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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457067.5 (2015-Feb-14.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09443890946868401 5.1141e-08  
q 2.283315824487711 1.2809e-07 au
tp 2457373.523867955684
(2015-Dec-17.02386796)
0.00010224 TDB
node 161.6029650954131 6.4726e-05 deg
peri 290.5395567665959 6.9142e-05 deg
i 4.239201377385541 5.3286e-06 deg
  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
 Jupiter MOID = 2.38049 au 
 T_jup = 3.446 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.615376708407922E-15 -6.489270278543199E-15 1.138203620021582E-12 -9.854510611567802E-15 3.413187692677224E-13 -1.525018039404679E-15
q -6.489270278543199E-15 1.640703193390214E-14 -2.941463316014085E-12 2.288740190607348E-14 -8.889900636288675E-13 4.238117187881791E-15
tp 1.138203620021582E-12 -2.941463316014085E-12 1.045267025479847E-8 4.425235073941027E-11 2.504859073264833E-9 -3.262417234456284E-12
node -9.854510611567802E-15 2.288740190607348E-14 4.425235073941027E-11 4.189393837054998E-9 -4.167123127992253E-9 -9.902654491537488E-11
peri 3.413187692677224E-13 -8.889900636288675E-13 2.504859073264833E-9 -4.167123127992253E-9 4.780559779178797E-9 9.792676833835637E-11
i -1.525018039404679E-15 4.238117187881791E-15 -3.262417234456284E-12 -9.902654491537488E-11 9.792676833835637E-11 2.839404933990837E-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 16.07   n/a E2021B55  

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

[ hide close-approach data ]
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 18 CATAB v2.0f-lin.ifort 2020-Nov-12 03:41:47 2020-Nov-12 03:41

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