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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2422814848914181 5.14e-08  
a 2.354249823562315 6.6918e-09 au
q 1.783858680504278 1.2204e-07 au
i 5.349574345934131 5.9251e-06 deg
node 171.0934250823936 4.2279e-05 deg
peri 209.9753704867387 4.3818e-05 deg
M 106.5365482102974 9.1939e-06 deg
tp 2458810.042861283095
(2019-Nov-22.54286128)
3.326e-05 TDB
period 1319.402329993074
3.61
5.6255e-06
1.54e-08
d
yr
n .2728508142030412 1.1633e-09 deg/d
Q 2.924640966620352 8.3131e-09 au
  Orbit Determination Parameters
   # obs. used (total)      467  
   data-arc span      7092 days (19.42 yr)  
   first obs. used      2001-07-24  
   last obs. used      2020-12-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52205  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 12:09:42  

Additional Information
 Earth MOID = .787272 au 
 Jupiter MOID = 2.53786 au 
 T_jup = 3.510 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457477.5 (2016-Mar-30.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2435560811367641 5.1811e-08  
q 1.780298717662668 1.2321e-07 au
tp 2457489.084413435785
(2016-Apr-10.58441344)
3.155e-05 TDB
node 171.2029079533058 4.22e-05 deg
peri 209.5138446073918 4.37e-05 deg
i 5.355078577304543 5.9341e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      467  
   data-arc span      7092 days (19.42 yr)  
   first obs. used      2001-07-24  
   last obs. used      2020-12-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52205  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 12:09:42  

Additional Information
 Jupiter MOID = 2.53786 au 
 T_jup = 3.510 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.684404795956446E-15 -6.378347969333794E-15 -6.786273787935389E-13 2.381978787233328E-14 -2.651094010192372E-13 -6.597331797237696E-15
q -6.378347969333794E-15 1.517991168583138E-14 1.6166948929383E-12 -5.74165044427596E-14 6.303646810332937E-13 1.595684055634299E-14
tp -6.786273787935389E-13 1.6166948929383E-12 9.95426266408793E-10 -1.399089382775862E-11 3.68282799340632E-10 6.219763267498988E-13
node 2.381978787233328E-14 -5.74165044427596E-14 -1.399089382775862E-11 1.78085942865497E-9 -1.776469685619151E-9 5.814463744105681E-11
peri -2.651094010192372E-13 6.303646810332937E-13 3.68282799340632E-10 -1.776469685619151E-9 1.909690880948758E-9 -5.772037405372316E-11
i -6.597331797237696E-15 1.595684055634299E-14 6.219763267498988E-13 5.814463744105681E-11 -5.772037405372316E-11 3.521320524541957E-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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