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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1757152999447611 5.6193e-08  
a 2.545617232663817 1.8006e-08 au
q 2.098313337081742 1.4662e-07 au
i 4.423659250781469 5.3675e-06 deg
node 245.4956080148315 6.8557e-05 deg
peri 18.11352194466578 6.9798e-05 deg
M 90.17355583085568 1.6099e-05 deg
tp 2458628.909352170270
(2019-May-25.40935217)
6.4813e-05 TDB
period 1483.501809218088
4.06
1.574e-05
4.309e-08
d
yr
n .2426690670432994 2.5748e-09 deg/d
Q 2.992921128245893 2.117e-08 au
  Orbit Determination Parameters
   # obs. used (total)      577  
   data-arc span      8648 days (23.68 yr)  
   first obs. used      1994-07-05  
   last obs. used      2018-03-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56157  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 01:56:47  

Additional Information
 Earth MOID = 1.08323 au 
 Jupiter MOID = 2.08356 au 
 T_jup = 3.417 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456357.5 (2013-Mar-06.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1743516404750118 5.5935e-08  
q 2.104983294321773 1.4569e-07 au
tp 2455656.676810762003
(2011-Apr-05.17681076)
6.1313e-05 TDB
node 245.5811407986159 6.8364e-05 deg
peri 17.65594260126145 6.9637e-05 deg
i 4.426879737152354 5.3697e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      577  
   data-arc span      8648 days (23.68 yr)  
   first obs. used      1994-07-05  
   last obs. used      2018-03-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56157  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 01:56:47  

Additional Information
 Jupiter MOID = 2.08356 au 
 T_jup = 3.417 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.12875408940334E-15 -8.107103196869898E-15 1.446962609358141E-12 4.261645135542376E-14 2.527349424579242E-13 -3.850965426841032E-16
q -8.107103196869898E-15 2.122471154542579E-14 -3.783647261641081E-12 -1.122576213372598E-13 -6.373853655796383E-13 1.06492488358901E-15
tp 1.446962609358141E-12 -3.783647261641081E-12 3.759334932246347E-9 2.581205009835321E-11 8.365411985691565E-10 3.721728842927643E-14
node 4.261645135542376E-14 -1.122576213372598E-13 2.581205009835321E-11 4.67364549901692E-9 -4.654540654051303E-9 1.177233937174218E-10
peri 2.527349424579242E-13 -6.373853655796383E-13 8.365411985691565E-10 -4.654540654051303E-9 4.849285333628364E-9 -1.173581190308986E-10
i -3.850965426841032E-16 1.06492488358901E-15 3.721728842927643E-14 1.177233937174218E-10 -1.173581190308986E-10 2.88337944445816E-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

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