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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 
[ 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 15.4   n/a MPO437717  

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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2000-Aug-16 15:58 00:02 Jupiter 1.85073130703319 1.85072913691436 1.85073347715393 8.77132110818236 8.7189870856622 2451773.165500954 1.51543453476514 380.966718056511 104.074612051501 85.6331982777419 1427016.76487346 T 14 CATAB v2.0f-lin.ifort 2020-May-22 03:53:22 2020-May-22 03:53
2012-Feb-10 15:39 < 00:01 Jupiter 1.75231131899121 1.7523095769929 1.75231306099102 8.77687994494281 8.72163245457955 2455968.151914412 0.52775295410314 192.308755881578 75.6172595580807 -76.5640771723181 1424435.4014857 T 14 CATAB v2.0f-lin.ifort 2020-May-22 03:53:22 2020-May-22 03:53
2023-Aug-08 04:55 < 00:01 Jupiter 1.81775272556424 1.81775097320379 1.81775447792562 8.74769907840961 8.69426790817902 2460164.705021083 0.744841393626461 216.493581003067 81.3122209937808 -81.591225538299 1389891.04632494 T 14 CATAB v2.0f-lin.ifort 2020-May-22 03:53:22 2020-May-22 03:53

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