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1345 Potomac information


1345 Potomac
Discovery[1]
Discovered byJ. H. Metcalf
Discovery siteTaunton Obs.
Discovery date4 February 1908
Designations
MPC designation
(1345) Potomac
Named after
Potomac River[2]
(U.S. Mid-Atlantic river)
Alternative designations
1908 CG · 1932 CF
1932 EA · 1932 FB
1971 DE2
Minor planet category
main-belt · (outer)[3]
Hilda[1][4] · background[5]
Orbital characteristics[3]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 0
Observation arc111.20 yr (40,617 d)
Aphelion4.7100 AU
Perihelion3.2611 AU
Semi-major axis
3.9856 AU
Eccentricity0.1818
Orbital period (sidereal)
7.96 yr (2,906 d)
Mean anomaly
31.380°
Mean motion
0° 7m 26.04s / day
Inclination11.402°
Longitude of ascending node
137.43°
Argument of perihelion
333.12°
Jupiter MOID0.4592 AU
TJupiter2.9930
Physical characteristics
Mean diameter
71.82±3.0 km[6]
72.975±0.463 km[7]
76.72±2.34 km[8]
Synodic rotation period
11.41±0.01 h[9]
Geometric albedo
0.039±0.003[8]
0.043±0.008[7]
0.0439±0.004[6]
Spectral type
Tholen = X[3] · C[4][10]
B–V = 0.719[3]
U–B = 0.286[3]
Absolute magnitude (H)
9.73[3][4][6][8]
9.9[1]

1345 Potomac (/pəˈtmək/ ), 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) in Massachusetts, United States.[1] The X-type asteroid has a rotation period of 11.4 hours.[4] It was named for the Potomac River on which Washington, D.C. is located.[2]

  1. ^ a b c d Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference jpldata was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference lcdb was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference AstDys-object was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference SIMPS was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Grav-2012a was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Brinsfield-2010d was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).

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