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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723866695882232 4.6089e-08  
a 2.320126678318536 1.0449e-08 au
q 1.920167767220416 1.0376e-07 au
i 3.063959421097135 4.793e-06 deg
node 129.4759656749608 8.8882e-05 deg
peri 262.9792734498426 9.025e-05 deg
M 78.04537361309002 1.3937e-05 deg
tp 2458720.659455644833
(2019-Aug-25.15945564)
4.9808e-05 TDB
period 1290.820855920191
3.53
8.7198e-06
2.387e-08
d
yr
n .278892302017669 1.884e-09 deg/d
Q 2.720085589416655 1.225e-08 au
  Orbit Determination Parameters
   # obs. used (total)      372  
   data-arc span      6760 days (18.51 yr)  
   first obs. used      2001-07-29  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53388  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 22:12:13  

Additional Information
 Earth MOID = .928951 au 
 Jupiter MOID = 2.71328 au 
 T_jup = 3.556 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457570.5 (2016-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723477199132538 4.619e-08  
q 1.919947410256944 1.0395e-07 au
tp 2457427.459369631075
(2016-Feb-08.95936963)
4.9807e-05 TDB
node 129.5630536945305 8.8875e-05 deg
peri 262.3457887530892 9.0242e-05 deg
i 3.063887722001783 4.7929e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      372  
   data-arc span      6760 days (18.51 yr)  
   first obs. used      2001-07-29  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53388  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 22:12:13  

Additional Information
 Jupiter MOID = 2.71328 au 
 T_jup = 3.556 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.133478479313846E-15 -4.787555835133745E-15 5.122011175331927E-14 -1.749710906623638E-14 -8.998487990103354E-15 -1.319211619646665E-15
q -4.787555835133745E-15 1.080533775765353E-14 -1.546189505338375E-13 4.13093849953392E-14 7.50835262222339E-15 2.991393553023152E-15
tp 5.122011175331927E-14 -1.546189505338375E-13 2.480770480336885E-9 -2.825326287757605E-11 7.977323001670825E-10 -1.086270567680132E-12
node -1.749710906623638E-14 4.13093849953392E-14 -2.825326287757605E-11 7.898692739410335E-9 -7.895425591637471E-9 -4.44114824425962E-11
peri -8.998487990103354E-15 7.50835262222339E-15 7.977323001670825E-10 -7.895425591637471E-9 8.143645429492388E-9 4.401671424934229E-11
i -1.319211619646665E-15 2.991393553023152E-15 -1.086270567680132E-12 -4.44114824425962E-11 4.401671424934229E-11 2.297170163088908E-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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