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P a g e s f o r l o g g e d o u t e d i t o r s l e a r n m o r e ● C o n t r i b u t i o n s ● T a l k
( T o p )
1 O r b i t a n d c l a s s i f i c a t i o n
T o g g l e O r b i t a n d c l a s s i f i c a t i o n s u b s e c t i o n
1 . 1 C l o s e a p p r o a c h e s
1 . 2 S e n t r y R i s k T a b l e
2 P h y s i c a l c h a r a c t e r i s t i c s
3 N u m b e r i n g a n d n a m i n g
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5 E x t e r n a l l i n k s
T o g g l e t h e t a b l e o f c o n t e n t s
( 2 4 2 4 5 0 ) 2 0 0 4 Q Y 2
6 l a n g u a g e s
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A p p e a r a n c e
F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
(242450) 2004 QY2 prov. designation :2004 QY2 ) is an asteroid on an eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group , approximately 3 kilometers (2 miles) in diameter. It was discovered on 20 August 2004 by the Siding Spring Survey at an apparent magnitude of 16.5 using the 0.5-metre (20 in ) Uppsala Southern Schmidt Telescope .[2] largest potentially hazardous asteroids known to exist.[6]
Orbit and classification [ edit ]
2004 QY2 orbits the Sun at a distance of 0.6–1.6 AU semi-major axis of 1.08 AU ). Its orbit has an eccentricity of 0.48 and an inclination of 37° with respect to the ecliptic .[3] observation arc begins with its official discovery observation at Siding Spring.[1]
The object is a member of the Apollo asteroids , the largest subgroup of near-Earth asteroids which cross the orbit of Earth . Unlike many other members of this dynamical group, 2004 QY2 is not a Mars-crosser , as its aphelion is too small to cross the orbit of the Red Planet at 1.66 AU.[3]
Close approaches [ edit ]
With an absolute magnitude of 14.7, 2004 QY2 is one of the brightest potentially hazardous asteroids ever discovered (see PHA-list ) .[6] [7] Earth minimum orbital intersection distance of 0.0469 AU (7,020,000 km ), which translates into 18.3 lunar distances .[3] mi ).[3]
Sentry Risk Table [ edit ]
Due to its originally estimated size of 5.5 kilometers, 2004 QY2 was one of the largest objects to appear on the Sentry Risk Table .[8] [9]
Physical characteristics [ edit ]
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer , 2004 QY2 has an albedo of 0.274, and it measures 2.914 and 3.320 kilometers in diameter, respectively.[4] [5]
As of 2018, no rotational lightcurve of 2004 QY2 has been obtained from photometric observations. The body's rotation period , shape and spin axis remain unknown.[10] spectral type has never been assessed.[3] [10]
Numbering and naming [ edit ]
This minor planet was numbered by the Minor Planet Center on 26 June 2006.[11] named .[1]
References [ edit ]
^ a b "MPEC 2004-Q27 : 2004 QY2 (K04Q02Y)" . IAU Minor Planet Center. 22 August 2004. Retrieved 17 June 2012 .
^ a b c d e f g h "JPL Small-Body Database Browser: 242450 (2004 QY2)" (2016-04-01 last obs.). Jet Propulsion Laboratory . Retrieved 19 January 2018 .
^ a b c Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal . 814 (2 ): 13. arXiv :1509.02522 Bibcode :2015ApJ...814..117N . doi :10.1088/0004-637X/814/2/117 .
^ a b Mainzer, A.; Bauer, J.; Cutri, R. M.; Grav, T.; Masiero, J.; Beck, R.; et al. (September 2014). "Initial Performance of the NEOWISE Reactivation Mission". The Astrophysical Journal . 792 (1 ): 14. arXiv :1406.6025 Bibcode :2014ApJ...792...30M . doi :10.1088/0004-637X/792/1/30 .
^ a b "List of the Potentially Hazardous Asteroids (PHAs)" . Minor Planet Center . Retrieved 19 January 2018 .
^ "JPL Small-Body Database Search Engine: PHAs and H < 15 (mag)" . JPL Solar System Dynamics. Retrieved 19 January 2018 .
^ "Major News about Minor Objects" . hohmanntransfer. 22 August 2004. Archived from the original on 5 November 2016. Retrieved 19 January 2018 .
^ "Sentry: Earth Impact Monitoring – Removed Objects" . NASA/JPL CNEOS – Center for Near-Earth Object Studies. Retrieved 19 January 2018 .
^ a b "LCDB Data for (242450)" . Asteroid Lightcurve Database (LCDB). Retrieved 19 January 2018 .
^ "MPC/MPO/MPS Archive" . Minor Planet Center . Retrieved 25 February 2018 .
External links [ edit ]
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R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=(242450)_2004_QY2&oldid=1187143418 " C a t e g o r i e s : ● M i n o r p l a n e t o b j e c t a r t i c l e s ( n u m b e r e d ) ● A p o l l o a s t e r o i d s ● D i s c o v e r i e s b y S S S ● P o t e n t i a l l y h a z a r d o u s a s t e r o i d s ● N e a r - E a r t h o b j e c t s r e m o v e d f r o m t h e S e n t r y R i s k T a b l e ● A s t r o n o m i c a l o b j e c t s d i s c o v e r e d i n 2 0 0 4 H i d d e n c a t e g o r i e s : ● U s e d m y d a t e s f r o m O c t o b e r 2 0 1 9 ● W e b a r c h i v e t e m p l a t e w a y b a c k l i n k s ● A r t i c l e s w i t h J P L S B D B i d e n t i f i e r s ● A r t i c l e s w i t h M P C i d e n t i f i e r s
● T h i s p a g e w a s l a s t e d i t e d o n 2 7 N o v e m b e r 2 0 2 3 , a t 1 9 : 0 5 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
