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JPL Small-Body Database Browser
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154978 (2004 UN3)
Classification: Main-belt Asteroid          SPK-ID: 2154978
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 .310588859474803 4.968e-08  
a 2.689057058986848 1.7975e-08 au
q 1.853865893973455 1.2979e-07 au
i 3.930249761275747 5.1121e-06 deg
node 54.82465122836668 7.1511e-05 deg
peri 274.2456392499321 7.1965e-05 deg
M 240.1161274013971 9.053e-06 deg
tp 2459536.860412336781
(2021-Nov-18.36041234)
4.3294e-05 TDB
period 1610.639898894053
4.41
1.6149e-05
4.421e-08
d
yr
n .2235136483624888 2.2411e-09 deg/d
Q 3.524248224000241 2.3557e-08 au
  Orbit Determination Parameters
   # obs. used (total)      517  
   data-arc span      7539 days (20.64 yr)  
   first obs. used      1999-06-15  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:35:58  

Additional Information
 Earth MOID = .847985 au 
 Jupiter MOID = 1.86205 au 
 T_jup = 3.298 
[ 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 15.7   n/a MPO436784  

154978 (2004 UN3)          Discovered 2004-Oct-19 by LINEAR at Socorro
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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