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359275 (2009 HB2)
Classification: Main-belt Asteroid          SPK-ID: 2359275
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2270340177339695 6.0471e-08  
a 2.637222169787178 4.0678e-08 au
q 2.038483024923298 1.5453e-07 au
i 11.93781480417229 5.9828e-06 deg
node 106.7106580854493 3.3261e-05 deg
peri 115.5937273864212 3.7348e-05 deg
M 202.1245200827497 2.6078e-05 deg
tp 2459686.510379644808
(2022-Apr-17.01037964)
0.00012571 TDB
period 1564.294447760828
4.28
3.6193e-05
9.909e-08
d
yr
n .230135701443749 5.3246e-09 deg/d
Q 3.235961314651057 4.9913e-08 au
  Orbit Determination Parameters
   # obs. used (total)      143  
   data-arc span      4334 days (11.87 yr)  
   first obs. used      2007-12-19  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67689  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 11:15:28  

Additional Information
 Earth MOID = 1.06137 au 
 Jupiter MOID = 1.87476 au 
 T_jup = 3.330 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457220.5 (2015-Jul-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2271024452631386 6.0443e-08  
q 2.038234546571415 1.5449e-07 au
tp 2456558.939633910711
(2013-Sep-23.43963391)
8.0016e-05 TDB
node 106.7468324088186 3.328e-05 deg
peri 115.6491477530652 3.7369e-05 deg
i 11.93469153182465 5.9808e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      143  
   data-arc span      4334 days (11.87 yr)  
   first obs. used      2007-12-19  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67689  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 11:15:28  

Additional Information
 Jupiter MOID = 1.87476 au 
 T_jup = 3.330 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.65335003475207E-15 -9.154145146906128E-15 -2.839893056574776E-13 1.894175466042481E-14 -2.845310518603212E-14 8.250234985643867E-15
q -9.154145146906128E-15 2.386805375764534E-14 1.646968474592614E-12 -5.881439766031225E-14 3.40295999427117E-13 -1.704489255452963E-14
tp -2.839893056574776E-13 1.646968474592614E-12 6.402521337588995E-9 -6.352051129162871E-11 1.41363527087339E-9 5.426452791175187E-12
node 1.894175466042481E-14 -5.881439766031225E-14 -6.352051129162871E-11 1.107559046706455E-9 -1.096398640083273E-9 -1.177269608356898E-11
peri -2.845310518603212E-14 3.40295999427117E-13 1.41363527087339E-9 -1.096398640083273E-9 1.396438237817256E-9 1.308243132650805E-11
i 8.250234985643867E-15 -1.704489255452963E-14 5.426452791175187E-12 -1.177269608356898E-11 1.308243132650805E-11 3.57703045420728E-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 16.4   n/a MPO455593  

359275 (2009 HB2)          Discovered 2009-Jan-08 by Spacewatch at Kitt Peak
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

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