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187987 (2001 RJ43)
Classification: Main-belt Asteroid          SPK-ID: 2187987
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1776205442519129 5.4452e-08  
a 2.425166601830441 1.2768e-08 au
q 1.994407190111756 1.2873e-07 au
i 3.229583078418747 6.1815e-06 deg
node 128.68849826 0.00014737 deg
peri 174.455588823573 0.00014954 deg
M 70.85384891102447 2.5403e-05 deg
tp 2458928.998807736154
(2020-Mar-20.49880774)
9.6802e-05 TDB
period 1379.465346162396
3.78
1.0894e-05
2.983e-08
d
yr
n .2609706731680518 2.061e-09 deg/d
Q 2.855926013549126 1.5036e-08 au
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      7043 days (19.28 yr)  
   first obs. used      2001-08-24  
   last obs. used      2020-12-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61399  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:37  

Additional Information
 Earth MOID = .977137 au 
 Jupiter MOID = 2.37335 au 
 T_jup = 3.487 
[ 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 17.40   n/a E2021B55  

187987 (2001 RJ43)          Discovered 2001-Sep-12 by Ball, L. at Emerald Lane
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

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