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193947 (2001 RA46)
Classification: Main-belt Asteroid          SPK-ID: 2193947
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .172176078564437 5.1312e-08  
a 2.319739404354296 1.2472e-08 au
q 1.920335770421171 1.188e-07 au
i 3.063841809397167 6.304e-06 deg
node 129.4795819248201 0.00010661 deg
peri 262.9915476744303 0.00010829 deg
M 326.4726411703807 2.0133e-05 deg
tp 2458720.686051718173
(2019-Aug-25.18605172)
7.259e-05 TDB
period 1290.497675000833
3.53
1.0407e-05
2.849e-08
d
yr
n .2789621453597486 2.2497e-09 deg/d
Q 2.719143038287422 1.4619e-08 au
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      6667 days (18.25 yr)  
   first obs. used      2001-07-29  
   last obs. used      2019-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55875  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 21:48:50  

Additional Information
 Earth MOID = .92846 au 
 Jupiter MOID = 2.71232 au 
 T_jup = 3.557 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457118.5 (2015-Apr-06.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1725382118465452 5.1543e-08  
q 1.919735032143634 1.195e-07 au
tp 2457427.533407546181
(2016-Feb-09.03340755)
6.8298e-05 TDB
node 129.5644643189678 0.00010662 deg
peri 262.3798927376425 0.00010828 deg
i 3.063889769167383 6.3067e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      6667 days (18.25 yr)  
   first obs. used      2001-07-29  
   last obs. used      2019-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55875  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 21:48:50  

Additional Information
 Jupiter MOID = 2.71232 au 
 T_jup = 3.557 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.656639704782149E-15 -6.136075367364178E-15 -1.016097739124061E-12 1.414337598197402E-14 -2.901754726135572E-13 9.367836501686898E-16
q -6.136075367364178E-15 1.428005826133549E-14 2.593160426208981E-12 -3.209763370747727E-14 7.235410848511338E-13 -2.158052204970579E-15
tp -1.016097739124061E-12 2.593160426208981E-12 4.664573789847931E-9 -3.450678936360564E-11 1.314706742671376E-9 -7.546602484812008E-13
node 1.414337598197402E-14 -3.209763370747727E-14 -3.450678936360564E-11 1.136878463519134E-8 -1.136126791741708E-8 1.904029640550657E-10
peri -2.901754726135572E-13 7.235410848511338E-13 1.314706742671376E-9 -1.136126791741708E-8 1.172465024707342E-8 -1.903218858878414E-10
i 9.367836501686898E-16 -2.158052204970579E-15 -7.546602484812008E-13 1.904029640550657E-10 -1.903218858878414E-10 3.977437060221141E-11

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 16.8   n/a MPO454348  

193947 (2001 RA46)          Discovered 2001-Sep-15 by Ball, L. at Emerald Lane
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

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