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305917 (2009 FK61)
Classification: Main-belt Asteroid          SPK-ID: 2305917
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01561103133558897 4.5793e-07  
a 2.923614819721319 4.6805e-08 au
q 2.877974177157457 1.3232e-06 au
i 1.564087633679672 4.9789e-05 deg
node 3.628386052274369 0.0002766 deg
peri 170.0984607459983 0.00053135 deg
M 97.88362737893648 0.00045283 deg
tp 2458504.037770617010
(2019-Jan-20.53777062)
0.0022938 TDB
period 1825.907022080145
5.00
4.3848e-05
1.2e-07
d
yr
n .1971622846325843 4.7347e-09 deg/d
Q 2.969255462285181 4.7536e-08 au
  Orbit Determination Parameters
   # obs. used (total)      69  
   data-arc span      5496 days (15.05 yr)  
   first obs. used      2004-03-19  
   last obs. used      2019-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66001  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:14:09  

Additional Information
 Earth MOID = 1.88037 au 
 Jupiter MOID = 1.98997 au 
 T_jup = 3.278 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456994.5 (2014-Dec-03.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01540885876227335 4.361e-07  
q 2.875225977044565 1.2603e-06 au
tp 2456637.025004673125
(2013-Dec-10.52500467)
0.0034506 TDB
node 3.718903910590465 0.00027635 deg
peri 161.2690911506891 0.00073827 deg
i 1.565367460809842 4.9815e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      69  
   data-arc span      5496 days (15.05 yr)  
   first obs. used      2004-03-19  
   last obs. used      2019-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66001  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:14:09  

Additional Information
 Jupiter MOID = 1.98997 au 
 T_jup = 3.278 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.901833311284087E-13 -5.492984085520057E-13 1.389779657661036E-9 -4.321076424665337E-13 2.756206745522168E-10 -3.460589883150643E-14
q -5.492984085520057E-13 1.588419184590809E-12 -4.020083746658649E-9 1.278295012502306E-12 -7.972218951802398E-10 1.172949903843767E-13
tp 1.389779657661036E-9 -4.020083746658649E-9 1.190695946445941E-5 -3.300177473721403E-9 2.362324170160118E-6 -3.223374975921339E-10
node -4.321076424665337E-13 1.278295012502306E-12 -3.300177473721403E-9 7.636778274771798E-8 -7.698835454048697E-8 4.087475848063951E-9
peri 2.756206745522168E-10 -7.972218951802398E-10 2.362324170160118E-6 -7.698835454048697E-8 5.450369923975403E-7 -4.147680173435651E-9
i -3.460589883150643E-14 1.172949903843767E-13 -3.223374975921339E-10 4.087475848063951E-9 -4.147680173435651E-9 2.481540767621764E-9

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 17.1   n/a MPO471211  

305917 (2009 FK61)          Discovered 2009-Mar-21 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2009 FK61 = 2004 FX98 = 2006 RC71 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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