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193902 (2001 QJ242)
Classification: Main-belt Asteroid          SPK-ID: 2193902
[ 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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2421734060449548 5.1526e-08  
a 2.354168639598722 6.6849e-09 au
q 1.784051601742882 1.2233e-07 au
i 5.349148986474264 5.9638e-06 deg
node 171.0983383886725 4.2932e-05 deg
peri 209.9689772929419 4.4491e-05 deg
M 51.97953642315195 9.2027e-06 deg
tp 2458810.004516582707
(2019-Nov-22.50451658)		 3.3532e-05 TDB
period 1319.33408316586
3.61		 5.6196e-06
1.539e-08		 d
yr
n .272864928294847 1.1622e-09 deg/d
Q 2.924285677454562 8.3039e-09 au
   Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      6761 days (18.51 yr)  
   first obs. used      2001-07-24  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51938  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 22:11:29  

Additional Information
 Earth MOID = .788811 au 
 Jupiter MOID = 2.53705 au 
 T_jup = 3.510 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457410.5 (2016-Jan-23.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .243566232924898 5.1928e-08  
q 1.780284829465202 1.2351e-07 au
tp 2457489.095884268445
(2016-Apr-10.59588427)		 3.1866e-05 TDB
node 171.2029433390486 4.2846e-05 deg
peri 209.5193033917486 4.4365e-05 deg
i 5.355074001889326 5.9733e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      460  
   data-arc span      6761 days (18.51 yr)  
   first obs. used      2001-07-24  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51938  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 22:11:29  

Additional Information
 Jupiter MOID = 2.53705 au 
 T_jup = 3.510 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.696516636571263E-15 -6.408530931069276E-15 -6.629727048455955E-13 2.196334805677344E-14 -2.559780089534872E-13 -6.854605435973149E-15
q -6.408530931069276E-15 1.525506623855029E-14 1.578032197050901E-12 -5.296628651134746E-14 6.079786711229849E-13 1.658021250092258E-14
tp -6.629727048455955E-13 1.578032197050901E-12 1.015443241292101E-9 -1.372869264431275E-11 3.772880587199455E-10 5.371367767265598E-13
node 2.196334805677344E-14 -5.296628651134746E-14 -1.372869264431275E-11 1.835802291483762E-9 -1.831073556966536E-9 6.320376814564832E-11
peri -2.559780089534872E-13 6.079786711229849E-13 3.772880587199455E-10 -1.831073556966536E-9 1.968247998574393E-9 -6.279889175567222E-11
i -6.854605435973149E-15 1.658021250092258E-14 5.371367767265598E-13 6.320376814564832E-11 -6.279889175567222E-11 3.568041932150004E-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 16.5   n/a MPO494073  
diameter diameter 3.152 km 1.271 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

193902 (2001 QJ242)          Discovered 2001-Aug-24 by LINEAR at Socorro
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

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