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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09661111249350617 4.8003e-08  
a 3.015024303630178 1.5527e-08 au
q 2.723739451461508 1.4299e-07 au
i 9.661161222101802 5.1409e-06 deg
node 352.3323842544488 2.346e-05 deg
peri 37.27265003680709 3.2315e-05 deg
M 243.437916150539 2.261e-05 deg
tp 2459619.640844168587
(2022-Feb-09.14084417)
0.00012195 TDB
period 1912.205895259672
5.24
1.4772e-05
4.044e-08
d
yr
n .1882642454415784 1.4543e-09 deg/d
Q 3.306309155798848 1.7027e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2180  
   data-arc span      27681 days (75.79 yr)  
   first obs. used      1943-11-03  
   last obs. used      2019-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46349  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:27:16  

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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