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66652 Borasisi (1999 RZ253)
Classification: TransNeptunian Object          SPK-ID: 2066652
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08655813599238364 0.00028276  
a 43.57046555421026 0.016163 au
q 39.79908727151746 0.0032178 au
i .5632474293889701 8.9354e-05 deg
node 84.77635517455906 0.019789 deg
peri 194.8952132908403 0.082444 deg
M 60.66020747704119 0.10186 deg
tp 2439899.894693542283
20.126 JED
period 105047.7434113055
n .003427013168578506 1.907e-06 deg/d
Q 47.34184383690306 0.017562 au
  Orbit Determination Parameters
   # obs. used (total)      51  
   data-arc span      4790 days (13.11 yr)  
   first obs. used      1999-09-08  
   last obs. used      2012-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   fit RMS      .47883  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 11:56:55  

Additional Information
 Earth MOID = 38.7824 au 
 Jupiter MOID = 34.5681 au 
 T_jup = 5.885 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 5.9 mag n/a MPO253782  

66652 Borasisi           Discovered 1999 Sept. 8 by C. A. Trujillo, J. X. Luu and D. C. Jewitt at Mauna Kea.
Also named is (66652) I Pabu, discovered 2003 Apr. 23 by K. Noll, D. Stephens, W. Grundy and colleagues using the Hubble Space Telescope. Borasisi and Pabu are the mythical personifications of the sun and moon in the fictional cosmogony of Bokononism described in Kurt Vonnegut's novel Cat's Cradle: "Borasisi, the sun, held Pabu, the moon, in his arms and hoped that Pabu would bear him a fiery child. But poor Pabu gave birth to children that were cold, that did not burn... Then poor Pabu herself was cast away, and she went to live with her favorite child, which was Earth."
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070926/MPCPages.arcLast Updated: 2007-09-30
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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