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154242 (2002 KR2)
Classification: Main-belt Asteroid          SPK-ID: 2154242
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2778065408715388 4.1982e-08  
a 3.139410909769514 2.0764e-08 au
q 2.267262024552074 1.3519e-07 au
i 2.090610860562836 5.8386e-06 deg
node 204.6372043114499 0.00013875 deg
peri 73.71083160821567 0.00013952 deg
M 50.89051325998135 1.0178e-05 deg
tp 2458713.286399152607
(2019-Aug-17.78639915)
5.78e-05 TDB
period 2031.751886188373
5.56
2.0157e-05
5.519e-08
d
yr
n .1771869894386419 1.7579e-09 deg/d
Q 4.011559794986954 2.6533e-08 au
  Orbit Determination Parameters
   # obs. used (total)      315  
   data-arc span      7611 days (20.84 yr)  
   first obs. used      1998-10-18  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58755  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:37:20  

Additional Information
 Earth MOID = 1.25194 au 
 Jupiter MOID = 1.15082 au 
 T_jup = 3.149 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456992.5 (2014-Dec-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2772590907553475 4.1918e-08  
q 2.270416376401857 1.3519e-07 au
tp 2456683.045712135585
(2014-Jan-25.54571214)
6.5117e-05 TDB
node 204.6483008014414 0.00013868 deg
peri 74.09966690754557 0.00013946 deg
i 2.090156112534105 5.8399e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      315  
   data-arc span      7611 days (20.84 yr)  
   first obs. used      1998-10-18  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58755  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:37:20  

Additional Information
 Jupiter MOID = 1.15082 au 
 T_jup = 3.149 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.757093191089429E-15 -5.631537647877478E-15 1.99469852004437E-14 2.045199064913996E-14 1.929264753165271E-14 -1.993890609157523E-15
q -5.631537647877478E-15 1.827592540999164E-14 -5.390204125090284E-13 -6.328369967447013E-14 -1.577820387387126E-13 6.726426393394931E-15
tp 1.99469852004437E-14 -5.390204125090284E-13 4.240259207059253E-9 -3.372725623015214E-11 9.829557537619535E-10 3.983219702208415E-13
node 2.045199064913996E-14 -6.328369967447013E-14 -3.372725623015214E-11 1.923262712423495E-8 -1.922588902608108E-8 1.187242003069898E-11
peri 1.929264753165271E-14 -1.577820387387126E-13 9.829557537619535E-10 -1.922588902608108E-8 1.944856624478735E-8 -1.182484758148543E-11
i -1.993890609157523E-15 6.726426393394931E-15 3.983219702208415E-13 1.187242003069898E-11 -1.182484758148543E-11 3.410390958746896E-11

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 15.7   n/a MPO436780  

154242 (2002 KR2)          Discovered 2002-May-18 by NEAT at Palomar
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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