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26805 (1981 EZ30)
Classification: Main-belt Asteroid          SPK-ID: 2026805
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06656210947115349 2.6445e-08  
a 2.794273222140483 1.342e-08 au
q 2.608280502036056 7.5161e-08 au
i 2.713747436837953 3.8488e-06 deg
node 332.3228605529241 6.1171e-05 deg
peri 106.245661907423 6.9081e-05 deg
M 237.7501197128352 3.3326e-05 deg
tp 2459579.858885363075
(2021-Dec-31.35888536)
0.00015944 TDB
period 1706.089185860781
4.67
1.2291e-05
3.365e-08
d
yr
n .2110088985871905 1.5201e-09 deg/d
Q 2.980265942244911 1.4313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1286  
   data-arc span      14508 days (39.72 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50013  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:29:22  

Additional Information
 Earth MOID = 1.62542 au 
 Jupiter MOID = 2.17136 au 
 T_jup = 3.323 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457285.5 (2015-Sep-20.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06816499367815064 2.6385e-08  
q 2.602658101233452 7.5356e-08 au
tp 2457863.701252005513
(2017-Apr-20.20125201)
0.00015106 TDB
node 332.5704161895146 6.1312e-05 deg
peri 103.9564830579503 6.8819e-05 deg
i 2.711239391191133 3.845e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1286  
   data-arc span      14508 days (39.72 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50013  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:29:22  

Additional Information
 Jupiter MOID = 2.17136 au 
 T_jup = 3.323 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.961702090961327E-16 -1.96145010735075E-15 1.656081628340544E-13 1.034001728223046E-15 5.160853061848569E-14 2.45566118285185E-16
q -1.96145010735075E-15 5.678457989616033E-15 1.652350834095515E-13 -2.68114654882347E-15 -2.503114505237316E-14 -5.49828363007465E-16
tp 1.656081628340544E-13 1.652350834095515E-13 2.282002082419626E-8 -1.842807896850721E-11 4.727183415931686E-9 1.596264826435098E-12
node 1.034001728223046E-15 -2.68114654882347E-15 -1.842807896850721E-11 3.759162990583329E-9 -3.758428281625344E-9 6.811973974053433E-12
peri 5.160853061848569E-14 -2.503114505237316E-14 4.727183415931686E-9 -3.758428281625344E-9 4.736083477466189E-9 -6.482530436491787E-12
i 2.45566118285185E-16 -5.49828363007465E-16 1.596264826435098E-12 6.811973974053433E-12 -6.482530436491787E-12 1.478380347469451E-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 14.7   n/a MPO435950  

26805 (1981 EZ30)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EZ30 = 1997 SL35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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