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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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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1757152743625658 5.6112e-08  
a 2.545617231889408 1.6513e-08 au
q 2.098313401565886 1.4646e-07 au
i 4.423661944111879 5.3196e-06 deg
node 245.4956803439737 6.7272e-05 deg
peri 18.11345304715322 6.8459e-05 deg
M 90.17355399104419 1.4733e-05 deg
tp 2458628.909359921400
(2019-May-25.40935992)
5.9703e-05 TDB
period 1483.501808541138
4.06
1.4435e-05
3.952e-08
d
yr
n .2426690671540339 2.3613e-09 deg/d
Q 2.992921062212931 1.9415e-08 au
  Orbit Determination Parameters
   # obs. used (total)      630  
   data-arc span      9183 days (25.14 yr)  
   first obs. used      1994-07-05  
   last obs. used      2019-08-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55518  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 13:00:39  

Additional Information
 Earth MOID = 1.08323 au 
 Jupiter MOID = 2.08356 au 
 T_jup = 3.417 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456368.5 (2013-Mar-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1743432637730686 5.5867e-08  
q 2.105034961430472 1.4555e-07 au
tp 2455656.764057718170
(2011-Apr-05.26405772)
5.9786e-05 TDB
node 245.5809330939957 6.7087e-05 deg
peri 17.67401918075647 6.8304e-05 deg
i 4.42677395426934 5.3217e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      630  
   data-arc span      9183 days (25.14 yr)  
   first obs. used      1994-07-05  
   last obs. used      2019-08-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55518  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 13:00:39  

Additional Information
 Jupiter MOID = 2.08356 au 
 T_jup = 3.417 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.121154184593783E-15 -8.096674843901319E-15 1.443092606381815E-12 4.443121502917579E-14 2.482767171806046E-13 -6.246669853381079E-16
q -8.096674843901319E-15 2.118438572292056E-14 -3.845338143317941E-12 -1.170340175627395E-13 -6.445772314668799E-13 1.666669836565604E-15
tp 1.443092606381815E-12 -3.845338143317941E-12 3.574394494623741E-9 2.746140372288109E-11 7.901883725523796E-10 -1.431611142223322E-13
node 4.443121502917579E-14 -1.170340175627395E-13 2.746140372288109E-11 4.500641965432698E-9 -4.48172034271156E-9 1.192246452288506E-10
peri 2.482767171806046E-13 -6.445772314668799E-13 7.901883725523796E-10 -4.48172034271156E-9 4.665447779469796E-9 -1.188982397335354E-10
i -6.246669853381079E-16 1.666669836565604E-15 -1.431611142223322E-13 1.192246452288506E-10 -1.188982397335354E-10 2.832072047543521E-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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