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JPL Small-Body Database Browser
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91526 (1999 RF189)
Classification: Main-belt Asteroid          SPK-ID: 2091526
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1959636180577633 5.0375e-08  
a 2.87954674503225 1.7453e-08 au
q 2.315260346509275 1.4527e-07 au
i 9.971868089639763 5.4858e-06 deg
node 346.638279444571 3.167e-05 deg
peri 3.892050765595236 3.4628e-05 deg
M 91.17808769740671 1.6484e-05 deg
tp 2458548.464435312393
(2019-Mar-05.96443531)
8.0077e-05 TDB
period 1784.779735977802
4.89
1.6227e-05
4.443e-08
d
yr
n .2017055621727865 1.8338e-09 deg/d
Q 3.443833143555226 2.0873e-08 au
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      21670 days (59.33 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54552  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:32:48  

Additional Information
 Earth MOID = 1.30938 au 
 Jupiter MOID = 1.98803 au 
 T_jup = 3.244 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457174.5 (2015-Jun-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .198202661521581 5.1035e-08  
q 2.306284673218804 1.4766e-07 au
tp 2456756.865241790630
(2014-Apr-09.36524179)
7.2732e-05 TDB
node 346.8006459505845 3.1508e-05 deg
peri 2.513511671178387 3.4389e-05 deg
i 10.00954898927678 5.4975e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      21670 days (59.33 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54552  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:32:48  

Additional Information
 Jupiter MOID = 1.98803 au 
 T_jup = 3.244 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.60458954836339E-15 -7.502013174844622E-15 6.92299872633298E-13 1.273378827764399E-14 5.068460209759625E-14 -4.338526323067289E-15
q -7.502013174844622E-15 2.180469801955686E-14 -1.756946346873383E-12 -3.768996774195224E-14 -9.150865328144453E-14 1.271069098735222E-14
tp 6.92299872633298E-13 -1.756946346873383E-12 5.290008739679734E-9 9.282574503199797E-12 1.03589939483525E-9 -4.56851660507394E-12
node 1.273378827764399E-14 -3.768996774195224E-14 9.282574503199797E-12 9.927517654746913E-10 -9.75432217902966E-10 8.785603168161682E-12
peri 5.068460209759625E-14 -9.150865328144453E-14 1.03589939483525E-9 -9.75432217902966E-10 1.182599080545083E-9 -9.510664116605984E-12
i -4.338526323067289E-15 1.271069098735222E-14 -4.56851660507394E-12 8.785603168161682E-12 -9.510664116605984E-12 3.022302957123047E-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 15.7   n/a MPO453355  

91526 (1999 RF189)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RF189 = 4167 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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