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187991 (2001 RJ153)
Classification: Main-belt Asteroid          SPK-ID: 2187991
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2037574078170005 3.4709e-08  
a 2.358188209960423 1.1315e-08 au
q 1.877689893154275 7.9289e-08 au
i 6.526520758642807 4.1662e-06 deg
node 116.0786160397003 3.4807e-05 deg
peri 181.2886461125217 3.6841e-05 deg
M 157.1284911144981 1.079e-05 deg
tp 2458623.177396110317
(2019-May-19.67739611)		 3.93e-05 TDB
period 1322.714524438713
3.62		 9.52e-06
2.606e-08		 d
yr
n .2721675715723799 1.9589e-09 deg/d
Q 2.838686526766572 1.3621e-08 au
   Orbit Determination Parameters
   # obs. used (total)      390  
   data-arc span      7108 days (19.46 yr)  
   first obs. used      2001-08-03  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54848  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:39  

Additional Information
 Earth MOID = .859864 au 
 Jupiter MOID = 2.37535 au 
 T_jup = 3.516 
[ 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 16.6   n/a MPO436930  

187991 (2001 RJ153)          Discovered 2001-Sep-12 by LINEAR at Socorro
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

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