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312286 (2008 BR20)
Classification: Main-belt Asteroid          SPK-ID: 2312286
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1897589007113152 7.6394e-08  
a 2.69000976665784 2.5715e-08 au
q 2.179556470434147 2.0405e-07 au
i 14.85931233995455 7.7528e-06 deg
node 129.4491565340724 2.3571e-05 deg
peri 11.43702469966528 2.683e-05 deg
M 191.2011413185661 1.4835e-05 deg
tp 2459356.107425498025
(2021-May-21.60742550)
7.1342e-05 TDB
period 1611.495926596619
4.41
2.3107e-05
6.326e-08
d
yr
n .2233949177645755 3.2032e-09 deg/d
Q 3.200463062881533 3.0594e-08 au
  Orbit Determination Parameters
   # obs. used (total)      282  
   data-arc span      5701 days (15.61 yr)  
   first obs. used      2004-03-15  
   last obs. used      2019-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59866  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 08:09:46  

Additional Information
 Earth MOID = 1.19537 au 
 Jupiter MOID = 1.84635 au 
 T_jup = 3.299 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457350.5 (2015-Nov-24.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1888274159363168 7.6824e-08  
q 2.183177409195939 2.0519e-07 au
tp 2457744.999500690484
(2016-Dec-22.49950069)
6.282e-05 TDB
node 129.5151628438416 2.3567e-05 deg
peri 11.56838477603741 2.6844e-05 deg
i 14.85579420037576 7.7548e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      282  
   data-arc span      5701 days (15.61 yr)  
   first obs. used      2004-03-15  
   last obs. used      2019-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59866  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 08:09:46  

Additional Information
 Jupiter MOID = 1.84635 au 
 T_jup = 3.299 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.901862976830794E-15 -1.568216392624972E-14 2.489371712274741E-12 5.615430113375577E-14 5.375623853934405E-13 1.698936295404525E-15
q -1.568216392624972E-14 4.210178709985814E-14 -6.416133582244473E-12 -1.455252962648977E-13 -1.418706817430006E-12 -6.247020083869418E-16
tp 2.489371712274741E-12 -6.416133582244473E-12 3.946323103231227E-9 3.723337172423105E-11 8.538129708248798E-10 8.288351000293563E-12
node 5.615430113375577E-14 -1.455252962648977E-13 3.723337172423105E-11 5.554258563328422E-10 -5.280999119191969E-10 1.042911399733468E-10
peri 5.375623853934405E-13 -1.418706817430006E-12 8.538129708248798E-10 -5.280999119191969E-10 7.205972516627394E-10 -9.937422822142078E-11
i 1.698936295404525E-15 -6.247020083869418E-16 8.288351000293563E-12 1.042911399733468E-10 -9.937422822142078E-11 6.01368271436924E-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 16.0   n/a MPO494654  

312286 (2008 BR20)          Discovered 2008-Jan-30 by CSS at Catalina
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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