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2646 Abetti (1977 EC1)
Classification: Main-belt Asteroid          SPK-ID: 2002646
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09661110679781076 4.6661e-08  
a 3.01502430272842 1.5405e-08 au
q 2.72373946781953 1.393e-07 au
i 9.661160612736483 5.0534e-06 deg
node 352.3323839379617 2.3454e-05 deg
peri 37.27265184115971 3.2183e-05 deg
M 243.4379152285836 2.2547e-05 deg
tp 2459619.640848787956
(2022-Feb-09.14084879)
0.00012166 TDB
period 1912.205894401795
5.24
1.4656e-05
4.013e-08
d
yr
n .1882642455260397 1.4429e-09 deg/d
Q 3.306309137637311 1.6894e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2226  
   data-arc span      27986 days (76.62 yr)  
   first obs. used      1943-11-03  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4606  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:48:07  

Additional Information
 Earth MOID = 1.7346 au 
 Jupiter MOID = 2.17245 au 
 T_jup = 3.220 
[ 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 11.4   n/a MPO473801  
diameter diameter 16.776 km 0.161 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.144   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2646 Abetti (1977 EC1)          Discovered 1977-Mar-13 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1977 EC1 = 1943 VE = 1948 UA = 1953 TZ1 = 1971 BZ = 1979 QP7 = 1979 SJ3 = 1982 FB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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