astro.wikisort.org - Asteroid

24260 Kriváň, provisional designation 1999 XW₁₂₇, is a stony Eunomian asteroid from the middle region of the asteroid belt, approximately 8 kilometers in diameter. It was discovered by Slovak astronomer Peter Kušnirák at the Czech Ondřejov Observatory on 13 December 1999, and named after the Kriváň mountain peak in Slovakia.[2][8]

24260 Kriváň

Discovery [1]
Discovered by	P. Kušnirák
Discovery site	Ondřejov Obs.
Discovery date	13 December 1999
Designations
MPC designation	(24260) Kriváň
Named after	Kriváň (Slovak mountain)[2]
Alternative designations	1999 XW127 · 1982 YG1
Minor planet category	main-belt · Eunomia [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	40.95 yr (14,956 days)
Aphelion	2.9352 AU
Perihelion	2.2617 AU
Semi-major axis	2.5985 AU
Eccentricity	0.1296
Orbital period (sidereal)	4.19 yr (1,530 days)
Mean anomaly	120.34°
Mean motion	0° 14m 7.08s / day
Inclination	14.283°
Longitude of ascending node	43.060°
Argument of perihelion	31.066°
Physical characteristics
Dimensions	8.320±0.189 km[4][5] 8.36 km (calculated)[3]
Synodic rotation period	3.318±0.001 h[6]
Geometric albedo	0.21 (assumed)[3] 0.2798±0.0414[4] 0.280±0.041[5]
Spectral type	S [3]
Absolute magnitude (H)	12.4[4] · 12.7[1][3] · 13.16±0.73[7]

Orbit and classification

The asteroid is a member of the Eunomia family, a large group of stony S-type asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun in the central main-belt at a distance of 2.3–2.9 AU once every 4 years and 2 months (1,530 days). Its orbit has an eccentricity of 0.13 and an inclination of 14° with respect to the ecliptic.[1] The first precovery was taken at the Australian Siding Spring Observatory in 1976, extending the asteroid's observation arc by 23 years prior to its discovery.[8]

Physical characteristics

In December 2011, a rotational lightcurve was obtained for this asteroid from photometric observation by U.S. astronomer James W. Brinsfield at the Via Observatory in Thousand Oaks, California. It gave a well-defined rotation period of 3.318±0.001 hours with a brightness variation of 0.42 in magnitude (U=3).[6]

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 8.3 kilometers in diameter and its surface has an albedo of 0.28,[4] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo of 0.21 – derived from 15 Eunomia, the family's largest member and namesake – and calculates a diameter of 8.4 kilometers with an absolute magnitude of 12.7.[3]

Naming

This minor planet was named after the Kriváň mountain (2,494 metres (8,182 ft)), located in the High Tatras of Slovakia. It is considered to be the country's most beautiful peak and one of its national symbols.[2] The approved naming citation was published by the Minor Planet Center on 4 August 2001 (M.P.C. 43194).[9]

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 (20001)-(25000) – Minor Planet Center
• 24260 Kriváň at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 24260 Kriváň at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

---