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347220 (2011 HQ72)
Classification: Main-belt Asteroid          SPK-ID: 2347220
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2438637089102024 5.5274e-08  
a 2.619728844545182 2.3321e-08 au
q 1.980872052175354 1.4118e-07 au
i 14.98375478712085 5.7794e-06 deg
node 102.8458042091589 2.7249e-05 deg
peri 218.3353054767817 2.9843e-05 deg
M 351.9765455127404 1.402e-05 deg
tp 2459035.017698612427
(2020-Jul-04.51769861)
6.0437e-05 TDB
period 1548.755778474927
4.24
2.0681e-05
5.662e-08
d
yr
n .2324446533168031 3.1039e-09 deg/d
Q 3.258585636915009 2.9008e-08 au
  Orbit Determination Parameters
   # obs. used (total)      221  
   data-arc span      6233 days (17.07 yr)  
   first obs. used      2003-07-08  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58281  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 21:43:03  

Additional Information
 Earth MOID = .987989 au 
 Jupiter MOID = 2.0966 au 
 T_jup = 3.316 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457519.5 (2016-May-11.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2435234644233134 5.5217e-08  
q 1.981588014328802 1.4106e-07 au
tp 2457488.127867232062
(2016-Apr-09.62786723)
5.8777e-05 TDB
node 102.8562463012493 2.7264e-05 deg
peri 218.6229817911289 2.9871e-05 deg
i 14.97944972041986 5.7774e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      221  
   data-arc span      6233 days (17.07 yr)  
   first obs. used      2003-07-08  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58281  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 21:43:03  

Additional Information
 Jupiter MOID = 2.0966 au 
 T_jup = 3.316 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.048920871468783E-15 -7.732428376372895E-15 7.785459006436097E-13 1.495431486080383E-14 1.875022759956408E-13 -7.388214581058514E-17
q -7.732428376372895E-15 1.989826292827138E-14 -2.132668017913902E-12 -3.689597963700021E-14 -5.111579390106463E-13 8.860199944724064E-16
tp 7.785459006436097E-13 -2.132668017913902E-12 3.454694442082913E-9 3.809912608501651E-11 7.850630270745427E-10 -2.186883927054595E-12
node 1.495431486080383E-14 -3.689597963700021E-14 3.809912608501651E-11 7.433136093936618E-10 -7.087438080261011E-10 6.269468398080449E-12
peri 1.875022759956408E-13 -5.111579390106463E-13 7.850630270745427E-10 -7.087438080261011E-10 8.922758354050737E-10 -6.191625027096465E-12
i -7.388214581058514E-17 8.860199944724064E-16 -2.186883927054595E-12 6.269468398080449E-12 -6.191625027096465E-12 3.33788232407458E-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 16.1   n/a MPO437470  

347220 (2011 HQ72)          Discovered 2003-Jul-08 by NEAT at Palomar
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

Alternate Designations
 2011 HQ72 = 2003 QP90 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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