astro.wikisort.org - Asteroid

4065 Meinel, provisional designation 2820 P-L, is an asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 24 September 1960, by Dutch astronomer couple Ingrid and Cornelis van Houten on photographic plates taken by Dutch–American astronomer Tom Gehrels at Palomar Observatory, California.[4] The asteroid was named for American astronomer Aden Meinel.[2]

4065 Meinel

Discovery [1]
Discovered by	C. J. van Houten I. van Houten T. Gehrels
Discovery site	Palomar Obs.
Discovery date	24 September 1960
Designations
MPC designation	(4065) Meinel
Named after	Aden Meinel (American astronomer)[2]
Alternative designations	2820 P-L · 1976 JF6 1986 GQ1
Minor planet category	main-belt inner
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	63.81 yr (23,306 days)
Aphelion	2.4404 AU
Perihelion	2.0932 AU
Semi-major axis	2.2668 AU
Eccentricity	0.0766
Orbital period (sidereal)	3.41 yr (1,247 days)
Mean anomaly	133.39°
Mean motion	0° 17m 19.68s / day
Inclination	5.1640°
Longitude of ascending node	22.788°
Argument of perihelion	102.54°
Physical characteristics
Dimensions	3.873±0.075 km[3]
Geometric albedo	0.270±0.021[3]
Absolute magnitude (H)	14.1[1]

Orbit and classification

The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt.^{[citation needed]} It orbits the Sun in the inner main-belt at a distance of 2.1–2.4 AU once every 3 years and 5 months (1,247 days). Its orbit has an eccentricity of 0.08 and an inclination of 5° with respect to the ecliptic.[1] A first precovery was taken at the discovering observatory in 1953, extending Meinel's observation arc by 7 years prior to its discovery.[4]

Physical characteristics

Rotation period

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Meinel measures 3.87 kilometers in diameter and its surface has an albedo of 0.270.[3] As of 2016, the asteroid's composition, shape and rotation period remains unknown.[1][5]

Diameter and albedo

The survey designation "P-L" stands for Palomar–Leiden, named after Palomar and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with the discovery of several thousand minor planets.[6]

Naming

This minor planet was named in honor of the American physicist and astronomer Aden Meinel (1922–2011).[2] The official naming citation was published by the Minor Planet Center on 18 February 1992 (M.P.C. 19695).[7]

References

External links

• Asteroid Lightcurve Database (LCDB), query form (info Archived December 16, 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
• 4065 Meinel at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 4065 Meinel at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

---

[de] (4065) Meinel

(4065) Meinel ist ein Asteroid der Flora-Familie[2] des Hauptgürtels, der am 24. September 1960 vom Forscherteam Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld und Tom Gehrels im Rahmen des Palomar-Leiden-Surveys entdeckt wurde.[3][4] Das Objekt wurde jedoch bereits am 14. August 1953 vom Rainbow Observatorium in der Nähe von Coonabarabran zum ersten Mal gesichtet.[5][6]

---

- [en] 4065 Meinel

---

---