Discovery [1] | |
---|---|
Discovered by | R. H. McNaught |
Discovery site | Siding Spring Obs. |
Discovery date | 7 May 1991 |
Designations | |
(5380) Sprigg | |
Named after |
Reg Sprigg (Australian geologist) [2] |
1991 JT · 1983 JN 1983 LA1 | |
main-belt · (
middle)
[3] background | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 35.92 yr (13,118 days) |
Aphelion | 3.1229 AU |
Perihelion | 2.0357 AU |
2.5793 AU | |
Eccentricity | 0.2108 |
4.14 yr (1,513 days) | |
102.71 ° | |
0° 14m 16.44s / day | |
Inclination | 9.3019° |
242.31° | |
358.90° | |
Physical characteristics | |
Dimensions | 6.606±0.290 km
[4]
[5] 12.75 km (calculated) [3] |
3.219±0.002 h [6] | |
0.057 (assumed)
[3] 0.280±0.025 [4] [5] | |
X [7] · C [3] | |
12.9 [4] · 13.03±0.32 [7] · 13.2 [1] [3] | |
5380 Sprigg, provisional designation 1991 JT, is a background asteroid from the middle regions of the asteroid belt, approximately 7 kilometers (4.3 miles) in diameter. It was discovered on 7 May 1991, by Australian astronomer Robert McNaught at Siding Spring Observatory in New South Wales, Australia. [8] It was named after Australian geologist Reg Sprigg. [2]
Sprigg is a non- family asteroid from the main belt's background population. It orbits the Sun in the central asteroid belt at a distance of 2.0–3.1 AU once every 4 years and 2 months (1,513 days). Its orbit has an eccentricity of 0.21 and an inclination of 9 ° with respect to the ecliptic. [1] A first precovery was taken at Palomar Observatory in 1980, extending the body's observation arc by 11 years prior to its official discovery observation at Siding Spring. [8]
This minor planet was named after Reg Sprigg (1919–1994), Australian exploration geologist, oceanographer, biologist, author and conservationist. In 1946, he discovered the pre-Cambrian Ediacara biota, an assemblage of some of the most ancient animal fossils known. He is also the founder of the Arkaroola Wilderness Sanctuary which also hosts a small observatory. The naming was proposed by astronomer Duncan Steel. [2] Naming citation was prepared by the Sprigg family and published on 11 April 1998 ( M.P.C. 31609). [9]
Sprigg has been classified as an X-type asteroid by Pan-STARRS photometric survey. [7]
A rotational lightcurve of Sprigg was obtained from photometric observations by astronomer Maurice Clark at Texas Tech University in October 2013. Lightcurve analysis gave a rotation period of 3.219 hours with a brightness amplitude of 0.68 magnitude, indicating that the body has a non-spheroidal shape ( U=3-). [6]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Sprigg measures 6.606 kilometers in diameter and its surface has an albedo of 0.280, [4] [5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a larger diameter of 12.75 kilometers with an absolute magnitude of 13.2. [3]
Discovery [1] | |
---|---|
Discovered by | R. H. McNaught |
Discovery site | Siding Spring Obs. |
Discovery date | 7 May 1991 |
Designations | |
(5380) Sprigg | |
Named after |
Reg Sprigg (Australian geologist) [2] |
1991 JT · 1983 JN 1983 LA1 | |
main-belt · (
middle)
[3] background | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 35.92 yr (13,118 days) |
Aphelion | 3.1229 AU |
Perihelion | 2.0357 AU |
2.5793 AU | |
Eccentricity | 0.2108 |
4.14 yr (1,513 days) | |
102.71 ° | |
0° 14m 16.44s / day | |
Inclination | 9.3019° |
242.31° | |
358.90° | |
Physical characteristics | |
Dimensions | 6.606±0.290 km
[4]
[5] 12.75 km (calculated) [3] |
3.219±0.002 h [6] | |
0.057 (assumed)
[3] 0.280±0.025 [4] [5] | |
X [7] · C [3] | |
12.9 [4] · 13.03±0.32 [7] · 13.2 [1] [3] | |
5380 Sprigg, provisional designation 1991 JT, is a background asteroid from the middle regions of the asteroid belt, approximately 7 kilometers (4.3 miles) in diameter. It was discovered on 7 May 1991, by Australian astronomer Robert McNaught at Siding Spring Observatory in New South Wales, Australia. [8] It was named after Australian geologist Reg Sprigg. [2]
Sprigg is a non- family asteroid from the main belt's background population. It orbits the Sun in the central asteroid belt at a distance of 2.0–3.1 AU once every 4 years and 2 months (1,513 days). Its orbit has an eccentricity of 0.21 and an inclination of 9 ° with respect to the ecliptic. [1] A first precovery was taken at Palomar Observatory in 1980, extending the body's observation arc by 11 years prior to its official discovery observation at Siding Spring. [8]
This minor planet was named after Reg Sprigg (1919–1994), Australian exploration geologist, oceanographer, biologist, author and conservationist. In 1946, he discovered the pre-Cambrian Ediacara biota, an assemblage of some of the most ancient animal fossils known. He is also the founder of the Arkaroola Wilderness Sanctuary which also hosts a small observatory. The naming was proposed by astronomer Duncan Steel. [2] Naming citation was prepared by the Sprigg family and published on 11 April 1998 ( M.P.C. 31609). [9]
Sprigg has been classified as an X-type asteroid by Pan-STARRS photometric survey. [7]
A rotational lightcurve of Sprigg was obtained from photometric observations by astronomer Maurice Clark at Texas Tech University in October 2013. Lightcurve analysis gave a rotation period of 3.219 hours with a brightness amplitude of 0.68 magnitude, indicating that the body has a non-spheroidal shape ( U=3-). [6]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Sprigg measures 6.606 kilometers in diameter and its surface has an albedo of 0.280, [4] [5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a larger diameter of 12.75 kilometers with an absolute magnitude of 13.2. [3]