2003 LA7

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2003 LA7
Discovery
Discovery date 2003
Designations
MPC designation 2003 LA7
1:4 resonance[1][2]
Orbital characteristics[3]
Epoch June 30, 2009 (2455000.5)
Aphelion 117.59 AU (Q)
Perihelion 35.948 AU (q)
76.769 AU (a)
Eccentricity 0.53173
672.66 yr
342.70° (M)
Inclination 5.6456°
34.162°
271.54°
Physical characteristics
Dimensions ~231 km (assumed)[4]
Albedo 0.09 (assumed)
~22.4[5]
6.4[3]

2003 LA7, also written as 2003 LA7, is a Resonant trans-Neptunian object that goes around the Sun once for every four times that Neptune goes around. Another possible Fourtino is 2011 UP411

Orbit
TNO-2003LA7-orbit.gif
The orbit of "fourtino" 2003 LA7 compared to Pluto and Neptune.
1:4 Libration
TNO-2003LA7-50000y.gif
Neptune is held stationary at 5 o'clock.

2003 LA7 is in a 1:4 resonance with the planet Neptune.[1][2] For every one orbit that a it makes, Neptune orbits 4 times.

It is currently 43 AU from the Sun,[5] and will come to perihelion around 2041.[3]

Assuming a generic TNO albedo of 0.09, it is about 231 km in diameter.[4]

It has been observed 14 times over 4 oppositions.[3]

See also[edit]

References[edit]

  1. ^ a b "MPEC 2009-C70 :Distant Minor Planets (2009 FEB. 28.0 TT)". Minor Planet Center. 2009-02-10. Retrieved 2009-03-14. 
  2. ^ a b Marc W. Buie. "Orbit Fit and Astrometric record for 03LA7" (last observation: 2008-03-12 using 17 of 18 observations). SwRI (Space Science Department). Retrieved 2014-10-13. 
  3. ^ a b c d "JPL Small-Body Database Browser: (2003 LA7)" (last observation: 2007-04-21). Retrieved 2009-03-14. 
  4. ^ a b Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 13 February 2009. Retrieved 2009-03-14. 
  5. ^ a b "AstDys 2003LA7 Ephemerides". Department of Mathematics, University of Pisa, Italy. Archived from the original on 2009-05-14. Retrieved 2009-03-19. 

External links[edit]