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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09152867804448829 9.4473e-06  
a 43.97724596724785 0.00089848 au
q 39.95206677982835 0.00046572 au
i .5634611367026128 7.3456e-06 deg
node 85.12121639773606 0.0049978 deg
peri 199.3113411781357 0.0093574 deg
M 60.48438737167281 0.0081402 deg
tp 2441103.458086833769
(1971-May-31.95808683)
1.8687 TDB
period 106522.2839928659
291.64
3.2645
0.008938
d
yr
n .003379574550092356 1.0357e-07 deg/d
Q 48.00242515466735 0.00098072 au
  Orbit Determination Parameters
   # obs. used (total)      305  
   data-arc span      7673 days (21.01 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-09-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .61458  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:17:05  

Additional Information
 Earth MOID = 38.9356 au 
 Jupiter MOID = 34.7478 au 
 T_jup = 5.908 
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Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 5.9   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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