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305715 (2009 BU188)
Classification: Main-belt Asteroid          SPK-ID: 2305715
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04984165067047439 7.7458e-08  
a 3.045481819427748 3.8295e-08 au
q 2.893689978460549 2.47e-07 au
i 9.419481855870323 7.2468e-06 deg
node 183.9832580116839 4.2158e-05 deg
peri 66.91676992163973 7.3624e-05 deg
M 17.81966298625846 5.8658e-05 deg
tp 2459104.409726575831
(2020-Sep-11.90972658)
0.00031659 TDB
period 1941.254358142282
5.31
3.6615e-05
1.002e-07
d
yr
n .1854471045950457 3.4978e-09 deg/d
Q 3.197273660394947 4.0203e-08 au
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      5905 days (16.17 yr)  
   first obs. used      2004-04-22  
   last obs. used      2020-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54571  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:11:01  

Additional Information
 Earth MOID = 1.89568 au 
 Jupiter MOID = 1.81675 au 
 T_jup = 3.216 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457863.5 (2017-Apr-20.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04879339441910015 7.7735e-08  
q 2.89733533730838 2.4801e-07 au
tp 2457158.147865069094
(2015-May-15.64786507)
0.00032819 TDB
node 184.0168350925882 4.215e-05 deg
peri 65.90296153310354 7.4223e-05 deg
i 9.419742226134275 7.2491e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      5905 days (16.17 yr)  
   first obs. used      2004-04-22  
   last obs. used      2020-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54571  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:11:01  

Additional Information
 Jupiter MOID = 1.81675 au 
 T_jup = 3.216 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.042769065726645E-15 -1.907699919984325E-14 -8.963598077260089E-12 4.392195984420695E-16 -1.650468949237032E-12 -1.335584279613308E-14
q -1.907699919984325E-14 6.150757542292597E-14 2.409155862325255E-11 4.139443152606275E-15 4.491804022362931E-12 4.599329103586837E-14
tp -8.963598077260089E-12 2.409155862325255E-11 1.077086397123481E-7 1.332536110436877E-11 2.012231788583047E-8 2.239207553062214E-11
node 4.392195984420695E-16 4.139443152606275E-15 1.332536110436877E-11 1.776641303062948E-9 -1.749270883796651E-9 1.72966728429019E-10
peri -1.650468949237032E-12 4.491804022362931E-12 2.012231788583047E-8 -1.749270883796651E-9 5.50901784415934E-9 -1.662630773563296E-10
i -1.335584279613308E-14 4.599329103586837E-14 2.239207553062214E-11 1.72966728429019E-10 -1.662630773563296E-10 5.254957419341486E-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 16.25   n/a E2021B25  

305715 (2009 BU188)          Discovered 2009-Jan-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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