astro.wikisort.org - Asteroid

2732 Witt, provisional designation 1926 FG, is a bright asteroid and namesake of the Witt family located in the central regions of the asteroid belt, approximately 11 kilometers (7 miles) in diameter. It was discovered on 19 March 1926, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in Heidelberg, Germany. The unusual A-type asteroid was named after astronomer Carl Gustav Witt.[1][2]

2732 Witt

Discovery [1]
Discovered by	M. F. Wolf
Discovery site	Heidelberg Obs.
Discovery date	19 March 1926
Designations
MPC designation	(2732) Witt
Named after	Carl Gustav Witt (German astronomer)
Alternative designations	1926 FG · 1935 DF 1965 UP1 · 1969 RD 1978 PQ1 · 1979 YL6
Minor planet category	main-belt [1][2] · (middle) Witt [3]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc	92.02 yr (33,612 d)
Aphelion	2.8250 AU
Perihelion	2.6961 AU
Semi-major axis	2.7606 AU
Eccentricity	0.0234
Orbital period (sidereal)	4.59 yr (1,675 d)
Mean anomaly	129.05°
Mean motion	0° 12m 53.64s / day
Inclination	6.4925°
Longitude of ascending node	145.08°
Argument of perihelion	276.05°
Physical characteristics
Mean diameter	11.001±0.291 km[4]
Geometric albedo	0.305±0.022[4]
Spectral type	SMASS = A [2]
Absolute magnitude (H)	11.8[2]

Orbit and classification

Witt the parent body and namesake of the Witt family (535),[3] a large family of stony asteroids with more than 1,600 known members.[5]

It orbits the Sun in the central main-belt at a distance of 2.7–2.8 AU once every 4 years and 7 months (1,675 days; semi-major axis of 2.76 AU). Its orbit has an eccentricity of 0.02 and an inclination of 6° with respect to the ecliptic.[2] The body's observation arc begins at Heidelberg in April 1926, two week after its official discovery observation.[1]

Physical characteristics

In the SMASS classification, Witt is an uncommon A-type asteroid,[2] while the overall spectral type for members of the Witt family is that of an S-type.[5]^: 23

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Witt measures 11.001 kilometers in diameter and its surface has a high albedo of 0.305.[4]

Rotation period

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

Naming

This minor planet was named by Brian G. Marsden after Carl Gustav Witt (1866–1946), a German astronomer at the Berlin Observatory and a discoverer of minor planets himself, best known for the discovery of the near-Earth asteroid 433 Eros.[1] The official naming citation was published by the Minor Planet Center on 22 September 1983 (M.P.C. 8153).[6]

References

External links

• 2732 Witt CCD Spectrum, Schelte Bus and Richard Binzel (SMASS), 2004
• 2732 Witt, Dwarf Planets and Asteroids: Minor Bodies of the Solar System (p. 42)
• Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
• Dictionary of Minor Planet Names, Google books
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• 2732 Witt at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 2732 Witt at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] (2732) Witt

(2732) Witt ist ein Asteroid des Hauptgürtels, der am 19. März 1926 vom deutschen Astronomen Max Wolf in Heidelberg entdeckt wurde.

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- [en] 2732 Witt

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[ru] (2732) Витт

(2732) Витт (нем. Witt) — астероид главного пояса. Он был открыт 19 марта 1926 года немецким астрономом Максом Вольфом в обсерватории Хайдельберг в Германии и назван в честь немецкого астронома Карла Витта[1].

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