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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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2247396398778202 3.616e-08  
a 2.555418955575518 1.2412e-08 au
q 1.98111501976252 8.9805e-08 au
i 15.89746287546498 4.0748e-06 deg
node 127.9047760955657 1.4632e-05 deg
peri 225.9477622484337 1.8595e-05 deg
M 183.9970161524317 1.4263e-05 deg
tp 2459729.972836623975
(2022-May-30.47283662)
6.167e-05 TDB
period 1492.078233242175
4.09
1.0871e-05
2.976e-08
d
yr
n .2412742120215417 1.7578e-09 deg/d
Q 3.129722891388515 1.5201e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1720  
   data-arc span      11359 days (31.10 yr)  
   first obs. used      1989-06-05  
   last obs. used      2020-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48026  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:29:21  

Additional Information
 Earth MOID = 1.00465 au 
 Jupiter MOID = 2.35644 au 
 T_jup = 3.350 
[ show covariance matrix ]

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  
rotation period rot_per 100.037 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

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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