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226630 (2004 EU91)
Classification: Main-belt Asteroid          SPK-ID: 2226630
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1143440624742607 6.7209e-08  
a 2.254212361900691 1.2545e-08 au
q 1.996456562761268 1.5291e-07 au
i 4.344313747411916 6.4042e-06 deg
node 159.3145059456659 7.545e-05 deg
peri 230.1690057296227 7.9755e-05 deg
M 58.75189301799075 2.2025e-05 deg
tp 2458798.751631614914
(2019-Nov-11.25163161)
7.6101e-05 TDB
period 1236.205488670651
3.38
1.0319e-05
2.825e-08
d
yr
n .2912137207764097 2.431e-09 deg/d
Q 2.511968161040115 1.3979e-08 au
  Orbit Determination Parameters
   # obs. used (total)      220  
   data-arc span      6248 days (17.11 yr)  
   first obs. used      2002-10-04  
   last obs. used      2019-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57827  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 17:27:48  

Additional Information
 Earth MOID = 1.00421 au 
 Jupiter MOID = 2.89698 au 
 T_jup = 3.612 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457577.5 (2016-Jul-08.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1147665525696967 6.7479e-08  
q 1.995352832980434 1.5355e-07 au
tp 2457560.552512496761
(2016-Jun-21.05251250)
7.8905e-05 TDB
node 159.3795709777496 7.5408e-05 deg
peri 229.5581460840193 7.9642e-05 deg
i 4.345770202261042 6.4097e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      220  
   data-arc span      6248 days (17.11 yr)  
   first obs. used      2002-10-04  
   last obs. used      2019-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57827  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 17:27:48  

Additional Information
 Jupiter MOID = 2.89698 au 
 T_jup = 3.612 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.553378564666226E-15 -1.033492686351961E-14 -1.090635701655641E-12 6.606398454816697E-14 -3.760550372352701E-13 -8.098709319005291E-15
q -1.033492686351961E-14 2.357861966063303E-14 2.113312337195033E-12 -1.4715472581741E-13 7.380954577915392E-13 1.901105069930716E-14
tp -1.090635701655641E-12 2.113312337195033E-12 6.225966227774046E-9 -3.978503320564316E-11 2.054216991457443E-9 7.932715601640009E-13
node 6.606398454816697E-14 -1.4715472581741E-13 -3.978503320564316E-11 5.686291762177061E-9 -5.681456489972536E-9 2.523469204220238E-10
peri -3.760550372352701E-13 7.380954577915392E-13 2.054216991457443E-9 -5.681456489972536E-9 6.342910466542676E-9 -2.515064708180027E-10
i -8.098709319005291E-15 1.901105069930716E-14 7.932715601640009E-13 2.523469204220238E-10 -2.515064708180027E-10 4.108383359648114E-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 17.6   n/a MPO450051  

226630 (2004 EU91)          Discovered 2004-Mar-15 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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