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154980 (2004 UN7)
Classification: Main-belt Asteroid          SPK-ID: 2154980
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 .08764120060116903 3.8278e-08  
a 3.022408143872306 3.2943e-08 au
q 2.757520665436586 1.2044e-07 au
i 9.949463767112121 9.3575e-06 deg
node 8.280478312812582 2.6325e-05 deg
peri 86.48745464206145 6.9941e-05 deg
M 297.2389547897957 6.8877e-05 deg
tp 2459335.092159492408
(2021-Apr-30.59215949)
0.00037031 TDB
period 1919.234726155937
5.25
3.1378e-05
8.591e-08
d
yr
n .1875747635731087 3.0667e-09 deg/d
Q 3.287295622308025 3.583e-08 au
  Orbit Determination Parameters
   # obs. used (total)      473  
   data-arc span      7348 days (20.12 yr)  
   first obs. used      1999-10-14  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 13:30:57  

Additional Information
 Earth MOID = 1.79699 au 
 Jupiter MOID = 1.88985 au 
 T_jup = 3.217 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457243.5 (2015-Aug-09.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08391916474515894 3.7997e-08  
q 2.770069634325965 1.1917e-07 au
tp 2457409.988454864435
(2016-Jan-22.48845486)
0.00037247 TDB
node 8.390091069701167 2.6252e-05 deg
peri 85.70115503834408 7.3165e-05 deg
i 9.966139500918027 9.3708e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      473  
   data-arc span      7348 days (20.12 yr)  
   first obs. used      1999-10-14  
   last obs. used      2019-11-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 13:30:57  

Additional Information
 Jupiter MOID = 1.88985 au 
 T_jup = 3.217 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.443763247785075E-15 -4.376582193265383E-15 3.413574731424599E-12 2.256375864397369E-15 6.690038429968454E-13 6.286595341766114E-16
q -4.376582193265383E-15 1.420100339879192E-14 -4.395661396833696E-12 -1.070014844766029E-14 -9.556633583128914E-13 5.244414997429083E-15
tp 3.413574731424599E-12 -4.395661396833696E-12 1.387320976162331E-7 1.292630872941573E-11 2.545489532301534E-8 6.72035158265395E-11
node 2.256375864397369E-15 -1.070014844766029E-14 1.292630872941573E-11 6.891562265191076E-10 -6.756753676852043E-10 -1.158338139486562E-10
peri 6.690038429968454E-13 -9.556633583128914E-13 2.545489532301534E-8 -6.756753676852043E-10 5.353133562175819E-9 1.263538657019268E-10
i 6.286595341766114E-16 5.244414997429083E-15 6.72035158265395E-11 -1.158338139486562E-10 1.263538657019268E-10 8.781277181564052E-11

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 14.9   n/a MPO502914  

154980 (2004 UN7)          Discovered 2004-Oct-21 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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