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359287 (2009 HO28)
Classification: Main-belt Asteroid          SPK-ID: 2359287
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2611211550675092 6.6302e-08  
a 2.650743691483192 3.339e-08 au
q 1.958578436975188 1.7584e-07 au
i 13.09757960397252 8.2814e-06 deg
node 31.53305836984592 2.9695e-05 deg
peri 259.1868711072977 4.0043e-05 deg
M 161.0929585685304 1.6714e-05 deg
tp 2458295.118462229066
(2018-Jun-25.61846223)		 7.7306e-05 TDB
period 1576.340492185505
4.32		 2.9784e-05
8.154e-08		 d
yr
n .2283770554551199 4.3151e-09 deg/d
Q 3.342908945991197 4.2108e-08 au
   Orbit Determination Parameters
   # obs. used (total)      160  
   data-arc span      6627 days (18.14 yr)  
   first obs. used      2001-10-10  
   last obs. used      2019-12-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67549  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 16:22:30  

Additional Information
 Earth MOID = .993152 au 
 Jupiter MOID = 2.03547 au 
 T_jup = 3.305 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457128.5 (2015-Apr-16.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2622378670812007 6.582e-08  
q 1.954145472401906 1.7465e-07 au
tp 2456720.773067448686
(2014-Mar-04.27306745)		 9.2536e-05 TDB
node 31.55630039675256 2.9701e-05 deg
peri 259.2870644902345 4e-05 deg
i 13.10176631209352 8.2846e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      160  
   data-arc span      6627 days (18.14 yr)  
   first obs. used      2001-10-10  
   last obs. used      2019-12-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67549  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 16:22:30  

Additional Information
 Jupiter MOID = 2.03547 au 
 T_jup = 3.305 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.332211296235232E-15 -1.137865523396644E-14 -5.55092447036273E-13 6.699972412125234E-14 -4.896431100035436E-13 -5.330325843829983E-14
q -1.137865523396644E-14 3.05023472876204E-14 -3.655295073089419E-14 -1.735300799540666E-13 9.066317929174294E-13 1.444490199367937E-13
tp -5.55092447036273E-13 -3.655295073089419E-14 8.562981386834818E-9 8.71169077674308E-12 2.460201745725697E-9 -2.469441291686981E-11
node 6.699972412125234E-14 -1.735300799540666E-13 8.71169077674308E-12 8.821207881780568E-10 -8.601186934831725E-10 -6.453011075281522E-11
peri -4.896431100035436E-13 9.066317929174294E-13 2.460201745725697E-9 -8.601186934831725E-10 1.600023193557391E-9 5.955980704824684E-11
i -5.330325843829983E-14 1.444490199367937E-13 -2.469441291686981E-11 -6.453011075281522E-11 5.955980704824684E-11 6.863444487266376E-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  
rotation period rot_per 16.7957 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

359287 (2009 HO28)          Discovered 2009-Apr-02 by Spacewatch at Kitt Peak
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

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