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442257 (2011 PF8)
Classification: Main-belt Asteroid          SPK-ID: 2442257
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .272017612791805 2.8914e-07  
a 2.574235870740088 1.0431e-07 au
q 1.873998374418336 8.1191e-07 au
i 4.548689910744166 1.4316e-05 deg
node 321.2663064874295 5.1862e-05 deg
peri 333.1758891722217 0.00015929 deg
M 70.45953110700431 6.7027e-05 deg
tp 2458705.237575636779
(2019-Aug-09.73757564)		 0.00029581 TDB
period 1508.588988611551
4.13		 9.1698e-05
2.511e-07		 d
yr
n .2386335858989204 1.4505e-08 deg/d
Q 3.27447336706184 1.3269e-07 au
   Orbit Determination Parameters
   # obs. used (total)      155  
   data-arc span      4376 days (11.98 yr)  
   first obs. used      2003-10-17  
   last obs. used      2015-10-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44351  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:40:28  

Additional Information
 Earth MOID = .85939 au 
 Jupiter MOID = 1.95384 au 
 T_jup = 3.371 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456545.5 (2013-Sep-10.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2710334632706788 2.9094e-07  
q 1.877611166265481 8.2179e-07 au
tp 2457197.710820680602
(2015-Jun-24.21082068)		 0.00038278 TDB
node 321.3197991030004 5.1881e-05 deg
peri 333.2717257730434 0.00016026 deg
i 4.546169837057998 1.4306e-05 deg
   Orbit Determination Parameters
   # obs. used (total)      155  
   data-arc span      4376 days (11.98 yr)  
   first obs. used      2003-10-17  
   last obs. used      2015-10-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44351  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:40:28  

Additional Information
 Jupiter MOID = 1.95384 au 
 T_jup = 3.371 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.464606015463104E-14 -2.387799887616981E-13 7.646785120023272E-11 -3.035042179784595E-13 2.819543324594741E-11 -8.059106702624032E-13
q -2.387799887616981E-13 6.753313135556112E-13 -2.26319384786998E-10 8.257740245888209E-13 -8.403489446439791E-11 2.330722798546118E-12
tp 7.646785120023272E-11 -2.26319384786998E-10 1.46517123669692E-7 -3.366341714572914E-11 5.792228976069955E-8 -1.116190501012533E-9
node -3.035042179784595E-13 8.257740245888209E-13 -3.366341714572914E-11 2.691597787277229E-9 -2.68017821278893E-9 2.269837800145928E-10
peri 2.819543324594741E-11 -8.403489446439791E-11 5.792228976069955E-8 -2.68017821278893E-9 2.568408484195828E-8 -6.559116900000158E-10
i -8.059106702624032E-13 2.330722798546118E-12 -1.116190501012533E-9 2.269837800145928E-10 -6.559116900000158E-10 2.046477329160925E-10

[ 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 17.9   n/a MPO349187  

442257 (2011 PF8)          Discovered 2007-Sep-15 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2011 PF8 = 2007 RU269 = 2011 PO8 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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