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266677 (2009 HG71)
Classification: Main-belt Asteroid          SPK-ID: 2266677
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1735206144751306 4.5304e-08  
a 2.264657930406569 1.3169e-08 au
q 1.871693094746443 1.0024e-07 au
i 4.030815907324413 7.4783e-06 deg
node 194.9684061473969 6.1943e-05 deg
peri 110.7867762368348 6.5418e-05 deg
M 138.259834634763 2.1867e-05 deg
tp 2458918.425171508223
(2020-Mar-09.92517151)
7.3774e-05 TDB
period 1244.807927853303
3.41
1.0858e-05
2.973e-08
d
yr
n .2892012429747514 2.5225e-09 deg/d
Q 2.657622766066694 1.5454e-08 au
  Orbit Determination Parameters
   # obs. used (total)      181  
   data-arc span      6225 days (17.04 yr)  
   first obs. used      2003-10-21  
   last obs. used      2020-11-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:16:48  

Additional Information
 Earth MOID = .860959 au 
 Jupiter MOID = 2.58441 au 
 T_jup = 3.594 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457362.5 (2015-Dec-06.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .173303475027385 4.526e-08  
q 1.872262724890515 1.0008e-07 au
tp 2457674.189194367503
(2016-Oct-12.68919437)
7.0166e-05 TDB
node 195.0053084434442 6.1925e-05 deg
peri 110.8475503826145 6.5411e-05 deg
i 4.031071064849773 7.4793e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      181  
   data-arc span      6225 days (17.04 yr)  
   first obs. used      2003-10-21  
   last obs. used      2020-11-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:16:48  

Additional Information
 Jupiter MOID = 2.58441 au 
 T_jup = 3.594 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.048455523442474E-15 -4.504378787153981E-15 1.374747981054511E-12 -8.155613223607593E-15 3.682505244856411E-13 1.721938984038633E-15
q -4.504378787153981E-15 1.001561075472642E-14 -2.898929059828238E-12 1.628320737384682E-14 -7.809327534781326E-13 -3.475291697753369E-15
tp 1.374747981054511E-12 -2.898929059828238E-12 4.923200266929599E-9 -3.419718419069842E-11 1.485021223342119E-9 5.456128528858687E-12
node -8.155613223607593E-15 1.628320737384682E-14 -3.419718419069842E-11 3.83474836126901E-9 -3.834600745806677E-9 -4.686360600049199E-11
peri 3.682505244856411E-13 -7.809327534781326E-13 1.485021223342119E-9 -3.834600745806677E-9 4.278660306571078E-9 4.825900671493251E-11
i 1.721938984038633E-15 -3.475291697753369E-15 5.456128528858687E-12 -4.686360600049199E-11 4.825900671493251E-11 5.593947299187571E-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 17.8   n/a MPO433731  

266677 (2009 HG71)          Discovered 2009-Apr-22 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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