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215458 (2002 PJ178)
Classification: Main-belt Asteroid          SPK-ID: 2215458
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09587606897130667 4.483e-08  
a 2.520468235478688 1.6972e-08 au
q 2.278815649093946 1.0712e-07 au
i 4.239155459242155 4.126e-06 deg
node 161.5740078708962 5.9335e-05 deg
peri 290.1598320602951 6.3173e-05 deg
M 138.4256615994528 2.4602e-05 deg
tp 2458834.502508839288
(2019-Dec-17.00250884)
9.8033e-05 TDB
period 1461.572185967115
4.00
1.4763e-05
4.042e-08
d
yr
n .246310105964277 2.4879e-09 deg/d
Q 2.76212082186343 1.8599e-08 au
  Orbit Determination Parameters
   # obs. used (total)      406  
   data-arc span      7828 days (21.43 yr)  
   first obs. used      2000-01-05  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49368  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 09:39:04  

Additional Information
 Earth MOID = 1.29971 au 
 Jupiter MOID = 2.38109 au 
 T_jup = 3.446 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457569.5 (2016-Jun-30.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09458333536884297 4.4828e-08  
q 2.283229248999094 1.0691e-07 au
tp 2457374.225637996914
(2015-Dec-17.72563800)
9.6072e-05 TDB
node 161.6033766247055 5.9283e-05 deg
peri 290.7441043679599 6.3224e-05 deg
i 4.239409920279431 4.1279e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      406  
   data-arc span      7828 days (21.43 yr)  
   first obs. used      2000-01-05  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49368  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 09:39:04  

Additional Information
 Jupiter MOID = 2.38109 au 
 T_jup = 3.446 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.009565453190214E-15 -4.752790203061157E-15 2.770728019827058E-13 -2.048084319856213E-14 9.250923924496453E-14 4.152902847640611E-16
q -4.752790203061157E-15 1.143024438433671E-14 -4.989929811560648E-13 4.939861113538119E-14 -1.778979456051911E-13 -8.001908124815592E-16
tp 2.770728019827058E-13 -4.989929811560648E-13 9.229759524908963E-9 4.778924280061299E-11 2.133645081835329E-9 -3.049909319584116E-12
node -2.048084319856213E-14 4.939861113538119E-14 4.778924280061299E-11 3.514458306461847E-9 -3.493339039919757E-9 -1.231597591017588E-11
peri 9.250923924496453E-14 -1.778979456051911E-13 2.133645081835329E-9 -3.493339039919757E-9 3.997313759783421E-9 1.156811261831673E-11
i 4.152902847640611E-16 -8.001908124815592E-16 -3.049909319584116E-12 -1.231597591017588E-11 1.156811261831673E-11 1.703924914363676E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.10   n/a MPO638133  

215458 (2002 PJ178)          Discovered 2002-Aug-15 by NEAT at Palomar
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

Alternate Designations
 2002 PJ178 = 2005 HA2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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