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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 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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1958-Dec-22 23:01 00:04 Thisb 0.023018191721445 0.0230075253938889 0.0230288589623051 2.28595225705019 2.28595212747066 2436560.458757944 4.42847594909368 578.034473939013 43.1394063760104 23.3711568078658 32076.3968020548 T 19 CATAB v2.0f-lin.ifort 2020-Nov-12 22:17:56 2020-Nov-12 22:17
2109-Jun-04 20:35 00:02 Iris 0.043094925026168 0.043076012858021 0.043113839768101 7.57087284757343 7.57087282995363 2491511.357921495 1.86420714127851 1079.60505657091 41.0816650698507 29.1577425611114 76622.0272168536 T 19 CATAB v2.0f-lin.ifort 2020-Nov-12 22:17:56 2020-Nov-12 22:17

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