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152680 (1998 KJ9)
Classification: Apollo [NEO, PHA]          SPK-ID: 2152680
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6397349375750881 5.1593e-08  
a 1.447719076976776 4.5728e-09 au
q .5215626036407741 7.391e-08 au
i 10.93089230803532 1.1386e-05 deg
node 98.58114787568132 3.8186e-05 deg
peri 260.0610677382592 3.6864e-05 deg
M 304.5994876529081 2.5716e-05 deg
tp 2459298.412052153496
(2021-Mar-24.91205215)
4.5898e-05 TDB
period 636.2457183504538
1.74
3.0145e-06
8.253e-09
d
yr
n .5658191318494761 2.6808e-09 deg/d
Q 2.373875550312779 7.4982e-09 au
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      10299 days (28.20 yr)  
   first obs. used      1990-01-01  
   last obs. used      2018-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:28:10  

Additional Information
 Earth MOID = .00572161 au 
 Jupiter MOID = 3.13662 au 
 T_jup = 4.390 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455117.5 (2009-Oct-13.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6397948459253112 5.1646e-08  
q .5216009335078483 7.3907e-08 au
tp 2454843.947936364057
(2009-Jan-12.44793636)
2.4032e-05 TDB
node 98.73676107261531 3.8163e-05 deg
peri 259.8886376350661 3.684e-05 deg
i 10.93338146506264 1.1385e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      10299 days (28.20 yr)  
   first obs. used      1990-01-01  
   last obs. used      2018-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:28:10  

Additional Information
 Jupiter MOID = 3.13662 au 
 T_jup = 4.390 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.667334675781245E-15 -3.815853840143784E-15 2.966603616438477E-13 -2.042338530983985E-13 4.301330822684736E-13 -2.270997303094396E-14
q -3.815853840143784E-15 5.462235174778031E-15 -3.853701470961444E-13 2.896295705220015E-13 -6.113120110090293E-13 3.174161189175589E-14
tp 2.966603616438477E-13 -3.853701470961444E-13 5.775388355484378E-10 1.171498682521879E-10 -2.468621993693854E-11 2.905628106065653E-11
node -2.042338530983985E-13 2.896295705220015E-13 1.171498682521879E-10 1.456383388749234E-9 -1.376152156121749E-9 -8.854901366150198E-11
peri 4.301330822684736E-13 -6.113120110090293E-13 -2.468621993693854E-11 -1.376152156121749E-9 1.35714952365682E-9 1.031052338371055E-10
i -2.270997303094396E-14 3.174161189175589E-14 2.905628106065653E-11 -8.854901366150198E-11 1.031052338371055E-10 1.2962444809233E-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 19.4   n/a MPO192326  

152680 (1998 KJ9)          Discovered 1998-May-27 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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