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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2042736703556177 4.8875e-08  
a 2.399651462700641 2.1453e-08 au
q 1.909465850840554 1.2248e-07 au
i 2.621580700917672 8.3013e-06 deg
node 83.99806479960776 0.0001255 deg
peri 259.9398480328372 0.00012736 deg
M 150.0065070617619 2.4624e-05 deg
tp 2458434.745163357874
(2018-Nov-12.24516336)
8.8454e-05 TDB
period 1357.752708069577
3.72
1.8207e-05
4.985e-08
d
yr
n .2651440117632614 3.5555e-09 deg/d
Q 2.889837074560727 2.5835e-08 au
  Orbit Determination Parameters
   # obs. used (total)      146  
   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      .63003  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:56:41  

Additional Information
 Earth MOID = .903922 au 
 Jupiter MOID = 2.51998 au 
 T_jup = 3.497 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456834.5 (2014-Jun-26.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2056194671644238 4.9066e-08  
q 1.905725634527061 1.2307e-07 au
tp 2457075.716686305002
(2015-Feb-22.21668631)
7.8481e-05 TDB
node 84.05943875676351 0.00012557 deg
peri 259.6115992201557 0.00012739 deg
i 2.621312920354057 8.2972e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      146  
   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      .63003  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:56:41  

Additional Information
 Jupiter MOID = 2.51998 au 
 T_jup = 3.497 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.407493034226646E-15 -5.983989189487081E-15 1.088404173437969E-16 -8.79411880989128E-15 2.032864048758464E-14 -1.62603382202986E-16
q -5.983989189487081E-15 1.514631573927697E-14 5.279311377002398E-13 2.111550188082941E-14 7.388129710094504E-14 5.990527396732817E-16
tp 1.088404173437969E-16 5.279311377002398E-13 6.159321716182411E-9 -1.435895293804367E-11 1.699963691453717E-9 -2.250811068158082E-13
node -8.79411880989128E-15 2.111550188082941E-14 -1.435895293804367E-11 1.576898155032575E-8 -1.575620517856294E-8 -2.289903065322031E-10
peri 2.032864048758464E-14 7.388129710094504E-14 1.699963691453717E-9 -1.575620517856294E-8 1.622866160902402E-8 2.28630483446182E-10
i -1.62603382202986E-16 5.990527396732817E-16 -2.250811068158082E-13 -2.289903065322031E-10 2.28630483446182E-10 6.884374935719752E-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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