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66461 (1999 RQ11)
Classification: Main-belt Asteroid          SPK-ID: 2066461
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1757153283390079 4.9093e-08  
a 2.545617214114527 1.3935e-08 au
q 2.098313249510962 1.2491e-07 au
i 4.423661195467308 4.8476e-06 deg
node 245.4956688129938 5.5031e-05 deg
peri 18.11347820566436 5.6236e-05 deg
M 90.17354850386339 1.4479e-05 deg
tp 2458628.909386425156
(2019-May-25.40938643)
5.8234e-05 TDB
period 1483.501793003215
4.06
1.2181e-05
3.335e-08
d
yr
n .2426690696957046 1.9925e-09 deg/d
Q 2.992921178718091 1.6383e-08 au
  Orbit Determination Parameters
   # obs. used (total)      680  
   data-arc span      9609 days (26.31 yr)  
   first obs. used      1994-07-05  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54863  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:17:55  

Additional Information
 Earth MOID = 1.08323 au 
 Jupiter MOID = 2.08356 au 
 T_jup = 3.417 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456936.5 (2014-Oct-06.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1749892236873233 4.9075e-08  
q 2.10054251440052 1.2481e-07 au
tp 2457145.691071327205
(2015-May-03.19107133)
5.4063e-05 TDB
node 245.5157615488011 5.5037e-05 deg
peri 18.35284279019754 5.6249e-05 deg
i 4.422496750269246 4.8469e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      680  
   data-arc span      9609 days (26.31 yr)  
   first obs. used      1994-07-05  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54863  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:17:55  

Additional Information
 Jupiter MOID = 2.08356 au 
 T_jup = 3.417 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.408359660583929E-15 -6.098806304705392E-15 7.401812458661513E-13 3.308888265504095E-14 8.103033523634213E-14 -1.322848142915777E-16
q -6.098806304705392E-15 1.557663300657175E-14 -1.725243596942851E-12 -8.814825259230795E-14 -1.749954236135108E-13 4.439014993624854E-16
tp 7.401812458661513E-13 -1.725243596942851E-12 2.922832383624305E-9 5.58169809386408E-12 6.401778308014338E-10 -4.462715685947955E-13
node 3.308888265504095E-14 -8.814825259230795E-14 5.58169809386408E-12 3.02903614363201E-9 -3.0191796544711E-9 3.591872985533716E-11
peri 8.103033523634213E-14 -1.749954236135108E-13 6.401778308014338E-10 -3.0191796544711E-9 3.163980370000301E-9 -3.58883494635572E-11
i -1.322848142915777E-16 4.439014993624854E-16 -4.462715685947955E-13 3.591872985533716E-11 -3.58883494635572E-11 2.349212166943197E-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 15.3   n/a MPO436245  
diameter diameter 2.472 km 0.438 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.200   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66461 (1999 RQ11)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 RQ11 = 2002 EK146 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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