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146421 (2001 QP220)
Classification: Main-belt Asteroid          SPK-ID: 2146421
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1086496969510616 5.2327e-08  
a 2.563422224637443 2.6737e-08 au
q 2.284907176772969 1.4457e-07 au
i 14.41541570922315 7.8103e-06 deg
node 297.8830822912964 1.7803e-05 deg
peri 309.3482394971061 6.7761e-05 deg
M 320.943336358802 7.6971e-05 deg
tp 2459363.137723089936
(2021-May-28.63772309)
0.0003225 TDB
period 1499.093236694629
4.10
2.3454e-05
6.421e-08
d
yr
n .2401451698853427 3.7571e-09 deg/d
Q 2.841937272501917 2.9642e-08 au
  Orbit Determination Parameters
   # obs. used (total)      602  
   data-arc span      7351 days (20.13 yr)  
   first obs. used      2000-04-06  
   last obs. used      2020-05-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54077  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:01:05  

Additional Information
 Earth MOID = 1.29446 au 
 Jupiter MOID = 2.34241 au 
 T_jup = 3.381 
[ 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 15.63   n/a E2021B55  

146421 (2001 QP220)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
Alternate Designations
 2001 QP220 = 2004 BN95 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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