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148780 Altjira (2001 UQ18)
Classification: TransNeptunian Object          SPK-ID: 2148780
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06107613798708086 0.000236  
a 44.1627729503285 0.0067409 au
q 41.46548133572211 0.012472 au
i 5.205282912897107 0.00049561 deg
node 2.005843157315258 0.0073658 deg
peri 296.776620981402 0.15093 deg
M 125.8734779507745 0.17667 deg
tp 2420119.198734132820
(1913-Dec-17.69873413)
46.918 JED
period 107197.0734056384
293.49
24.543
0.0672
d
yr
n .003358300637907756 7.689e-07 deg/d
Q 46.86006456493488 0.0071526 au
  Orbit Determination Parameters
   # obs. used (total)      70  
   data-arc span      2539 days (6.95 yr)  
   first obs. used      2001-10-20  
   last obs. used      2008-10-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   fit RMS      .3195  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 08:11:02  

Additional Information
 Earth MOID = 40.4529 au 
 Jupiter MOID = 36.3337 au 
 T_jup = 5.910 
[ 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 5.7 mag n/a MPO157315  

148780 Altjira           Discovered 2001 Oct. 20 by the Deep Ecliptic Survey at Kitt Peak.
According to the mythology of the Arrernte in central Australia, Altjira was the central god of the Dreamtime who created the earth and then retired to the sky.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080819/MPCPages.arcLast Updated: 2008-08-25
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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