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136665 (1995 QB9)
Classification: Main-belt Asteroid          SPK-ID: 2136665
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0384306595985026 4.2394e-08  
a 3.09346165983466 2.9719e-08 au
q 2.974577887804536 1.3975e-07 au
i 11.4673317704002 5.2149e-06 deg
node 175.4759112418842 2.4724e-05 deg
peri 69.66657415706779 7.5771e-05 deg
M 270.1281746937009 7.3091e-05 deg
tp 2459496.619840160426
(2021-Oct-09.11984016)
0.00040521 TDB
period 1987.309613986833
5.44
2.8638e-05
7.841e-08
d
yr
n .1811494280842266 2.6105e-09 deg/d
Q 3.212345431864785 3.0861e-08 au
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      9065 days (24.82 yr)  
   first obs. used      1995-06-28  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56637  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 22:40:17  

Additional Information
 Earth MOID = 1.9876 au 
 Jupiter MOID = 1.79613 au 
 T_jup = 3.192 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457246.5 (2015-Aug-12.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .038588179495795 4.2451e-08  
q 2.973747868915307 1.3993e-07 au
tp 2457497.696994205524
(2016-Apr-19.19699421)
0.00039662 TDB
node 175.5023102262755 2.4721e-05 deg
peri 67.56177122054879 7.539e-05 deg
i 11.46798648313726 5.2155e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      9065 days (24.82 yr)  
   first obs. used      1995-06-28  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56637  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 22:40:17  

Additional Information
 Jupiter MOID = 1.79613 au 
 T_jup = 3.192 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.802084500968043E-15 -5.821034249252329E-15 -4.696055480202053E-13 1.256088607812089E-15 -6.977700701082934E-14 -9.709097932696741E-16
q -5.821034249252329E-15 1.958010460016589E-14 3.621895864829813E-12 -5.866300123390151E-16 5.80844416080385E-13 4.419418568542266E-15
tp -4.696055480202053E-13 3.621895864829813E-12 1.573091675299402E-7 8.790527310573009E-11 2.828105402631883E-8 1.729869485966335E-11
node 1.256088607812089E-15 -5.866300123390151E-16 8.790527310573009E-11 6.111326431584479E-10 -5.824784301427758E-10 -1.565823833041703E-11
peri -6.977700701082934E-14 5.80844416080385E-13 2.828105402631883E-8 -5.824784301427758E-10 5.683635059611765E-9 1.84460613295752E-11
i -9.709097932696741E-16 4.419418568542266E-15 1.729869485966335E-11 -1.565823833041703E-11 1.84460613295752E-11 2.720166191056262E-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 15.4   n/a MPO422494  
diameter diameter 3.080 km 0.313 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.155   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136665 (1995 QB9)          Discovered 1995-Aug-28 by Spacewatch at Kitt Peak
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

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