Discovery [1] | |
---|---|
Discovered by | Y. Väisälä |
Discovery site | Turku Obs. |
Discovery date | 3 April 1940 |
Designations | |
(3099) Hergenrother | |
Named after |
Carl Hergenrother (American astronomer) [2] |
1940 GF · 1969 EF1 1972 VV · 1979 KE 1980 NT · 1984 HB 1984 JG | |
main-belt · ( outer) [3] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 76.96 yr (28,111 days) |
Aphelion | 3.4563 AU |
Perihelion | 2.3048 AU |
2.8805 AU | |
Eccentricity | 0.1999 |
4.89 yr (1,786 days) | |
309.42 ° | |
0° 12m 5.76s / day | |
Inclination | 15.496° |
31.100° | |
148.52° | |
Physical characteristics | |
Dimensions | 14.732±0.110 km
[4]
[5] 29.21 km (calculated) [3] |
24.266±0.007 h [6] | |
0.057 (assumed)
[3] 0.224±0.016 [4] [5] | |
C [3] | |
11.4 [1] [3] [4] | |
3099 Hergenrother, provisional designation 1940 GF, is an asteroid from the outer region of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 3 April 1940, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, [7] and named after American astronomer Carl Hergenrother in 1996. [2]
Hergenrother orbits the Sun in the outer main-belt at a distance of 2.3–3.5 AU once every 4 years and 11 months (1,786 days). Its orbit has an eccentricity of 0.20 and an inclination of 15 ° with respect to the ecliptic. [1] The body's observation arc begins 6 days after its official discovery observation at Turku. [7]
In January 2008, a rotational lightcurve of Hergenrother was obtained from photometric observations by French amateur astronomer Pierre Antonini. Lightcurve analysis gave a rotation period of 24.266 hours with a brightness variation of 0.28 magnitude ( U=2). [6]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Hergenrother measures 14.73 kilometers in diameter and its surface has an albedo of 0.224, [4] [5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and consequently calculates a diameter of 29.21 kilometers, as the lower the albedo, the larger the body's diameter at a certain absolute magnitude. [3]
This minor planet was named in honor of American astronomer Carl W. Hergenrother (born 1973). At Lunar and Planetary Laboratory, he has been a discoverer of minor planets with high inclinations during the Bigelow Sky Survey, precursor to the Catalina Sky Survey. The naming was proposed by MPC director Brian G. Marsden among others. [2] The official naming citation was published by the Minor Planet Center on 3 May 1996 ( M.P.C. 27124). [8]
Discovery [1] | |
---|---|
Discovered by | Y. Väisälä |
Discovery site | Turku Obs. |
Discovery date | 3 April 1940 |
Designations | |
(3099) Hergenrother | |
Named after |
Carl Hergenrother (American astronomer) [2] |
1940 GF · 1969 EF1 1972 VV · 1979 KE 1980 NT · 1984 HB 1984 JG | |
main-belt · ( outer) [3] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 76.96 yr (28,111 days) |
Aphelion | 3.4563 AU |
Perihelion | 2.3048 AU |
2.8805 AU | |
Eccentricity | 0.1999 |
4.89 yr (1,786 days) | |
309.42 ° | |
0° 12m 5.76s / day | |
Inclination | 15.496° |
31.100° | |
148.52° | |
Physical characteristics | |
Dimensions | 14.732±0.110 km
[4]
[5] 29.21 km (calculated) [3] |
24.266±0.007 h [6] | |
0.057 (assumed)
[3] 0.224±0.016 [4] [5] | |
C [3] | |
11.4 [1] [3] [4] | |
3099 Hergenrother, provisional designation 1940 GF, is an asteroid from the outer region of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 3 April 1940, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, [7] and named after American astronomer Carl Hergenrother in 1996. [2]
Hergenrother orbits the Sun in the outer main-belt at a distance of 2.3–3.5 AU once every 4 years and 11 months (1,786 days). Its orbit has an eccentricity of 0.20 and an inclination of 15 ° with respect to the ecliptic. [1] The body's observation arc begins 6 days after its official discovery observation at Turku. [7]
In January 2008, a rotational lightcurve of Hergenrother was obtained from photometric observations by French amateur astronomer Pierre Antonini. Lightcurve analysis gave a rotation period of 24.266 hours with a brightness variation of 0.28 magnitude ( U=2). [6]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Hergenrother measures 14.73 kilometers in diameter and its surface has an albedo of 0.224, [4] [5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and consequently calculates a diameter of 29.21 kilometers, as the lower the albedo, the larger the body's diameter at a certain absolute magnitude. [3]
This minor planet was named in honor of American astronomer Carl W. Hergenrother (born 1973). At Lunar and Planetary Laboratory, he has been a discoverer of minor planets with high inclinations during the Bigelow Sky Survey, precursor to the Catalina Sky Survey. The naming was proposed by MPC director Brian G. Marsden among others. [2] The official naming citation was published by the Minor Planet Center on 3 May 1996 ( M.P.C. 27124). [8]