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JPL Small-Body Database Browser
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26365 (1999 AK21)
Classification: Main-belt Asteroid          SPK-ID: 2026365
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2243973334954922 3.6182e-08  
a 2.556136939834136 1.2724e-08 au
q 1.982546626486029 8.9968e-08 au
i 15.89500001811923 4.3802e-06 deg
node 127.9026010411546 1.6414e-05 deg
peri 225.9815547358355 2.0823e-05 deg
M 87.48817495451729 1.4717e-05 deg
tp 2458237.738275348633
(2018-Apr-29.23827535)
6.0248e-05 TDB
period 1492.707110902525
4.09
1.1146e-05
3.052e-08
d
yr
n .2411725631710402 1.8008e-09 deg/d
Q 3.129727253182244 1.5579e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1354  
   data-arc span      10897 days (29.83 yr)  
   first obs. used      1989-06-05  
   last obs. used      2019-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50581  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 00:57:33  

Additional Information
 Earth MOID = 1.00523 au 
 Jupiter MOID = 2.35303 au 
 T_jup = 3.349 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456812.5 (2014-Jun-04.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2238031171290166 3.5977e-08  
q 1.983552248271188 8.932e-08 au
tp 2456741.092897352746
(2014-Mar-24.59289735)
5.8288e-05 TDB
node 128.0348642971512 1.6363e-05 deg
peri 225.1540257275772 2.0868e-05 deg
i 15.92175143975956 4.3875e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1354  
   data-arc span      10897 days (29.83 yr)  
   first obs. used      1989-06-05  
   last obs. used      2019-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50581  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 00:57:33  

Additional Information
 Jupiter MOID = 2.35303 au 
 T_jup = 3.349 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.294377059293106E-15 -3.195761293266526E-15 5.24859517689704E-13 -9.080117121129326E-15 9.909825339877591E-14 1.600880367108776E-15
q -3.195761293266526E-15 7.978048707088935E-15 -1.266330314558853E-12 2.243495834515774E-14 -2.367329685529685E-13 -3.709339955477926E-15
tp 5.24859517689704E-13 -1.266330314558853E-12 3.3974474057893E-9 -2.293194214202601E-11 7.796338595072483E-10 -6.98645957489623E-12
node -9.080117121129326E-15 2.243495834515774E-14 -2.293194214202601E-11 2.677434068154639E-10 -2.62062700295756E-10 -1.731725644410842E-11
peri 9.909825339877591E-14 -2.367329685529685E-13 7.796338595072483E-10 -2.62062700295756E-10 4.354938091269226E-10 1.508397347179757E-11
i 1.600880367108776E-15 -3.709339955477926E-15 -6.98645957489623E-12 -1.731725644410842E-11 1.508397347179757E-11 1.925051550790046E-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 13.6   n/a MPO324552  

26365 (1999 AK21)          Discovered 1999-Jan-14 by Korlevic, K. at Visnjan
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 AK21 = 1989 LB1 = 2000 EZ138 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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