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393417 (2001 QB179)
Classification: Mars-crossing Asteroid          SPK-ID: 2393417
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3214527740389549 1.2625e-07  
a 2.276713844096832 1.2559e-08 au
q 1.544857863219012 2.9455e-07 au
i 7.324316999889096 8.9117e-06 deg
node 17.13065657046326 5.5476e-05 deg
peri 322.3975833130832 5.6777e-05 deg
M 233.8452920919871 1.0104e-05 deg
tp 2459640.205665127506
(2022-Mar-01.70566513)
3.7184e-05 TDB
period 1254.761253629345
3.44
1.0382e-05
2.842e-08
d
yr
n .2869071697573662 2.3739e-09 deg/d
Q 3.008569824974651 1.6596e-08 au
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      6736 days (18.44 yr)  
   first obs. used      2001-08-24  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60869  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:50:14  

Additional Information
 Earth MOID = .543323 au 
 Jupiter MOID = 2.41511 au 
 T_jup = 3.528 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456764.5 (2014-Apr-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3226003429304876 1.2662e-07  
q 1.541700890240529 2.9567e-07 au
tp 2457129.670959030165
(2015-Apr-17.17095903)
2.9892e-05 TDB
node 17.17299331174567 5.5473e-05 deg
peri 322.272666251018 5.675e-05 deg
i 7.328277744080565 8.9171e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      6736 days (18.44 yr)  
   first obs. used      2001-08-24  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60869  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:50:14  

Additional Information
 Jupiter MOID = 2.41511 au 
 T_jup = 3.528 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.603383111878706E-14 -3.743487116663635E-14 1.250844618131202E-14 -1.675254695988351E-13 5.797473731870961E-13 -1.654924310051346E-13
q -3.743487116663635E-14 8.742236444504601E-14 -2.478996743407019E-14 3.940897177259626E-13 -1.359022771255962E-12 3.873808839674906E-13
tp 1.250844618131202E-14 -2.478996743407019E-14 8.935433219401444E-10 5.269025616235939E-12 3.623719191748282E-10 8.419655748988917E-12
node -1.675254695988351E-13 3.940897177259626E-13 5.269025616235939E-12 3.077247812201819E-9 -3.052676920398305E-9 -1.726581453258816E-10
peri 5.797473731870961E-13 -1.359022771255962E-12 3.623719191748282E-10 -3.052676920398305E-9 3.220539358086202E-9 1.698525423582305E-10
i -1.654924310051346E-13 3.873808839674906E-13 8.419655748988917E-12 -1.726581453258816E-10 1.698525423582305E-10 7.951431068771136E-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 17.22   n/a E2021B25  

393417 (2001 QB179)          Discovered 2001-Aug-27 by NEAT at Palomar
Reference: Last Updated: 2014-05-15

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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