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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2723287317146893 2.8875e-07  
a 2.575051593760004 1.0591e-07 au
q 1.873791059131453 8.1225e-07 au
i 4.54788427341599 1.4394e-05 deg
node 321.2771728399603 5.1986e-05 deg
peri 333.1722176236192 0.00015911 deg
M 335.0119787715548 7.1701e-05 deg
tp 2458705.262702907552
(2019-Aug-09.76270291)
0.00029516 TDB
period 1509.306107191325
4.13
9.3119e-05
2.549e-07
d
yr
n .2385202036119271 1.4716e-08 deg/d
Q 3.276312128388554 1.3476e-07 au
  Orbit Determination Parameters
   # obs. used (total)      151  
   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      .47199  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:30:24  

Additional Information
 Earth MOID = .858479 au 
 Jupiter MOID = 1.95002 au 
 T_jup = 3.370 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456553.5 (2013-Sep-18.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2710636400990441 2.9095e-07  
q 1.877484481224037 8.2165e-07 au
tp 2457197.696734479287
(2015-Jun-24.19673448)
0.00038275 TDB
node 321.3194728138974 5.199e-05 deg
peri 333.2745430665272 0.00016028 deg
i 4.546288790359312 1.4387e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      151  
   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      .47199  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:30:24  

Additional Information
 Jupiter MOID = 1.95002 au 
 T_jup = 3.370 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.465322670471711E-14 -2.387501453743827E-13 7.640224858397495E-11 -2.997802961656719E-13 2.816544072839869E-11 -8.073269294051803E-13
q -2.387501453743827E-13 6.75106717347002E-13 -2.260846020516489E-10 8.148986189217805E-13 -8.393104978079605E-11 2.334412774653042E-12
tp 7.640224858397495E-11 -2.260846020516489E-10 1.464964033234939E-7 -2.768763598932405E-11 5.791075546514555E-8 -1.118187290805845E-9
node -2.997802961656719E-13 8.148986189217805E-13 -2.768763598932405E-11 2.702953806333993E-9 -2.689188560355827E-9 2.218178254313793E-10
peri 2.816544072839869E-11 -8.393104978079605E-11 5.791075546514555E-8 -2.689188560355827E-9 2.56895825908013E-8 -6.515482764473697E-10
i -8.073269294051803E-13 2.334412774653042E-12 -1.118187290805845E-9 2.218178254313793E-10 -6.515482764473697E-10 2.069739648839281E-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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