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30943 (1994 ED2)
Classification: Main-belt Asteroid          SPK-ID: 2030943
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1790154126354548 1.6486e-08  
a 2.752962267352076 1.0613e-08 au
q 2.260139591092207 4.8361e-08 au
i 7.752835365675891 2.9924e-07 deg
node 337.6523769619306 4.2743e-06 deg
peri 225.7373049406294 6.6496e-06 deg
M 293.9954753461786 7.9526e-06 deg
tp 2459506.393340493263
(2021-Oct-18.89334049)
3.747e-05 TDB
period 1668.394752558817
4.57
9.6477e-06
2.641e-08
d
yr
n .215776272041055 1.2477e-09 deg/d
Q 3.245784943611945 1.2513e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2029  
   data-arc span      15920 days (43.59 yr)  
   first obs. used      1977-08-18  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47781  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:32:24  

Additional Information
 Earth MOID = 1.26481 au 
 Jupiter MOID = 1.76586 au 
 T_jup = 3.308 
[ 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 13.74   n/a MPCxxxxx  
diameter diameter 10.097 km 1.885 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.063   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

30943 (1994 ED2)          Discovered 1994-Mar-12 by Endate, K., Watanabe, K. at Kitami
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1994 ED2 = 1977 QA = 2000 QN79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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