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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06530422538348254 5.5519e-05  
a 44.18912764650737 0.0084965 au
q 41.30339089518037 0.0097996 au
i 5.194359100076298 0.00015346 deg
node 1.654910351425189 0.0025529 deg
peri 300.6357604027723 0.13039 deg
M 127.7061329072407 0.1391 deg
tp 2421335.444981593602
(1917-Apr-16.94498159)
30.678 TDB
period 107293.0445445305
293.75
30.945
0.08472
d
yr
n .003355296715907684 9.6771e-07 deg/d
Q 47.07486439783436 0.0090513 au
  Orbit Determination Parameters
   # obs. used (total)      81  
   data-arc span      6580 days (18.02 yr)  
   first obs. used      2001-10-20  
   last obs. used      2019-10-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .37465  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:11:23  

Additional Information
 Earth MOID = 40.2907 au 
 Jupiter MOID = 36.1912 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 5.8   n/a MPO502893  

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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