Its orbit has a high eccentricity of 0.51 and an inclination of 44 ° with respect to the ecliptic. [1]
The body's observation arc begins with a precovery from the Digitized Sky Survey taken at the Siding Spring Observatory, Australia, in May 1982, nearly 20 years prior to its official discovery observation at Socorro. [2]
With an absolute magnitude of 14.9, 2002 CE is one of the brightest and largest known potentially hazardous asteroid (see PHA-list). [7] It has an Earth minimum orbital intersection distance of 0.0277 AU (4,140,000 km), which corresponds to 10.8 lunar distances. [1]
2002 CE has been characterized as a common, stony S-type asteroid by astronomers conducting spectroscopic observations using the New Technology Telescope at La Silla, Chile, and the 2.2-meter telescope of the Calar Alto Observatory in Spain. [5]: 6
In October 2004, a rotational lightcurve of 2002 CE was obtained from photometric observations by Czech astronomer Petr Pravec at the Ondřejov Observatory. Lightcurve analysis gave a rotation period of 2.6149 hours with a low brightness amplitude of 0.09 magnitude ( U=2-). Several longer periods are also possible. [a]
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, 2002 CE measures 5.067 kilometers in diameter and its surface has a low albedo of 0.079. [4] Conversely, the Collaborative Asteroid Lightcurve Link assumes a stony standard albedo of 0.20 and calculates a smaller diameter of 3.11 kilometers based on an absolute magnitude of 14.9. [3]
This minor planet was numbered by the Minor Planet Center on 30 August 2004. [8] As of 2018, it has not been named. [2]
Discovery [1] | |
---|---|
Discovered by | LINEAR |
Discovery site | Lincoln Lab's ETS |
Discovery date | 1 February 2002 |
Designations | |
(89830) 2002 CE | |
2002 CE | |
Amor · NEO · PHA [1] [2] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 34.91 yr (12,752 days) |
Aphelion | 3.1314 AU |
Perihelion | 1.0234 AU |
2.0774 AU | |
Eccentricity | 0.5074 |
2.99 yr (1,094 days) | |
117.79 ° | |
0° 19m 45.12s / day | |
Inclination | 43.701° |
19.934° | |
5.7062° | |
Earth MOID | 0.0277 AU · 10.8 LD |
Physical characteristics | |
3.11 km (calculated)
[3] 5.067±2.155 km [4] | |
2.6149±0.0008 h [a] | |
0.079±0.075
[4] 0.20 (assumed) [3] | |
S [3] [5] | |
14.80±0.3 [4] · 14.9 [1] [2] [3] · 15.67±0.27 [6] | |
(89830) 2002 CE ( provisional designation 2002 CE), is a stony asteroid, classified as near-Earth object and potentially hazardous asteroid of the Amor group, approximately 3.1 kilometers in diameter. It was discovered on 1 February 2002, by astronomers of the LINEAR program at Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. [2] This asteroid is one of the largest potentially hazardous asteroid known to exist. [7]
2002 CE is a member of the dynamical Amor group, which are Mars-crossing asteroids that approach the orbit of Earth from beyond, but do not cross it. [1] [2]
It orbits the Sun at a distance of 1.0–3.1 AU once every 2 years and 12 months (1,094 days; semi-major axis of 2.08 AU). Its orbit has a high eccentricity of 0.51 and an inclination of 44 ° with respect to the ecliptic. [1]
The body's observation arc begins with a precovery from the Digitized Sky Survey taken at the Siding Spring Observatory, Australia, in May 1982, nearly 20 years prior to its official discovery observation at Socorro. [2]
With an absolute magnitude of 14.9, 2002 CE is one of the brightest and largest known potentially hazardous asteroid (see PHA-list). [7] It has an Earth minimum orbital intersection distance of 0.0277 AU (4,140,000 km), which corresponds to 10.8 lunar distances. [1]
2002 CE has been characterized as a common, stony S-type asteroid by astronomers conducting spectroscopic observations using the New Technology Telescope at La Silla, Chile, and the 2.2-meter telescope of the Calar Alto Observatory in Spain. [5]: 6
In October 2004, a rotational lightcurve of 2002 CE was obtained from photometric observations by Czech astronomer Petr Pravec at the Ondřejov Observatory. Lightcurve analysis gave a rotation period of 2.6149 hours with a low brightness amplitude of 0.09 magnitude ( U=2-). Several longer periods are also possible. [a]
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, 2002 CE measures 5.067 kilometers in diameter and its surface has a low albedo of 0.079. [4] Conversely, the Collaborative Asteroid Lightcurve Link assumes a stony standard albedo of 0.20 and calculates a smaller diameter of 3.11 kilometers based on an absolute magnitude of 14.9. [3]
This minor planet was numbered by the Minor Planet Center on 30 August 2004. [8] As of 2018, it has not been named. [2]