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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .007859390209849298 5.7099e-08  
a 3.227858438550654 7.7435e-08 au
q 3.20248943953993 2.1323e-07 au
i 31.10375743945763 1.445e-05 deg
node 224.7201923935857 1.2486e-05 deg
peri 270.791823908721 0.0010532 deg
M 65.27924489851064 0.0010532 deg
tp 2458616.401361042248
(2019-May-12.90136104)
0.0062016 TDB
period 2118.21552531386
5.80
7.6223e-05
2.087e-07
d
yr
n .1699543770205622 6.1157e-09 deg/d
Q 3.253227437561379 7.8044e-08 au
  Orbit Determination Parameters
   # obs. used (total)      129  
   data-arc span      6235 days (17.07 yr)  
   first obs. used      2003-05-01  
   last obs. used      2020-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57144  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:52:19  

Additional Information
 Earth MOID = 2.21827 au 
 Jupiter MOID = 1.76237 au 
 T_jup = 2.961 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457519.5 (2016-May-11.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .009107248445501596 5.7172e-08  
q 3.200052455216764 2.1337e-07 au
tp 2456494.342758380232
(2013-Jul-20.84275838)
0.0053835 TDB
node 224.7402739524824 1.2485e-05 deg
peri 270.4856950208458 0.00090879 deg
i 31.09957209095567 1.4448e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      129  
   data-arc span      6235 days (17.07 yr)  
   first obs. used      2003-05-01  
   last obs. used      2020-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57144  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:52:19  

Additional Information
 Jupiter MOID = 1.76237 au 
 T_jup = 2.961 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.268624533725808E-15 -1.141339836060493E-14 -4.157991544628686E-11 -5.698493421651594E-15 -7.192989223803811E-12 1.834424220644859E-14
q -1.141339836060493E-14 4.552553578371077E-14 -1.73669904059488E-11 -6.805166571356498E-15 -1.960435630292622E-12 -2.02173355340293E-14
tp -4.157991544628686E-11 -1.73669904059488E-11 2.898259734246966E-5 1.796952990585216E-9 4.891973168196222E-6 -6.141441726894158E-9
node -5.698493421651594E-15 -6.805166571356498E-15 1.796952990585216E-9 1.558824626375941E-10 1.692916673899008E-10 7.096707940751115E-11
peri -7.192989223803811E-12 -1.960435630292622E-12 4.891973168196222E-6 1.692916673899008E-10 8.258941096996571E-7 -1.097654569213015E-9
i 1.834424220644859E-14 -2.02173355340293E-14 -6.141441726894158E-9 7.096707940751115E-11 -1.097654569213015E-9 2.087577727833876E-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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