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1205 Ebella (1931 TB1)
Classification: Main-belt Asteroid          SPK-ID: 2001205
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2714777723844419 5.0276e-08  
a 2.536555626494345 1.1509e-08 au
q 1.847937155484438 1.3035e-07 au
i 8.845654227342868 4.9946e-06 deg
node 23.00066494730934 2.6231e-05 deg
peri 349.3050111429965 2.8131e-05 deg
M 347.7945521797366 1.2344e-05 deg
tp 2459050.528355896146
(2020-Jul-20.02835590)
5.0656e-05 TDB
period 1475.587654613735
4.04
1.0043e-05
2.75e-08
d
yr
n .2439705963074334 1.6605e-09 deg/d
Q 3.225174097504253 1.4634e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1346  
   data-arc span      32445 days (88.83 yr)  
   first obs. used      1931-10-06  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53108  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:29:53  

Additional Information
 Earth MOID = .849475 au 
 Jupiter MOID = 2.23798 au 
 T_jup = 3.379 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5   n/a MPO448923  
diameter diameter 5.474 km 0.283 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.214   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1205 Ebella (1931 TB1)          Discovered 1931-Oct-06 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1931 TB1 = 1970 JT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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