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305704 (2009 BG172)
Classification: Main-belt Asteroid          SPK-ID: 2305704
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09860391020907017 6.1517e-08  
a 2.596420198982784 2.9549e-08 au
q 2.340403014817269 1.4864e-07 au
i 5.099584108770375 5.6692e-06 deg
node 161.428082778498 7.0958e-05 deg
peri 102.5054314534134 8.2399e-05 deg
M 136.6816640650102 3.7931e-05 deg
tp 2458420.312119896841
(2018-Oct-28.81211990)
0.00016221 TDB
period 1528.132089010806
4.18
2.6086e-05
7.142e-08
d
yr
n .235581729216246 4.0216e-09 deg/d
Q 2.852437383148298 3.2462e-08 au
  Orbit Determination Parameters
   # obs. used (total)      129  
   data-arc span      6259 days (17.14 yr)  
   first obs. used      2002-08-07  
   last obs. used      2019-09-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51996  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 07:40:25  

Additional Information
 Earth MOID = 1.33131 au 
 Jupiter MOID = 2.21332 au 
 T_jup = 3.404 
[ show covariance matrix ]

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 17.5   n/a MPO494623  

305704 (2009 BG172)          Discovered 2009-Jan-18 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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