astro.wikisort.org - Asteroid

19738 Calinger, provisional designation 2000 AS₉₇, is a background asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter.

19738 Calinger

Discovery[1]
Discovered by	LINEAR
Discovery site	Lincoln Lab's ETS
Discovery date	4 January 2000
Designations
MPC designation	(19738) Calinger
Named after	Manetta Calinger (DCYSC mentor)[2]
Alternative designations	2000 AS97 · 1991 RZ36
Minor planet category	main-belt · inner background
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	26.88 yr (9,819 days)
Aphelion	2.7043 AU
Perihelion	1.8606 AU
Semi-major axis	2.2824 AU
Eccentricity	0.1848
Orbital period (sidereal)	3.45 yr (1,260 days)
Mean anomaly	165.65°
Mean motion	0° 17m 8.88s / day
Inclination	7.7356°
Longitude of ascending node	90.753°
Argument of perihelion	280.16°
Physical characteristics
Dimensions	3.272±0.082[3]
Geometric albedo	0.314±0.056[3]
Absolute magnitude (H)	14.1[1]

It was discovered on 4 January 2000, by members of the Lincoln Near-Earth Asteroid Research team at Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico, and named after DCYSC-mentor Manetta Calinger.[2][4]

Classification and orbit

Calinger is a non-family asteroid from the main belt's background population. It orbits the Sun in the inner asteroid belt at a distance of 1.9–2.7 AU once every 3 years and 5 months (1,260 days). Its orbit has an eccentricity of 0.18 and an inclination of 8° with respect to the ecliptic.[1]

The body's observation arc begins almost 10 years prior to its official discovery observation, with a precovery from the Digitized Sky Survey taken at Palomar Observatory in May 1990.[4]

Physical characteristics

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Calinger measures 3.272 kilometers in diameter and its surface has a high albedo of 0.314.[3] It has an absolute magnitude of 14.1.[1]

Lightcurves

As of 2017, Calinger' rotation period and shape remain unknown.[1][5]

Naming

This minor planet was named after Manetta Calinger who mentored a finalist in the 2003 Discovery Channel Youth Science Challenge, DCYSC.[2] The approved naming citation was published by the Minor Planet Center on 10 October 2003 (M.P.C. 49772).[6]

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 (15001)-(20000) – Minor Planet Center
• 19738 Calinger at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 19738 Calinger at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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