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215281 (2001 QF121)
Classification: Main-belt Asteroid          SPK-ID: 2215281
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1813872233924906 5.1543e-08  
a 2.635068689650461 1.5207e-08 au
q 2.157100896586275 1.3714e-07 au
i 14.1377456050573 5.6326e-06 deg
node 129.1838318919167 2.0125e-05 deg
peri 162.3508888618686 2.4515e-05 deg
M 162.1769904227019 1.4393e-05 deg
tp 2458296.661411152947
(2018-Jun-27.16141115)
6.0675e-05 TDB
period 1562.378801854188
4.28
1.3525e-05
3.703e-08
d
yr
n .2304178727801234 1.9946e-09 deg/d
Q 3.113036482714647 1.7965e-08 au
  Orbit Determination Parameters
   # obs. used (total)      255  
   data-arc span      6785 days (18.58 yr)  
   first obs. used      2001-06-28  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67921  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:21:23  

Additional Information
 Earth MOID = 1.14516 au 
 Jupiter MOID = 2.13553 au 
 T_jup = 3.332 
[ 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 16.3   n/a MPO454546  

215281 (2001 QF121)          Discovered 2001-Aug-19 by LINEAR at Socorro
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

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