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22269 (1981 EK27)
Classification: Main-belt Asteroid          SPK-ID: 2022269
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08416824558378862 3.7812e-08  
a 2.226485842612113 6.3874e-09 au
q 2.039086435422308 8.5168e-08 au
i 5.393847025780604 4.7483e-06 deg
node 354.0173399743498 4.0483e-05 deg
peri 74.4961449189873 5.0024e-05 deg
M 89.91475989148526 2.7899e-05 deg
tp 2458897.420318685675
(2020-Feb-17.92031869)		 9.4081e-05 TDB
period 1213.468015761106
3.32		 5.2218e-06
1.43e-08		 d
yr
n .2966703656990931 1.2766e-09 deg/d
Q 2.413885249801918 6.925e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1782  
   data-arc span      14644 days (40.09 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50221  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:03:00  

Additional Information
 Earth MOID = 1.0599 au 
 Jupiter MOID = 2.77355 au 
 T_jup = 3.635 
[ 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 14.6   n/a MPO502330  
diameter diameter 3.360 km 0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.198   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22269 (1981 EK27)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EK27 = 1991 EQ5 = 1998 HD151 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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