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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 | 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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09585393860231496 5.1059e-08  
a 2.520860338378077 1.9466e-08 au
q 2.279225946278173 1.2807e-07 au
i 4.238992696164205 5.3251e-06 deg
node 161.5715741894593 6.4782e-05 deg
peri 290.2631352690654 6.9063e-05 deg
M 90.04589381779999 2.5109e-05 deg
tp 2458834.835316441973
(2019-Dec-17.33531644)
0.00010133 TDB
period 1461.913258890522
4.00
1.6934e-05
4.636e-08
d
yr
n .2462526403743078 2.8524e-09 deg/d
Q 2.76249473047798 2.1332e-08 au
  Orbit Determination Parameters
   # obs. used (total)      327  
   data-arc span      7384 days (20.22 yr)  
   first obs. used      2000-01-05  
   last obs. used      2020-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52328  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 03:41:46  

Additional Information
 Earth MOID = 1.29978 au 
 Jupiter MOID = 2.38049 au 
 T_jup = 3.446 
[ 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 16.07   n/a E2021B55  

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

[ show close-approach data ]
Alternate Designations
 2002 PJ178 = 2005 HA2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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