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308307 (2005 KT9)
Classification: Main-belt Asteroid          SPK-ID: 2308307
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1396735063687655 7.5156e-08  
a 2.625567337121582 2.9552e-08 au
q 2.258845140938508 1.8723e-07 au
i 12.85837298333827 7.3547e-06 deg
node 61.82400892861114 2.2242e-05 deg
peri 173.2104422841377 2.9866e-05 deg
M 198.7006312270992 2.5658e-05 deg
tp 2459696.746997621196
(2022-Apr-27.24699762)
0.00011774 TDB
period 1553.936144018816
4.25
2.6235e-05
7.183e-08
d
yr
n .2316697512865374 3.9113e-09 deg/d
Q 2.992289533304656 3.3679e-08 au
  Orbit Determination Parameters
   # obs. used (total)      200  
   data-arc span      5299 days (14.51 yr)  
   first obs. used      2005-05-22  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60417  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 21:22:42  

Additional Information
 Earth MOID = 1.24758 au 
 Jupiter MOID = 2.01252 au 
 T_jup = 3.353 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457572.5 (2016-Jul-03.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1402638784668872 7.5021e-08  
q 2.256397775220936 1.8687e-07 au
tp 2458144.044457502862
(2018-Jan-25.54445750)
0.00010276 TDB
node 61.83597495260872 2.2254e-05 deg
peri 173.4790001829093 2.9816e-05 deg
i 12.85718170859162 7.3542e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      200  
   data-arc span      5299 days (14.51 yr)  
   first obs. used      2005-05-22  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60417  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 21:22:42  

Additional Information
 Jupiter MOID = 2.01252 au 
 T_jup = 3.353 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.628222282620863E-15 -1.391564803110771E-14 2.577012650065448E-12 3.308994048931711E-14 2.936648162721295E-13 8.717370364522695E-16
q -1.391564803110771E-14 3.49192298373369E-14 -5.579804658070644E-12 -7.98686748839873E-14 -6.040893483353839E-13 -1.222131371521782E-15
tp 2.577012650065448E-12 -5.579804658070644E-12 1.055875227314479E-8 3.50350247607477E-11 2.030705316018056E-9 -8.587420862449047E-12
node 3.308994048931711E-14 -7.98686748839873E-14 3.50350247607477E-11 4.952393955790584E-10 -4.767596577299045E-10 -2.981620315698742E-11
peri 2.936648162721295E-13 -6.040893483353839E-13 2.030705316018056E-9 -4.767596577299045E-10 8.889978055939008E-10 2.722735968861483E-11
i 8.717370364522695E-16 -1.222131371521782E-15 -8.587420862449047E-12 -2.981620315698742E-11 2.722735968861483E-11 5.408408222699174E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4   n/a MPO413269  

308307 (2005 KT9)          Discovered 2005-May-29 by Broughton, J. at Reedy Creek
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

Alternate Designations
 2005 KT9 = 2009 HC85 = 2010 LY79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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