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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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2714777747729707 5.0469e-08  
a 2.536555626686326 1.1959e-08 au
q 1.847937149565664 1.3068e-07 au
i 8.845654504837837 5.006e-06 deg
node 23.00067095618707 2.669e-05 deg
peri 349.3050057588201 2.8762e-05 deg
M 347.7945514152885 1.3734e-05 deg
tp 2459050.528359035188
(2020-Jul-20.02835904)
5.639e-05 TDB
period 1475.587654781256
4.04
1.0435e-05
2.857e-08
d
yr
n .2439705962797358 1.7253e-09 deg/d
Q 3.225174103806988 1.5205e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1309  
   data-arc span      32097 days (87.88 yr)  
   first obs. used      1931-10-06  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53449  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:48:29  

Additional Information
 Earth MOID = .849475 au 
 Jupiter MOID = 2.23798 au 
 T_jup = 3.379 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456599.5 (2013-Nov-03.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2739336220763568 5.0829e-08  
q 1.840424796788819 1.3199e-07 au
tp 2456101.806759618801
(2012-Jun-23.30675962)
5.4562e-05 TDB
node 23.09354238451327 2.6626e-05 deg
peri 349.3960262263342 2.8657e-05 deg
i 8.86225298516781 5.0138e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1309  
   data-arc span      32097 days (87.88 yr)  
   first obs. used      1931-10-06  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53449  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:48:29  

Additional Information
 Jupiter MOID = 2.23798 au 
 T_jup = 3.379 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.583547878371634E-15 -6.695922373626495E-15 1.612105957091535E-12 5.492665272647676E-16 2.93815042907865E-13 -1.166548043570507E-15
q -6.695922373626495E-15 1.742239287574806E-14 -4.157893115899469E-12 -3.009676740711008E-15 -7.508580916136667E-13 3.815631535483347E-15
tp 1.612105957091535E-12 -4.157893115899469E-12 2.976977073236473E-9 -8.645627106575958E-12 5.948850802421166E-10 -3.626398184855755E-12
node 5.492665272647676E-16 -3.009676740711008E-15 -8.645627106575958E-12 7.089640558283614E-10 -7.019544107127906E-10 2.731115866110035E-11
peri 2.93815042907865E-13 -7.508580916136667E-13 5.948850802421166E-10 -7.019544107127906E-10 8.212193516511058E-10 -2.763669980931334E-11
i -1.166548043570507E-15 3.815631535483347E-15 -3.626398184855755E-12 2.731115866110035E-11 -2.763669980931334E-11 2.513800749154975E-11

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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