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212117 (2005 EQ189)
Classification: Main-belt Asteroid          SPK-ID: 2212117
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08607802000655829 5.4179e-08  
a 2.624408234331306 1.9997e-08 au
q 2.39850436983116 1.3489e-07 au
i 5.115525037962763 5.6927e-06 deg
node 149.7299024251216 5.5232e-05 deg
peri 95.91478904704279 6.7268e-05 deg
M 146.6299490082361 3.5896e-05 deg
tp 2458367.992474246901
(2018-Sep-06.49247425)
0.00015535 TDB
period 1552.90723901381
4.25
1.7749e-05
4.859e-08
d
yr
n .231823248005864 2.6497e-09 deg/d
Q 2.850312098831453 2.1719e-08 au
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      8656 days (23.70 yr)  
   first obs. used      1996-01-13  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57998  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 23:43:33  

Additional Information
 Earth MOID = 1.3918 au 
 Jupiter MOID = 2.16851 au 
 T_jup = 3.392 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457208.5 (2015-Jul-05.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08597746090328917 5.3699e-08  
q 2.39949948320738 1.3355e-07 au
tp 2456818.080948413470
(2014-Jun-09.58094841)
0.00016007 TDB
node 149.7901086512886 5.5217e-05 deg
peri 96.67805948565331 6.7502e-05 deg
i 5.11581909069558 5.6944e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      8656 days (23.70 yr)  
   first obs. used      1996-01-13  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57998  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 23:43:33  

Additional Information
 Jupiter MOID = 2.16851 au 
 T_jup = 3.392 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.883551711404636E-15 -7.117160662404666E-15 -3.828998374115782E-12 -1.417575958263358E-14 -9.674444280550641E-13 -7.31035659970403E-15
q -7.117160662404666E-15 1.78350234240794E-14 9.388018128643223E-12 3.583309342935652E-14 2.3885955339241E-12 1.863371753443184E-14
tp -3.828998374115782E-12 9.388018128643223E-12 2.562276689097699E-8 4.278578964023676E-11 6.235717575485908E-9 1.454811335318172E-11
node -1.417575958263358E-14 3.583309342935652E-14 4.278578964023676E-11 3.048919525958482E-9 -3.025835675650817E-9 7.690293753100581E-11
peri -9.674444280550641E-13 2.3885955339241E-12 6.235717575485908E-9 -3.025835675650817E-9 4.55651159777436E-9 -7.290860241260704E-11
i -7.31035659970403E-15 1.863371753443184E-14 1.454811335318172E-11 7.690293753100581E-11 -7.290860241260704E-11 3.242576941562905E-11

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 16.6   n/a MPO494172  

212117 (2005 EQ189)          Discovered 2005-Mar-11 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 2005 EQ189 = 2009 BW121 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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