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150109 (1981 EA17)
Classification: Main-belt Asteroid          SPK-ID: 2150109
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08266709146824688 3.8525e-08  
a 2.47838859062448 1.6642e-08 au
q 2.273507414309466 9.9917e-08 au
i 5.124224393596441 5.0193e-06 deg
node 323.2340921407121 4.3082e-05 deg
peri 309.7574743856405 5.344e-05 deg
M 345.4416387186423 2.9783e-05 deg
tp 2459258.131844646919
(2021-Feb-12.63184465)
0.00011781 TDB
period 1425.123588563394
3.90
1.4354e-05
3.93e-08
d
yr
n .2526096704096383 2.5443e-09 deg/d
Q 2.683269766939493 1.8017e-08 au
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      14324 days (39.22 yr)  
   first obs. used      1981-03-06  
   last obs. used      2020-05-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53589  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:17:09  

Additional Information
 Earth MOID = 1.25946 au 
 Jupiter MOID = 2.40985 au 
 T_jup = 3.470 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457225.5 (2015-Jul-22.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08319441226001538 3.8435e-08  
q 2.272456417149678 9.9624e-08 au
tp 2457829.702298228554
(2017-Mar-17.20229823)
0.00012029 TDB
node 323.2822887520667 4.3035e-05 deg
peri 309.0358392590502 5.3331e-05 deg
i 5.12778328252024 5.021e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      14324 days (39.22 yr)  
   first obs. used      1981-03-06  
   last obs. used      2020-05-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53589  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:17:09  

Additional Information
 Jupiter MOID = 2.40985 au 
 T_jup = 3.470 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.477284556206117E-15 -3.78576932600967E-15 1.562622846029923E-12 -1.134993652145282E-14 4.338313208485275E-13 1.317311262222842E-15
q -3.78576932600967E-15 9.924888994270223E-15 -4.344924613168039E-12 2.97901745219446E-14 -1.221164281469322E-12 -2.605632770496887E-15
tp 1.562622846029923E-12 -4.344924613168039E-12 1.447001646820893E-8 -7.069293839821242E-11 3.797198693423299E-9 -6.860955696509129E-13
node -1.134993652145282E-14 2.97901745219446E-14 -7.069293839821242E-11 1.852022005349676E-9 -1.862191484404558E-9 1.678500765183593E-11
peri 4.338313208485275E-13 -1.221164281469322E-12 3.797198693423299E-9 -1.862191484404558E-9 2.844214668691149E-9 -1.697515598615433E-11
i 1.317311262222842E-15 -2.605632770496887E-15 -6.860955696509129E-13 1.678500765183593E-11 -1.697515598615433E-11 2.52099581577236E-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 15.9   n/a MPO469593  

150109 (1981 EA17)          Discovered 1981-Mar-06 by Bus, S. J. at Siding Spring
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

Alternate Designations
 1981 EA17 = 2004 CX68 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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