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1345 Potomac (), provisional designation 1908 CG , is a dark Hildian asteroid from the outermost regions of the asteroid belt , approximately 73 kilometers (45 mi ) in diameter. It was discovered on 4 February 1908, by American astronomer Joel Metcalf at the Taunton Observatory (803 [1] X-type asteroid has a rotation period of 11.4 hours.[4] Potomac River on which Washington, D.C. is located.[2]
Orbit and classification [ edit ]
Potomac is member of the dynamical Hilda group , which stays in 3:2 orbital resonance with Jupiter.[1] [4] Hilda family but a non-family asteroid of the main belt's background population when applying the Hierarchical Clustering Method to its proper orbital elements .[5]
It orbits the Sun in the outermost asteroid belt at a distance of 3.3–4.7 AU semi-major axis of 3.99 AU ). Its orbit has an eccentricity of 0.18 and an inclination of 11° with respect to the ecliptic .[3] observation arc begins at the United States Naval Observatory , three weeks after its official discovery observation at Taunton.[1]
This minor planet was named after the U.S. Potomac River in the Mid-Atlantic region of the United States, on which Washington, D.C. is located. The river flows from West Virginia into the Chesapeake Bay and forms the southern boundary of Maryland . The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 122 [2]
Physical characteristics [ edit ]
In the Tholen classification , Potomac is an X-type asteroid .[3] C-type asteroid by Pan-STARRS photometric survey.[10]
Rotation period [ edit ]
Two rotational lightcurves of Potomac was obtained from photometric observations. Lightcurve analysis gave a rotation period of 11.40 and 11.41 hours with a brightness amplitude of 0.22 and 0.24 magnitude , respectively (U=2/3 [11] [9]
Diameter and albedo [ edit ]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS , the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer , Potomac measures between 71.82 and 76.72 kilometers in diameter and its surface has an albedo between 0.039 and 0.0439.[6] [7] [8]
The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0439 and a diameter of 71.82 kilometers based on an absolute magnitude of 9.73.[4]
References [ edit ]
^ a b c Schmadel, Lutz D. (2007). "(1345) Potomac". Dictionary of Minor Planet Names . Springer Berlin Heidelberg. p. 109. doi :10.1007/978-3-540-29925-7_1346 . ISBN 978-3-540-00238-3
^ a b c d e f g h "JPL Small-Body Database Browser: 1345 Potomac (A908 CE)" (2019-05-10 last obs.). Jet Propulsion Laboratory . Archived from the original on 20 August 2020. Retrieved 29 October 2019 .
^ a b c d e f "LCDB Data for (1345) Potomac" . Asteroid Lightcurve Database (LCDB). Retrieved 17 November 2017 .
^ a b "Asteroid 1345 Potomac – Proper Elements" . AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019 .
^ a b c d Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0" . NASA Planetary Data System . 12 Bibcode :2004PDSS...12.....T . Retrieved 22 October 2019 .
^ a b c Grav, T.; Mainzer, A. K.; Bauer, J.; Masiero, J.; Spahr, T.; McMillan, R. S.; et al. (January 2012). "WISE/NEOWISE Observations of the Hilda Population: Preliminary Results" . The Astrophysical Journal . 744 (2 ): 15. arXiv :1110.0283 Bibcode :2012ApJ...744..197G . doi :10.1088/0004-637X/744/2/197 . S2CID 44000310 . Retrieved 17 November 2017 .
^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey" . Publications of the Astronomical Society of Japan . 63 5 ): 1117–1138. Bibcode :2011PASJ...63.1117U . doi :10.1093/pasj/63.5.1117 online , AcuA catalog p. 153 )
^ a b Brinsfield, James W. (April 2010). "Asteroid Lightcurve Analysis at Via Capote Observatory: 4th Quarter 2009" . The Minor Planet Bulletin . 37 2 ): 50–53. Bibcode :2010MPBu...37...50B . ISSN 1052-8091 . Retrieved 17 November 2017 .
^ a b Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results" . Icarus . 261 : 34–47. arXiv :1506.00762 Bibcode :2015Icar..261...34V . doi :10.1016/j.icarus.2015.08.007 . S2CID 53493339 . Retrieved 17 November 2017 .
^ Dahlgren, M.; Lahulla, J. F.; Lagerkvist, C.-I.; Lagerros, J.; Mottola, S.; Erikson, A.; et al. (June 1998). "A Study of Hilda Asteroids. V. Lightcurves of 47 Hilda Asteroids" . Icarus . 133 (2 ): 247–285. Bibcode :1998Icar..133..247D . doi :10.1006/icar.1998.5919 . Retrieved 17 November 2017 .
External links [ edit ]
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=1345_Potomac&oldid=1209750030 " 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 ) ● H i l d a a s t e r o i d s ● D i s c o v e r i e s b y J o e l H a s t i n g s M e t c a l f ● N a m e d m i n o r p l a n e t s ● X - t y p e a s t e r o i d s ( T h o l e n ) ● 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 1 9 0 8 H i d d e n c a t e g o r i e s : ● P a g e s u s i n g t h e P h o n o s e x t e n s i o n ● 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 ● P a g e s i n c l u d i n g r e c o r d e d p r o n u n c i a t i o n s ● 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 3 F e b r u a r y 2 0 2 4 , a t 1 1 : 2 7 ( 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
