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JPL Small-Body Database Browser
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91452 (1999 RL43)
Classification: Main-belt Asteroid          SPK-ID: 2091452
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05712044618870465 4.0108e-08  
a 2.976816673906349 2.3403e-08 au
q 2.806779577270842 1.2212e-07 au
i 8.344777538192005 4.0837e-06 deg
node 234.5077157021219 3.1699e-05 deg
peri 210.8902822361158 5.078e-05 deg
M 295.4759288658639 4.0601e-05 deg
tp 2459336.737247528139
(2021-May-02.23724753)
0.00021287 TDB
period 1875.972904104182
5.14
2.2122e-05
6.057e-08
d
yr
n .1919004262867581 2.263e-09 deg/d
Q 3.146853770541855 2.4739e-08 au
  Orbit Determination Parameters
   # obs. used (total)      694  
   data-arc span      7358 days (20.15 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4772  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:55:47  

Additional Information
 Earth MOID = 1.82608 au 
 Jupiter MOID = 2.07246 au 
 T_jup = 3.242 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457382.5 (2015-Dec-26.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0543887160564766 3.9376e-08  
q 2.81615546755557 1.1967e-07 au
tp 2457444.628056612483
(2016-Feb-26.12805661)
0.00022046 TDB
node 234.5740185917016 3.1752e-05 deg
peri 208.1854878048023 5.2916e-05 deg
i 8.333460880345907 4.0805e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      694  
   data-arc span      7358 days (20.15 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4772  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:55:47  

Additional Information
 Jupiter MOID = 2.07246 au 
 T_jup = 3.242 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.550440540027913E-15 -4.629166464242008E-15 8.307278549700257E-13 3.676587113611857E-15 1.962890361755348E-13 1.097861271547376E-15
q -4.629166464242008E-15 1.432096681193949E-14 -1.249010832818604E-12 -1.076952834343432E-14 -3.594908451492668E-13 -1.852096987124197E-15
tp 8.307278549700257E-13 -1.249010832818604E-12 4.860338959013781E-8 -2.828537188810155E-11 9.36097757248788E-9 1.002648385011654E-11
node 3.676587113611857E-15 -1.076952834343432E-14 -2.828537188810155E-11 1.008175115795251E-9 -1.002607034384538E-9 2.328736875738196E-12
peri 1.962890361755348E-13 -3.594908451492668E-13 9.36097757248788E-9 -1.002607034384538E-9 2.800125475209773E-9 -3.840266669895807E-13
i 1.097861271547376E-15 -1.852096987124197E-15 1.002648385011654E-11 2.328736875738196E-12 -3.840266669895807E-13 1.665077388085362E-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 14.7   n/a MPO449562  

91452 (1999 RL43)          Discovered 1999-Sep-14 by Kusnirak, P., Pravec, P. at Ondrejov
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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