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Lightcurve-based 3D-model of Istria | |
Discovery [1] | |
---|---|
Discovered by | J. Palisa |
Discovery site | Austrian Naval Obs. |
Discovery date | 8 February 1878 |
Designations | |
(183) Istria | |
Pronunciation | /ˈɪstriə/ [2] |
Named after |
Istrian Peninsula
[3] (in the Adriatic Sea) |
A878 CD; 1948 CG | |
main-belt
[1]
[4] · (
middle) background [5] [6] | |
Orbital characteristics [4] | |
Epoch 23 March 2018 ( JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 112.08 yr (40,937 d) |
Aphelion | 3.7699 AU |
Perihelion | 1.8117 AU |
2.7908 AU | |
Eccentricity | 0.3508 |
4.66 yr (1,703 d) | |
61.603 ° | |
0° 12m 41.04s / day | |
Inclination | 26.391° |
141.95° | |
264.12° | |
Physical characteristics | |
30.779±0.278
km
[7] 32.927±0.168 km [8] 34.55±0.84 km [9] 35.43±2.8 km [10] | |
11.6±0.5
h
[11] 11.77 h [12] | |
0.1890±0.034
[10] 0.201±0.012 [9] 0.227±0.038 [8] 0.2582±0.0384 [7] | |
Tholen =
S
[4] SMASS = S [4] [13] S [14] [15] B–V = 0.842 [4] U–B = 0.359 [4] | |
9.56±0.45
[15] 9.66 [12] 9.68 [4] [13] [7] [9] [10] | |
Istria ( minor planet designation: 183 Istria) is a stony background asteroid from the central regions of the asteroid belt, approximately 33 kilometers (21 miles) in diameter. It was discovered on 8 February 1878, by Austrian astronomer Johann Palisa at the Austrian Naval Observatory in Pola, in what is now Croatia. [1] The S-type asteroid has a rotation period of 11.77 hours. [13] It was named for the Istrian Peninsula. [3]
Istria is a non- family asteroid from the main belt's background population. [5] [6] It orbits the Sun in the central main-belt at a distance of 1.8–3.8 AU once every 4 years and 8 months (1,703 days; semi-major axis of 2.79 AU). Its orbit has an eccentricity of 0.35 and an inclination of 26 ° with respect to the ecliptic. [4]
Istria has been characterized as a common, stony S-type asteroid in both the Tholen and SMASS classification. [4]
In August 1979, a rotational lightcurve of Istria was obtained from photometric observations by American astronomer Alain Harris. Lightcurve analysis gave a well-defined rotation period of 11.77 hours with a brightness amplitude of 0.31 magnitude ( U=3). [12] Observations by French amateur astronomer Laurent Bernasconi gave a similar period of 11.6 hours ( U=2). [11]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Istria measures between 30.779 and 35.43 kilometers in diameter and its surface has an albedo between 0.1890 and 0.2582. [7] [8] [9] [10]
This minor planet was named after the Istrian Peninsula in the Adriatic Sea, where the city of Pula (then Pola) with its discovering observatory is located. A the time the peninsula was part of the Austro-Hungarian Empire. The asteroid's name was given by Vice-Admiral Bernhard von Wüllerstorf-Urbair, who is known as the captain of the first Austrian circumnavigatory adventure with the sail frigate SMS Novara. [3] The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 183). [3]
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Lightcurve-based 3D-model of Istria | |
Discovery [1] | |
---|---|
Discovered by | J. Palisa |
Discovery site | Austrian Naval Obs. |
Discovery date | 8 February 1878 |
Designations | |
(183) Istria | |
Pronunciation | /ˈɪstriə/ [2] |
Named after |
Istrian Peninsula
[3] (in the Adriatic Sea) |
A878 CD; 1948 CG | |
main-belt
[1]
[4] · (
middle) background [5] [6] | |
Orbital characteristics [4] | |
Epoch 23 March 2018 ( JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 112.08 yr (40,937 d) |
Aphelion | 3.7699 AU |
Perihelion | 1.8117 AU |
2.7908 AU | |
Eccentricity | 0.3508 |
4.66 yr (1,703 d) | |
61.603 ° | |
0° 12m 41.04s / day | |
Inclination | 26.391° |
141.95° | |
264.12° | |
Physical characteristics | |
30.779±0.278
km
[7] 32.927±0.168 km [8] 34.55±0.84 km [9] 35.43±2.8 km [10] | |
11.6±0.5
h
[11] 11.77 h [12] | |
0.1890±0.034
[10] 0.201±0.012 [9] 0.227±0.038 [8] 0.2582±0.0384 [7] | |
Tholen =
S
[4] SMASS = S [4] [13] S [14] [15] B–V = 0.842 [4] U–B = 0.359 [4] | |
9.56±0.45
[15] 9.66 [12] 9.68 [4] [13] [7] [9] [10] | |
Istria ( minor planet designation: 183 Istria) is a stony background asteroid from the central regions of the asteroid belt, approximately 33 kilometers (21 miles) in diameter. It was discovered on 8 February 1878, by Austrian astronomer Johann Palisa at the Austrian Naval Observatory in Pola, in what is now Croatia. [1] The S-type asteroid has a rotation period of 11.77 hours. [13] It was named for the Istrian Peninsula. [3]
Istria is a non- family asteroid from the main belt's background population. [5] [6] It orbits the Sun in the central main-belt at a distance of 1.8–3.8 AU once every 4 years and 8 months (1,703 days; semi-major axis of 2.79 AU). Its orbit has an eccentricity of 0.35 and an inclination of 26 ° with respect to the ecliptic. [4]
Istria has been characterized as a common, stony S-type asteroid in both the Tholen and SMASS classification. [4]
In August 1979, a rotational lightcurve of Istria was obtained from photometric observations by American astronomer Alain Harris. Lightcurve analysis gave a well-defined rotation period of 11.77 hours with a brightness amplitude of 0.31 magnitude ( U=3). [12] Observations by French amateur astronomer Laurent Bernasconi gave a similar period of 11.6 hours ( U=2). [11]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Istria measures between 30.779 and 35.43 kilometers in diameter and its surface has an albedo between 0.1890 and 0.2582. [7] [8] [9] [10]
This minor planet was named after the Istrian Peninsula in the Adriatic Sea, where the city of Pula (then Pola) with its discovering observatory is located. A the time the peninsula was part of the Austro-Hungarian Empire. The asteroid's name was given by Vice-Admiral Bernhard von Wüllerstorf-Urbair, who is known as the captain of the first Austrian circumnavigatory adventure with the sail frigate SMS Novara. [3] The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 183). [3]