Discovery [1] | |
---|---|
Discovered by | N. Chernykh |
Discovery site | Crimean Astrophysical Obs. |
Discovery date | 1 April 1976 |
Designations | |
(2606) Odessa | |
Named after | Odesa [2] (city in Ukraine) |
1976 GX2 · 1955 VE | |
main-belt
[1]
[3] · (
middle) background [4] | |
Orbital characteristics [3] | |
Epoch 23 March 2018 ( JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 62.91 yr (22,979 d) |
Aphelion | 3.4893 AU |
Perihelion | 2.0286 AU |
2.7589 AU | |
Eccentricity | 0.2647 |
4.58 yr (1,674 d) | |
50.837 ° | |
0° 12m 54.36s / day | |
Inclination | 12.452° |
197.31° | |
353.17° | |
Physical characteristics | |
Mean diameter | 15.910±0.231
km
[5]
[6] 25.44 km (calculated) [7] |
8.2426±0.0003
h
[8] 8.244±0.002 h [9] 8.2444 h [10] | |
0.057 (assumed)
[7] 0.1753±0.0296 [5] [6] | |
SMASS =
X
k
[3] X [11] · M [6] | |
11.5
[6] · 11.57±0.21
[11] 11.7 [3] [7] | |
2606 Odessa, provisional designation 1976 GX2, is a background asteroid from the central regions of the asteroid belt, approximately 16 kilometers (10 miles) in diameter. It was discovered on 1 April 1976, by Soviet–Russian astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. [1] The presumably metallic X- or M-type asteroid has an elongated shape and a rotation period of 8.24 hours. [7] It was named for the Ukrainian city of Odesa. [2]
Odessa is a non- family asteroid from the main belt's background population. [4] It orbits the Sun in the intermediate asteroid belt at a distance of 2.0–3.5 AU once every 4 years and 7 months (1,674 days; semi-major axis of 2.76 AU). Its orbit has an eccentricity of 0.26 and an inclination of 12 ° with respect to the ecliptic. [3]
The body's observation arc begins with a precovery taken at Palomar Observatory in July 1954, near 22 years prior to its official discovery observation at Nauchnij. [1]
In the SMASS classification, Odessa is a Xk-subtype that transitions between the X- and K-type asteroids. [3] It has also been characterized as an X-type by Pan-STARRS photometric survey, [11] while it as an M-type asteroid according to the Wide-field Infrared Survey Explorer (WISE). [6]
In 2008, two rotational lightcurves of Odessa were obtained from photometric observations at the Hunters Hill and Oakley Southern Sky observatories in Australia. Lightcurve analysis gave a well-defined rotation period of 8.2426 and 8.244 hours with a brightness amplitude of 0.80 and 0.72 magnitude, respectively, indicative for a non-spherical shape ( U=3/3). [8] [9]
In 2016, a modeled lightcurve gave a concurring sidereal period of 8.2444 hours using data from the Uppsala Asteroid Photometric Catalogue, the Palomar Transient Factory survey, and individual observers (such as above), as well as sparse-in-time photometry from the NOFS, the Catalina Sky Survey, and the La Palma surveys ( 950). The study also determined two spin axes of (25.0°, −81.0°) and (283.0°, −88.0°) in ecliptic coordinates (λ, β). [10]
According to the survey carried out by the NEOWISE mission of NASA's WISE telescope, Odessa measures 15.91 kilometers in diameter and its surface has an albedo of 0.175, [5] [6] while the Collaborative Asteroid Lightcurve Link assumes a carbonaceous standard albedo of 0.057 and consequently calculates a larger diameter of 25.44 kilometers based on an absolute magnitude of 11.7. [7]
This minor planet was named after the Ukrainian black Sea port city of Odesa. [2] The official naming citation was published by the Minor Planet Center on 1 December 1982 ( M.P.C. 7472). [12]
Discovery [1] | |
---|---|
Discovered by | N. Chernykh |
Discovery site | Crimean Astrophysical Obs. |
Discovery date | 1 April 1976 |
Designations | |
(2606) Odessa | |
Named after | Odesa [2] (city in Ukraine) |
1976 GX2 · 1955 VE | |
main-belt
[1]
[3] · (
middle) background [4] | |
Orbital characteristics [3] | |
Epoch 23 March 2018 ( JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 62.91 yr (22,979 d) |
Aphelion | 3.4893 AU |
Perihelion | 2.0286 AU |
2.7589 AU | |
Eccentricity | 0.2647 |
4.58 yr (1,674 d) | |
50.837 ° | |
0° 12m 54.36s / day | |
Inclination | 12.452° |
197.31° | |
353.17° | |
Physical characteristics | |
Mean diameter | 15.910±0.231
km
[5]
[6] 25.44 km (calculated) [7] |
8.2426±0.0003
h
[8] 8.244±0.002 h [9] 8.2444 h [10] | |
0.057 (assumed)
[7] 0.1753±0.0296 [5] [6] | |
SMASS =
X
k
[3] X [11] · M [6] | |
11.5
[6] · 11.57±0.21
[11] 11.7 [3] [7] | |
2606 Odessa, provisional designation 1976 GX2, is a background asteroid from the central regions of the asteroid belt, approximately 16 kilometers (10 miles) in diameter. It was discovered on 1 April 1976, by Soviet–Russian astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. [1] The presumably metallic X- or M-type asteroid has an elongated shape and a rotation period of 8.24 hours. [7] It was named for the Ukrainian city of Odesa. [2]
Odessa is a non- family asteroid from the main belt's background population. [4] It orbits the Sun in the intermediate asteroid belt at a distance of 2.0–3.5 AU once every 4 years and 7 months (1,674 days; semi-major axis of 2.76 AU). Its orbit has an eccentricity of 0.26 and an inclination of 12 ° with respect to the ecliptic. [3]
The body's observation arc begins with a precovery taken at Palomar Observatory in July 1954, near 22 years prior to its official discovery observation at Nauchnij. [1]
In the SMASS classification, Odessa is a Xk-subtype that transitions between the X- and K-type asteroids. [3] It has also been characterized as an X-type by Pan-STARRS photometric survey, [11] while it as an M-type asteroid according to the Wide-field Infrared Survey Explorer (WISE). [6]
In 2008, two rotational lightcurves of Odessa were obtained from photometric observations at the Hunters Hill and Oakley Southern Sky observatories in Australia. Lightcurve analysis gave a well-defined rotation period of 8.2426 and 8.244 hours with a brightness amplitude of 0.80 and 0.72 magnitude, respectively, indicative for a non-spherical shape ( U=3/3). [8] [9]
In 2016, a modeled lightcurve gave a concurring sidereal period of 8.2444 hours using data from the Uppsala Asteroid Photometric Catalogue, the Palomar Transient Factory survey, and individual observers (such as above), as well as sparse-in-time photometry from the NOFS, the Catalina Sky Survey, and the La Palma surveys ( 950). The study also determined two spin axes of (25.0°, −81.0°) and (283.0°, −88.0°) in ecliptic coordinates (λ, β). [10]
According to the survey carried out by the NEOWISE mission of NASA's WISE telescope, Odessa measures 15.91 kilometers in diameter and its surface has an albedo of 0.175, [5] [6] while the Collaborative Asteroid Lightcurve Link assumes a carbonaceous standard albedo of 0.057 and consequently calculates a larger diameter of 25.44 kilometers based on an absolute magnitude of 11.7. [7]
This minor planet was named after the Ukrainian black Sea port city of Odesa. [2] The official naming citation was published by the Minor Planet Center on 1 December 1982 ( M.P.C. 7472). [12]