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305637 (2009 BG31)
Classification: Main-belt Asteroid          SPK-ID: 2305637
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2044513328826841 4.8834e-08  
a 2.399312487859091 2.1456e-08 au
q 1.908769851714231 1.2234e-07 au
i 2.621543456383025 8.2927e-06 deg
node 83.99368119189251 0.00012538 deg
peri 259.9598064408749 0.00012724 deg
M 203.0162920069989 2.5043e-05 deg
tp 2459792.444147026486
(2022-Jul-31.94414703)
9.9601e-05 TDB
period 1357.465023943987
3.72
1.8209e-05
4.985e-08
d
yr
n .2652002030623624 3.5574e-09 deg/d
Q 2.889855124003951 2.5843e-08 au
  Orbit Determination Parameters
   # obs. used (total)      148  
   data-arc span      7558 days (20.69 yr)  
   first obs. used      1999-05-16  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6266  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:11:16  

Additional Information
 Earth MOID = .901413 au 
 Jupiter MOID = 2.52048 au 
 T_jup = 3.497 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456838.5 (2014-Jun-30.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2056190066452967 4.9021e-08  
q 1.90572934512823 1.2293e-07 au
tp 2457075.715816623688
(2015-Feb-22.21581662)
7.8457e-05 TDB
node 84.05944520926157 0.00012544 deg
peri 259.6111430228595 0.00012725 deg
i 2.621309973310111 8.2887e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      148  
   data-arc span      7558 days (20.69 yr)  
   first obs. used      1999-05-16  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6266  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:11:16  

Additional Information
 Jupiter MOID = 2.52048 au 
 T_jup = 3.497 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.403060154404862E-15 -5.971830256418018E-15 -4.091125425981329E-15 -8.818381708054063E-15 1.867157341855781E-14 -1.577972040659793E-16
q -5.971830256418018E-15 1.511297071712119E-14 5.394203629248149E-13 2.11941860774438E-14 7.840173195177187E-14 5.848947503922515E-16
tp -4.091125425981329E-15 5.394203629248149E-13 6.155465356613069E-9 -1.41518554422328E-11 1.698200666250128E-9 -2.352444961264169E-13
node -8.818381708054063E-15 2.11941860774438E-14 -1.41518554422328E-11 1.573477704061217E-8 -1.572197937766386E-8 -2.267951970014994E-10
peri 1.867157341855781E-14 7.840173195177187E-14 1.698200666250128E-9 -1.572197937766386E-8 1.619378833369282E-8 2.264352585353519E-10
i -1.577972040659793E-16 5.848947503922515E-16 -2.352444961264169E-13 -2.267951970014994E-10 2.264352585353519E-10 6.870304315206502E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.5   n/a MPO455251  

305637 (2009 BG31)          Discovered 2009-Jan-16 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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