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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0958633288345583 5.1089e-08  
a 2.521282322684377 1.958e-08 au
q 2.279583806300125 1.2819e-07 au
i 4.23862036383187 5.336e-06 deg
node 161.5716327653249 6.4884e-05 deg
peri 290.3693260843519 6.9187e-05 deg
M 40.70079075457463 2.5213e-05 deg
tp 2458835.177870246992
(2019-Dec-17.67787025)
0.00010212 TDB
period 1462.280353960778
4.00
1.7034e-05
4.664e-08
d
yr
n .2461908204024575 2.8679e-09 deg/d
Q 2.762980839068628 2.1457e-08 au
  Orbit Determination Parameters
   # obs. used (total)      320  
   data-arc span      7330 days (20.07 yr)  
   first obs. used      2000-01-05  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52353  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:23:29  

Additional Information
 Earth MOID = 1.30039 au 
 Jupiter MOID = 2.38013 au 
 T_jup = 3.446 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457049.5 (2015-Jan-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09444273117237176 5.1144e-08  
q 2.283346977684245 1.2814e-07 au
tp 2457373.489249622838
(2015-Dec-16.98924962)
0.00010286 TDB
node 161.6028161878151 6.4822e-05 deg
peri 290.5293453065316 6.927e-05 deg
i 4.239174227465201 5.3398e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      320  
   data-arc span      7330 days (20.07 yr)  
   first obs. used      2000-01-05  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52353  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:23:29  

Additional Information
 Jupiter MOID = 2.38013 au 
 T_jup = 3.446 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.615721311988633E-15 -6.491548548954168E-15 1.13191032271595E-12 -1.011036210265118E-14 3.402938629349174E-13 -1.543683905770579E-15
q -6.491548548954168E-15 1.642069798843753E-14 -2.902265644656355E-12 2.36474167925782E-14 -8.816922281502692E-13 4.288138760887307E-15
tp 1.13191032271595E-12 -2.902265644656355E-12 1.057955754514859E-8 4.474043969570077E-11 2.530641179969444E-9 -3.258352820453419E-12
node -1.011036210265118E-14 2.36474167925782E-14 4.474043969570077E-11 4.201937601055004E-9 -4.179539114880598E-9 -9.784427203356687E-11
peri 3.402938629349174E-13 -8.816922281502692E-13 2.530641179969444E-9 -4.179539114880598E-9 4.798284957130454E-9 9.674808515417883E-11
i -1.543683905770579E-15 4.288138760887307E-15 -3.258352820453419E-12 -9.784427203356687E-11 9.674808515417883E-11 2.85134441204899E-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 15.9   n/a MPO450015  

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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2054-Dec-08 22:25 00:26 Psych 0.0320981804656588 0.0320967006908928 0.0320996609561986 1.27775649433048 1.27775619932866 2471610.434078842 25.9803491855888 422.932771570138 60.160678113401 84.3957406618436 78754.0540006646 T 17 CATAB v2.0f-lin.ifort 2020-Feb-25 03:23:43 2020-Feb-25 03:23

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