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146331 (2001 NO20)
Classification: Main-belt Asteroid          SPK-ID: 2146331
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1108376757528229 5.8449e-08  
a 2.59003074481046 1.7888e-08 au
q 2.302957756927316 1.4726e-07 au
i 12.77121806276064 4.5245e-06 deg
node 274.6872641866823 2.299e-05 deg
peri 100.8539107222052 3.0852e-05 deg
M 144.8655391847653 2.049e-05 deg
tp 2458387.841600044514
(2018-Sep-26.34160004)
8.5248e-05 TDB
period 1522.494757726133
4.17
1.5772e-05
4.318e-08
d
yr
n .2364540161292017 2.4496e-09 deg/d
Q 2.877103732693604 1.987e-08 au
  Orbit Determination Parameters
   # obs. used (total)      432  
   data-arc span      6859 days (18.78 yr)  
   first obs. used      2001-07-13  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55852  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 23:53:41  

Additional Information
 Earth MOID = 1.34602 au 
 Jupiter MOID = 2.61107 au 
 T_jup = 3.377 
[ 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 15.9   n/a MPO502885  

146331 (2001 NO20)          Discovered 2001-Jul-13 by NEAT at Palomar
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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