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

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09157807832348765 9.6238e-06  
a 44.0408000194662 0.00090125 au
q 40.00762818585447 0.00045831 au
i .5634604652859668 7.3424e-06 deg
node 85.11696838480114 0.0049945 deg
peri 200.2900390459896 0.0092903 deg
M 60.24989306359046 0.0080792 deg
tp 2441334.184216135283
(1972-Jan-17.68421614)
1.8565 TDB
period 106753.2796349166
292.27
3.2769
0.008972
d
yr
n .003372261735013262 1.0352e-07 deg/d
Q 48.07397185307794 0.00098379 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .61458  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:24:00  

Additional Information
 Earth MOID = 38.9893 au 
 Jupiter MOID = 34.8074 au 
 T_jup = 5.912 
[ 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   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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