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227092 (2005 MM21)
Classification: Main-belt Asteroid          SPK-ID: 2227092
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2259747550422061 5.6945e-08  
a 2.338196563979758 1.2608e-08 au
q 1.809823168193905 1.2828e-07 au
i 1.249644383189706 4.7259e-06 deg
node 272.1417938994156 0.00021574 deg
peri 108.3307848765526 0.00021608 deg
M 62.62333280335773 1.0592e-05 deg
tp 2458973.328612787814
(2020-May-03.82861279)
3.7952e-05 TDB
period 1305.930165888618
3.58
1.0562e-05
2.892e-08
d
yr
n .2756655825888198 2.2296e-09 deg/d
Q 2.866569959765612 1.5457e-08 au
  Orbit Determination Parameters
   # obs. used (total)      402  
   data-arc span      6645 days (18.19 yr)  
   first obs. used      2002-12-05  
   last obs. used      2021-02-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54079  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:38:24  

Additional Information
 Earth MOID = .811607 au 
 Jupiter MOID = 2.59894 au 
 T_jup = 3.531 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457396.5 (2016-Jan-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2275880739330982 5.7183e-08  
q 1.805274799128157 1.2906e-07 au
tp 2457666.997228649401
(2016-Oct-05.49722865)
3.6079e-05 TDB
node 272.2558997858882 0.00021629 deg
peri 108.0921045040651 0.00021661 deg
i 1.247880243766915 4.7234e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      402  
   data-arc span      6645 days (18.19 yr)  
   first obs. used      2002-12-05  
   last obs. used      2021-02-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54079  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:38:24  

Additional Information
 Jupiter MOID = 2.59894 au 
 T_jup = 3.531 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.269930110988222E-15 -7.365084017011193E-15 -3.909587283114914E-13 -4.241860114341784E-14 -2.455925867788982E-13 -2.418362987070955E-15
q -7.365084017011193E-15 1.665724527502754E-14 9.040162626388023E-13 9.743418422318277E-14 5.55075506584445E-13 5.497640254780123E-15
tp -3.909587283114914E-13 9.040162626388023E-13 1.301669461674538E-9 1.337582901061111E-11 4.39715373560904E-10 -1.63065194514244E-13
node -4.241860114341784E-14 9.743418422318277E-14 1.337582901061111E-11 4.6779578070568E-8 -4.676197089765088E-8 1.083683697491562E-11
peri -2.455925867788982E-13 5.55075506584445E-13 4.39715373560904E-10 -4.676197089765088E-8 4.692165216542934E-8 -1.076690406915757E-11
i -2.418362987070955E-15 5.497640254780123E-15 -1.63065194514244E-13 1.083683697491562E-11 -1.076690406915757E-11 2.231023322843698E-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 17.07   n/a MPCxxxxx  

227092 (2005 MM21)          Discovered 2005-Jun-30 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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