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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06604377587277152 6.318e-05  
a 44.01427894620443 0.008449 au
q 41.10740977227966 0.010146 au
i 5.199281791057498 0.00019984 deg
node 1.827122251973813 0.003201 deg
peri 296.3949261984258 0.12756 deg
M 129.4028232988489 0.1359 deg
tp 2420262.445959843331
(1914-May-09.94595984)
29.512 TDB
period 106656.8649942213
292.01
30.711
0.08408
d
yr
n .003375310159542988 9.7189e-07 deg/d
Q 46.9211481201292 0.009007 au
  Orbit Determination Parameters
   # obs. used (total)      76  
   data-arc span      6580 days (18.02 yr)  
   first obs. used      2001-10-20  
   last obs. used      2019-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .38158  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 13:07:30  

Additional Information
 Earth MOID = 40.0944 au 
 Jupiter MOID = 35.9796 au 
 T_jup = 5.898 
[ 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   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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