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441815 (2009 KU23)
Classification: Outer Main-belt Asteroid          SPK-ID: 2441815
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .007859403381712583 6.4587e-08  
a 3.227858425210194 8.3882e-08 au
q 3.202489383787407 2.4942e-07 au
i 31.10376094678282 1.61e-05 deg
node 224.7201950140074 1.3824e-05 deg
peri 270.7914770771274 0.0012952 deg
M 65.27959289415318 0.0012996 deg
tp 2458616.399315840728
(2019-May-12.89931584)
0.0076474 TDB
period 2118.215512182257
5.80
8.2569e-05
2.261e-07
d
yr
n .1699543780741724 6.6249e-09 deg/d
Q 3.25322746663298 8.4541e-08 au
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      6203 days (16.98 yr)  
   first obs. used      2003-05-01  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58295  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 03:53:21  

Additional Information
 Earth MOID = 2.21827 au 
 Jupiter MOID = 1.76237 au 
 T_jup = 2.961 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457403.5 (2016-Jan-16.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .009214517185429439 6.5175e-08  
q 3.199343893637497 2.5111e-07 au
tp 2456493.067051388321
(2013-Jul-19.56705139)
0.0065283 TDB
node 224.7438765975817 1.3823e-05 deg
peri 270.2390227972384 0.0011037 deg
i 31.10009820367515 1.6098e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      6203 days (16.98 yr)  
   first obs. used      2003-05-01  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58295  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 03:53:21  

Additional Information
 Jupiter MOID = 1.76237 au 
 T_jup = 2.961 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.247726301943736E-15 -1.555070279382493E-14 -1.61508445899934E-10 -5.545492326971083E-15 -2.751654978211336E-11 4.663249555334252E-14
q -1.555070279382493E-14 6.305576045306539E-14 4.920328263696147E-10 1.470068981977725E-15 8.435482627702577E-11 -1.289774886132193E-13
tp -1.61508445899934E-10 4.920328263696147E-10 4.26191064315419E-5 5.454125666851121E-10 7.204891878324915E-6 -1.082027070522915E-8
node -5.545492326971083E-15 1.470068981977725E-15 5.454125666851121E-10 1.910830983708619E-10 -7.196198104838049E-11 1.127642076069423E-10
peri -2.751654978211336E-11 8.435482627702577E-11 7.204891878324915E-6 -7.196198104838049E-11 1.218216495021445E-6 -1.925401021018059E-9
i 4.663249555334252E-14 -1.289774886132193E-13 -1.082027070522915E-8 1.127642076069423E-10 -1.925401021018059E-9 2.591611189888438E-10

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 15.4   n/a MPO437717  

441815 (2009 KU23)          Discovered 2009-Apr-30 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2009 KU23 = 2015 MH55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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