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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2247396401619427 3.6162e-08  
a 2.555418955368577 1.2454e-08 au
q 1.981115018876035 8.9813e-08 au
i 15.89746209358257 4.1344e-06 deg
node 127.904778868323 1.4826e-05 deg
peri 225.9477601457438 1.8853e-05 deg
M 183.997015694793 1.4345e-05 deg
tp 2459729.972838432122
(2022-May-30.47283843)
6.1952e-05 TDB
period 1492.07823306093
4.09
1.0908e-05
2.986e-08
d
yr
n .2412742120508498 1.7638e-09 deg/d
Q 3.129722891861118 1.5253e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1665  
   data-arc span      11286 days (30.90 yr)  
   first obs. used      1989-06-05  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47592  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:02:20  

Additional Information
 Earth MOID = 1.00465 au 
 Jupiter MOID = 2.35644 au 
 T_jup = 3.350 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457052.5 (2015-Jan-30.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2237492648656706 3.5988e-08  
q 1.983946424705815 8.926e-08 au
tp 2456741.199331839687
(2014-Mar-24.69933184)
5.4445e-05 TDB
node 128.0350047269576 1.4779e-05 deg
peri 225.2030527715118 1.8895e-05 deg
i 15.92172680956861 4.1405e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1665  
   data-arc span      11286 days (30.90 yr)  
   first obs. used      1989-06-05  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47592  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:02:20  

Additional Information
 Jupiter MOID = 2.35644 au 
 T_jup = 3.350 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.295120168143952E-15 -3.195257623151651E-15 5.163350214936827E-13 -9.025028369649407E-15 9.675417511987664E-14 1.68275961181651E-15
q -3.195257623151651E-15 7.967335326463527E-15 -1.210039049671406E-12 2.217980668286818E-14 -2.209770129138666E-13 -4.005923530208634E-15
tp 5.163350214936827E-13 -1.210039049671406E-12 2.964274391581028E-9 -1.97950654837405E-11 6.599468793551082E-10 -6.058014967656753E-12
node -9.025028369649407E-15 2.217980668286818E-14 -1.97950654837405E-11 2.184161071321952E-10 -2.138664222067567E-10 -7.227159061097789E-12
peri 9.675417511987664E-14 -2.209770129138666E-13 6.599468793551082E-10 -2.138664222067567E-10 3.570291601802912E-10 5.646393619092414E-12
i 1.68275961181651E-15 -4.005923530208634E-15 -6.058014967656753E-12 -7.227159061097789E-12 5.646393619092414E-12 1.714385440252374E-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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