astro.wikisort.org - Asteroid

2644 Victor Jara, provisional designation 1973 SO₂, is an asteroid from the inner regions of the asteroid belt, approximately 6 kilometers (3.7 miles) in diameter. It was discovered on 22 September 1973, by Soviet-Russian astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. It was named after Chilean singer and composer Víctor Jara.[1]

2644 Victor Jara

Discovery [1]
Discovered by	N. Chernykh
Discovery site	Crimean Astrophysical Obs.
Discovery date	22 September 1973
Designations
MPC designation	(2644) Victor Jara
Named after	Víctor Jara [1] (Chilean singer and composer)
Alternative designations	1973 SO2 · 1979 HD
Minor planet category	main-belt [1][2] · (inner) background [3]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc	64.04 yr (23,389 d)
Aphelion	2.5286 AU
Perihelion	1.8116 AU
Semi-major axis	2.1701 AU
Eccentricity	0.1652
Orbital period (sidereal)	3.20 yr (1,168 d)
Mean anomaly	10.705°
Mean motion	0° 18m 29.88s / day
Inclination	2.6810°
Longitude of ascending node	347.62°
Argument of perihelion	309.35°
Physical characteristics
Mean diameter	5.914±0.223 km[4]
Geometric albedo	0.153±0.021[4]
Absolute magnitude (H)	13.3[2]

Orbit and classification

Victor Jara is a non-family asteroid of the main belt's background population.[3] It orbits the Sun in the inner main-belt at a distance of 1.8–2.5 AU once every 3 years and 2 months (1,168 days; semi-major axis of 2.17 AU). Its orbit has an eccentricity of 0.17 and an inclination of 3° with respect to the ecliptic.[2]

The body's observation arc begins with a precovery taken at the Palomar Observatory in April 1954, or nearly 20 years prior to its official discovery observation.[1]

Physical characteristics

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Victor Jara measures 5.914 kilometers in diameter and its surface has an albedo of 0.153.[4]

Rotation period

As of 2018, no rotational lightcurve of Victor Jara has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.[2]

Naming

This minor planet was named by the discoverer after Chilean folk singer and activist Víctor Jara, who was assassinated on 16 September 1973, just six days prior to the planet's discovery. The official naming citation was published by the Minor Planet Center on 15 May 1984 (M.P.C. 8800).[5]

Víctor Jara, a prominent communist political activist in Chile, toured the Soviet Union in the 1960s and praised its culture, its scientific achievements and the friendliness of its working people. He was tortured and murdered shortly after the 1973 Chilean coup d'état led by Army Commander-in-Chief Augusto Pinochet, that ended the government of the socialist Salvador Allende.

References

External links

• Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• 2644 Victor Jara at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 2644 Victor Jara at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] (2644) Victor Jara

(2644) Victor Jara (1973 SO2; 1979 HD) ist ein ungefähr vier Kilometer großer Asteroid des inneren Hauptgürtels, der am 22. September 1973 vom russischen (damals: Sowjetunion) Astronomen Nikolai Stepanowitsch Tschernych am Krim-Observatorium (Zweigstelle Nautschnyj) auf der Halbinsel Krim (IAU-Code 095) entdeckt wurde.

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- [en] 2644 Victor Jara

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