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30740 (1981 ET14)
Classification: Main-belt Asteroid          SPK-ID: 2030740
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .172292021734772 3.4584e-08  
a 3.133607143733291 1.9262e-08 au
q 2.593711633616958 1.0427e-07 au
i 2.495475069227906 3.9379e-06 deg
node 267.18058688 0.00013038 deg
peri 200.5756357856555 0.00013153 deg
M 115.812494926616 1.7786e-05 deg
tp 2458548.694281044343
(2019-Mar-06.19428104)
9.8e-05 TDB
period 2026.120402403225
5.55
1.8682e-05
5.115e-08
d
yr
n .1776794703676032 1.6383e-09 deg/d
Q 3.673502653849624 2.2581e-08 au
  Orbit Determination Parameters
   # obs. used (total)      855  
   data-arc span      15259 days (41.78 yr)  
   first obs. used      1978-09-01  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59079  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:39:34  

Additional Information
 Earth MOID = 1.61055 au 
 Jupiter MOID = 1.469 au 
 T_jup = 3.188 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.57   n/a E2021B10  

30740 (1981 ET14)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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