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277939 (2006 PO18)
Classification: Outer Main-belt Asteroid          SPK-ID: 2277939
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08539824832904667 4.624e-08  
a 3.241668448246755 3.4638e-08 au
q 2.964835641102944 1.3975e-07 au
i 10.06885538956791 4.8831e-06 deg
node 125.893030890732 3.1527e-05 deg
peri 197.3480975601412 4.5694e-05 deg
M 118.011663797755 3.3118e-05 deg
tp 2458301.666444012669
(2018-Jul-02.16644401)
0.00019595 TDB
period 2131.823855874025
5.84
3.4169e-05
9.355e-08
d
yr
n .1688694865704108 2.7066e-09 deg/d
Q 3.518501255390567 3.7596e-08 au
  Orbit Determination Parameters
   # obs. used (total)      285  
   data-arc span      7878 days (21.57 yr)  
   first obs. used      1999-03-21  
   last obs. used      2020-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5359  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 21:14:49  

Additional Information
 Earth MOID = 1.95369 au 
 Jupiter MOID = 1.77419 au 
 T_jup = 3.154 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457447.5 (2016-Feb-29.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08473569535713399 4.6479e-08  
q 2.971681141728989 1.3952e-07 au
tp 2458291.062406628717
(2018-Jun-21.56240663)
0.00019751 TDB
node 126.0367444627295 3.1461e-05 deg
peri 195.0874490294931 4.5791e-05 deg
i 10.07514120063949 4.8856e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      285  
   data-arc span      7878 days (21.57 yr)  
   first obs. used      1999-03-21  
   last obs. used      2020-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5359  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 21:14:49  

Additional Information
 Jupiter MOID = 1.77419 au 
 T_jup = 3.154 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.160299426595135E-15 -6.342033189976832E-15 9.981341152848712E-14 -1.654547995054181E-17 -5.23502217078509E-14 1.635590430563012E-15
q -6.342033189976832E-15 1.946652077240121E-14 -2.022240660625189E-13 2.537425299000995E-17 1.069862275856152E-13 -4.602271703760506E-15
tp 9.981341152848712E-14 -2.022240660625189E-13 3.901000085041947E-8 -2.912038258184709E-11 6.601207779832208E-9 -5.497056788133574E-12
node -1.654547995054181E-17 2.537425299000995E-17 -2.912038258184709E-11 9.897795971124865E-10 -9.797067047116583E-10 -9.980432900279883E-12
peri -5.23502217078509E-14 1.069862275856152E-13 6.601207779832208E-9 -9.797067047116583E-10 2.0968126980323E-9 8.87685126056924E-12
i 1.635590430563012E-15 -4.602271703760506E-15 -5.497056788133574E-12 -9.980432900279883E-12 8.87685126056924E-12 2.386916966316532E-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 15.2   n/a MPO418478  

277939 (2006 PO18)          Discovered 2006-Aug-13 by NEAT at Palomar
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

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