astro.wikisort.org - Asteroid

1740 Paavo Nurmi, provisional designation 1939 UA, is rare-type asteroid from the inner regions of the asteroid belt, approximately 13 kilometers in diameter.

1740 Paavo Nurmi

Discovery[1]
Discovered by	Y. Väisälä
Discovery site	Turku Obs.
Discovery date	18 October 1939
Designations
MPC designation	(1740) Paavo Nurmi
Named after	Paavo Nurmi (Sports Legend)[2]
Alternative designations	1939 UA · 1933 DD 1951 YO2 · 1954 NC 1966 TA
Minor planet category	main-belt · (inner)
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	77.13 yr (28,172 days)
Aphelion	2.9385 AU
Perihelion	1.9947 AU
Semi-major axis	2.4666 AU
Eccentricity	0.1913
Orbital period (sidereal)	3.87 yr (1,415 days)
Mean anomaly	43.639°
Mean motion	0° 15m 15.84s / day
Inclination	1.9994°
Longitude of ascending node	296.10°
Argument of perihelion	78.724°
Physical characteristics
Dimensions	12.762±0.150 km[3]
Geometric albedo	0.046±0.006[3]
Spectral type	Tholen = F[1] B–V = 0.613[1] U–B = 0.194[1]
Absolute magnitude (H)	13.24[1]

It was discovered on 18 October 1939, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland.[4] It was named after Finnish distance runner Paavo Nurmi.[2]

Orbit and classification

Paavo Nurmi orbits the Sun in the inner main-belt at a distance of 2.0–2.9 AU once every 3 years and 10 months (1,415 days). Its orbit has an eccentricity of 0.19 and an inclination of 2° with respect to the ecliptic.[1]

The asteroid was first identified as 1933 DD at Heidelberg Observatory in 1933. This observation, however, remained unused and the body's observation arc begins with its official discovery observation at Turku in 1939.[4]

Physical characteristics

On the Tholen taxonomic scheme, Paavo Nurmi has been characterized as a rare F-type asteroid,[1] a subtype of the carbonaceous asteroids, which are common in the outer, but not in the inner main-belt.

Paavo Nurmi has an absolute magnitude of 13.24.[1] According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures 12.76 kilometers in diameter, and its surface has an albedo of 0.046.[3] As of 2017, its rotation period and shape remain unknown.[1]

Naming

This minor planet was named for famed Turku-born Finnish distance runner Paavo Nurmi, also known as The Flying Finn, who won nine Olympic gold medals and set 22 official world records at distances between 1,500 metres and 20 kilometres.[2] The official naming citation was published by the Minor Planet Center on 1 April 1980 (M.P.C. 5281).[5]

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
• 1740 Paavo Nurmi at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 1740 Paavo Nurmi at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] (1740) Paavo Nurmi

(1740) Paavo Nurmi ist ein Asteroid des Hauptgürtels, der am 18. Oktober 1939 von dem finnischen Astronomen Yrjö Väisälä in Turku entdeckt wurde.

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- [en] 1740 Paavo Nurmi

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