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109741 (2001 RA64)
Classification: Main-belt Asteroid          SPK-ID: 2109741
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2268610177084025 4.0693e-08  
a 3.13726529754778 2.8558e-08 au
q 2.425542099324837 1.2945e-07 au
i 20.51038254057433 6.6394e-06 deg
node 341.4579571069826 1.2678e-05 deg
peri 256.3629945600316 1.8877e-05 deg
M 237.615989377242 1.4786e-05 deg
tp 2459690.497434255852
(2022-Apr-20.99743426)
8.691e-05 TDB
period 2029.669358506179
5.56
2.7713e-05
7.587e-08
d
yr
n .1773687908778192 2.4218e-09 deg/d
Q 3.848988495770724 3.5037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      500  
   data-arc span      10692 days (29.27 yr)  
   first obs. used      1990-10-10  
   last obs. used      2020-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57565  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:31:57  

Additional Information
 Earth MOID = 1.51148 au 
 Jupiter MOID = 1.64873 au 
 T_jup = 3.075 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456882.5 (2014-Aug-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2294659520760834 4.0321e-08  
q 2.414076953318099 1.2835e-07 au
tp 2457660.420211695199
(2016-Sep-28.92021170)
7.8266e-05 TDB
node 341.5331237798801 1.2694e-05 deg
peri 256.4311934680601 1.8829e-05 deg
i 20.51206392379325 6.6395e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      500  
   data-arc span      10692 days (29.27 yr)  
   first obs. used      1990-10-10  
   last obs. used      2020-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57565  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:31:57  

Additional Information
 Jupiter MOID = 1.64873 au 
 T_jup = 3.075 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.625754061122472E-15 -5.100279556872167E-15 -7.619827711843053E-13 1.187699309024596E-15 -1.0473001689274E-13 5.911011164656441E-16
q -5.100279556872167E-15 1.647483192997802E-14 2.587637171182249E-12 -3.691802788024049E-15 3.194469008099224E-13 -2.259656336309973E-15
tp -7.619827711843053E-13 2.587637171182249E-12 6.125627389995319E-9 2.337598683222107E-12 1.09224122454179E-9 1.621448538300847E-11
node 1.187699309024596E-15 -3.691802788024049E-15 2.337598683222107E-12 1.611497381605891E-10 -1.50071143066942E-10 -3.153402339774264E-12
peri -1.0473001689274E-13 3.194469008099224E-13 1.09224122454179E-9 -1.50071143066942E-10 3.545243894972654E-10 5.789724743682816E-12
i 5.911011164656441E-16 -2.259656336309973E-15 1.621448538300847E-11 -3.153402339774264E-12 5.789724743682816E-12 4.408339854768967E-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 14.6   n/a MPO493619  
diameter diameter 7.372 km 0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109741 (2001 RA64)          Discovered 2001-Sep-10 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 2001 RA64 = 1999 CL41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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