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181784 (1998 BO20)
Classification: Main-belt Asteroid          SPK-ID: 2181784
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135912097434559 4.6128e-08  
a 2.157218395916117 7.8949e-09 au
q 1.864026319102742 9.6629e-08 au
i 4.094521616200212 5.8773e-06 deg
node 300.3072338754235 6.3657e-05 deg
peri 115.5163017545246 6.9539e-05 deg
M 132.0882044894953 2.5133e-05 deg
tp 2458775.879325820089
(2019-Oct-19.37932582)
8.0504e-05 TDB
period 1157.283069260926
3.17
6.353e-06
1.739e-08
d
yr
n .3110734180444775 1.7077e-09 deg/d
Q 2.450410472729491 8.9679e-09 au
  Orbit Determination Parameters
   # obs. used (total)      438  
   data-arc span      8039 days (22.01 yr)  
   first obs. used      1998-01-22  
   last obs. used      2020-01-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55368  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:01  

Additional Information
 Earth MOID = .879503 au 
 Jupiter MOID = 2.85588 au 
 T_jup = 3.685 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.0   n/a MPO502985  

181784 (1998 BO20)          Discovered 1998-Jan-22 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1998 BO20 = 2003 UP186 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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