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187764 (1998 BF20)
Classification: Main-belt Asteroid          SPK-ID: 2187764
[ 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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05739246921926679 4.0058e-08  
a 2.797907380237949 2.1023e-08 au
q 2.637328567039283 1.2021e-07 au
i 5.353662876079035 4.657e-06 deg
node 119.537660566752 4.6893e-05 deg
peri 298.5167676711422 6.4688e-05 deg
M 16.684357076485 4.3299e-05 deg
tp 2459121.276248671491
(2020-Sep-28.77624867)		 0.00020556 TDB
period 1709.418609750335
4.68		 1.9267e-05
5.275e-08		 d
yr
n .2105979178807342 2.3736e-09 deg/d
Q 2.958486193436615 2.223e-08 au
   Orbit Determination Parameters
   # obs. used (total)      376  
   data-arc span      8384 days (22.95 yr)  
   first obs. used      1998-01-22  
   last obs. used      2021-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47569  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 11:57:18  

Additional Information
 Earth MOID = 1.65423 au 
 Jupiter MOID = 2.2334 au 
 T_jup = 3.318 
[ 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 16.1   n/a MPO449935  

187764 (1998 BF20)          Discovered 1998-Jan-22 by Spacewatch at Kitt Peak
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

Alternate Designations
 1998 BF20 = 2005 PM11 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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