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146420 (2001 QA220)
Classification: Main-belt Asteroid          SPK-ID: 2146420
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 .07307590218699064 4.9615e-08  
a 2.561785599775144 1.486e-08 au
q 2.374580805861934 1.2867e-07 au
i 14.37671831065147 7.0336e-06 deg
node 313.4451873647075 1.4013e-05 deg
peri 137.9792883734599 7.0565e-05 deg
M 145.030504111278 6.3605e-05 deg
tp 2458397.149811487626
(2018-Oct-05.64981149)
0.00026504 TDB
period 1497.657814784938
4.10
1.3031e-05
3.568e-08
d
yr
n .2403753357049024 2.0915e-09 deg/d
Q 2.748990393688354 1.5946e-08 au
  Orbit Determination Parameters
   # obs. used (total)      827  
   data-arc span      6432 days (17.61 yr)  
   first obs. used      2001-08-23  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54879  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:37:17  

Additional Information
 Earth MOID = 1.40756 au 
 Jupiter MOID = 2.37176 au 
 T_jup = 3.387 
[ 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 15.2   n/a MPO273257  

146420 (2001 QA220)          Discovered 2001-Aug-23 by LINEAR at Socorro
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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