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JPL Small-Body Database Browser
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154976 (2004 UA1)
Classification: Main-belt Asteroid          SPK-ID: 2154976
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05240591239879746 6.4444e-08  
a 3.118661708933498 5.2055e-08 au
q 2.955225396613645 1.9879e-07 au
i 10.20459244335562 7.9573e-06 deg
node 307.3835050245175 2.9004e-05 deg
peri 311.5960003573628 7.7898e-05 deg
M 67.74721631836519 7.4372e-05 deg
tp 2458621.935589107289
(2019-May-18.43558911)
0.00041373 TDB
period 2011.642622789681
5.51
5.0366e-05
1.379e-07
d
yr
n .1789582284256652 4.4806e-09 deg/d
Q 3.282098021253351 5.4783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      413  
   data-arc span      6294 days (17.23 yr)  
   first obs. used      2001-01-21  
   last obs. used      2018-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56377  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 19:11:37  

Additional Information
 Earth MOID = 1.95075 au 
 Jupiter MOID = 1.89942 au 
 T_jup = 3.190 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO310209  

154976 (2004 UA1)          Discovered 2004-Oct-19 by Hormersdorf at Hormersdorf
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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