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91485 (1999 RF115)
Classification: Main-belt Asteroid          SPK-ID: 2091485
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .2368549885126659 4.4062e-08  
a 2.7279297555121 1.6508e-08 au
q 2.081805984606922 1.24e-07 au
i 10.25696188734969 5.1146e-06 deg
node 150.730185909822 2.6123e-05 deg
peri 239.0828677667587 2.793e-05 deg
M 181.3019612835572 1.2402e-05 deg
tp 2459817.393586843941
(2022-Aug-25.89358684)
6.1526e-05 TDB
period 1645.690648739946
4.51
1.4938e-05
4.09e-08
d
yr
n .2187531418955566 1.9857e-09 deg/d
Q 3.374053526417277 2.0418e-08 au
  Orbit Determination Parameters
   # obs. used (total)      662  
   data-arc span      10876 days (29.78 yr)  
   first obs. used      1990-08-16  
   last obs. used      2020-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53011  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:39:43  

Additional Information
 Earth MOID = 1.10709 au 
 Jupiter MOID = 2.15174 au 
 T_jup = 3.292 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457252.5 (2015-Aug-18.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2360760004989319 4.3986e-08  
q 2.084954728022324 1.2373e-07 au
tp 2456526.022597494699
(2013-Aug-21.52259749)
4.694e-05 TDB
node 150.740535265265 2.6119e-05 deg
peri 239.3168028213915 2.7945e-05 deg
i 10.25550900852629 5.1139e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      662  
   data-arc span      10876 days (29.78 yr)  
   first obs. used      1990-08-16  
   last obs. used      2020-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53011  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:39:43  

Additional Information
 Jupiter MOID = 2.15174 au 
 T_jup = 3.292 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.934791942854086E-15 -5.416119669899394E-15 -4.851830487725792E-13 -1.277463466299433E-14 -1.015768827768719E-13 -8.42149380868593E-16
q -5.416119669899394E-15 1.530954883861537E-14 1.468591130057071E-12 3.667051434595373E-14 3.177498785781033E-13 2.877957429757547E-15
tp -4.851830487725792E-13 1.468591130057071E-12 2.203317133069691E-9 -3.173311966697478E-13 4.898670368382741E-10 -1.66825522834717E-12
node -1.277463466299433E-14 3.667051434595373E-14 -3.173311966697478E-13 6.821890327268734E-10 -6.708549816119862E-10 2.28071583352891E-11
peri -1.015768827768719E-13 3.177498785781033E-13 4.898670368382741E-10 -6.708549816119862E-10 7.809344667917032E-10 -2.27968072580498E-11
i -8.42149380868593E-16 2.877957429757547E-15 -1.66825522834717E-12 2.28071583352891E-11 -2.27968072580498E-11 2.615153773013231E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO337940  

91485 (1999 RF115)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 RF115 = 1990 QG8 = 1990 QS15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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