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91390 (1999 KL)
Classification: Main-belt Asteroid          SPK-ID: 2091390
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3145296824773361 5.2023e-08  
a 2.574007670892273 1.3668e-08 au
q 1.764405855472299 1.4117e-07 au
i 6.859171992468223 4.1657e-06 deg
node 163.2448096155441 2.3007e-05 deg
peri 177.9260509684403 2.4114e-05 deg
M 329.0570075941987 4.254e-06 deg
tp 2459130.150140600007
(2020-Oct-07.65014060)
1.7827e-05 TDB
period 1508.388393853336
4.13
1.2014e-05
3.289e-08
d
yr
n .2386653208596643 1.9009e-09 deg/d
Q 3.383609486312247 1.7966e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1168  
   data-arc span      9728 days (26.63 yr)  
   first obs. used      1994-03-13  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51629  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:40:03  

Additional Information
 Earth MOID = .756205 au 
 Jupiter MOID = 2.03415 au 
 T_jup = 3.347 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457621.5 (2016-Aug-21.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .314460452248478 5.2074e-08  
q 1.764105274075594 1.4126e-07 au
tp 2457623.790734915382
(2016-Aug-23.29073492)
2.1313e-05 TDB
node 163.2819760925815 2.3009e-05 deg
peri 178.1234460336983 2.4113e-05 deg
i 6.85929830214233 4.1652e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1168  
   data-arc span      9728 days (26.63 yr)  
   first obs. used      1994-03-13  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51629  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:40:03  

Additional Information
 Jupiter MOID = 2.03415 au 
 T_jup = 3.347 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.711657496633561E-15 -7.348799903541452E-15 3.746656008894755E-13 -1.760630916353989E-14 1.641063763087161E-13 -1.738434890279523E-14
q -7.348799903541452E-15 1.995326907904946E-14 -1.073950908452537E-12 4.702169057620798E-14 -4.595791575165386E-13 4.732028212690514E-14
tp 3.746656008894755E-13 -1.073950908452537E-12 4.542304462820301E-10 4.213286571554641E-12 1.570646368212606E-10 -2.230419876472333E-12
node -1.760630916353989E-14 4.702169057620798E-14 4.213286571554641E-12 5.294115134036338E-10 -5.236207048407775E-10 -2.467357830853147E-11
peri 1.641063763087161E-13 -4.595791575165386E-13 1.570646368212606E-10 -5.236207048407775E-10 5.814214661395115E-10 2.371550391820518E-11
i -1.738434890279523E-14 4.732028212690514E-14 -2.230419876472333E-12 -2.467357830853147E-11 2.371550391820518E-11 1.734915387519856E-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 15.3   n/a MPO436410  

91390 (1999 KL)          Discovered 1999-May-16 by Spacewatch at Kitt Peak
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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