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160397 (2004 PJ85)
Classification: Main-belt Asteroid          SPK-ID: 2160397
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2387861306633496 3.5737e-08  
a 2.224085076732304 1.0553e-08 au
q 1.693004406993298 8.4168e-08 au
i 7.205088099589121 4.0213e-06 deg
node 10.90741823167473 2.8169e-05 deg
peri 302.2774555000258 2.9525e-05 deg
M 2.28041912809308 8.2271e-06 deg
tp 2459192.825719031887
(2020-Dec-09.32571903)
2.7669e-05 TDB
period 1211.505865077901
3.32
8.6227e-06
2.361e-08
d
yr
n .2971508519910068 2.1149e-09 deg/d
Q 2.75516574647131 1.3073e-08 au
  Orbit Determination Parameters
   # obs. used (total)      633  
   data-arc span      9980 days (27.32 yr)  
   first obs. used      1993-02-26  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52729  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:01:11  

Additional Information
 Earth MOID = .691184 au 
 Jupiter MOID = 2.56981 au 
 T_jup = 3.599 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457719.5 (2016-Nov-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2381630051825649 3.5759e-08  
q 1.694624517643948 8.412e-08 au
tp 2457981.459819656572
(2017-Aug-15.95981966)
2.6386e-05 TDB
node 10.93940066980421 2.8163e-05 deg
peri 302.2447132868185 2.9528e-05 deg
i 7.205138692350018 4.0213e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      633  
   data-arc span      9980 days (27.32 yr)  
   first obs. used      1993-02-26  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52729  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:01:11  

Additional Information
 Jupiter MOID = 2.56981 au 
 T_jup = 3.599 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.278728313825457E-15 -2.998533531436916E-15 6.049568140813493E-14 -8.36018032267692E-15 6.807480413516405E-14 -5.363684733276572E-15
q -2.998533531436916E-15 7.076258463476198E-15 -1.331967009112834E-13 1.873003500259242E-14 -1.594850553734311E-13 1.288114186388531E-14
tp 6.049568140813493E-14 -1.331967009112834E-13 6.962228885766926E-10 -4.329446004674507E-12 2.401921441183414E-10 1.285911855473926E-12
node -8.36018032267692E-15 1.873003500259242E-14 -4.329446004674507E-12 7.931595208539716E-10 -7.881468693591833E-10 1.282072874680095E-11
peri 6.807480413516405E-14 -1.594850553734311E-13 2.401921441183414E-10 -7.881468693591833E-10 8.718835263385159E-10 -1.247651897235814E-11
i -5.363684733276572E-15 1.288114186388531E-14 1.285911855473926E-12 1.282072874680095E-11 -1.247651897235814E-11 1.617103804686768E-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 16.61   n/a E2021B55  

160397 (2004 PJ85)          Discovered 2004-Aug-10 by LINEAR at Socorro
Reference: 20070730/Numbers.arcLast Updated: 2007-08-06

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