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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3212782470304996 1.2624e-07  
a 2.277052573572463 1.2571e-08 au
q 1.545485114338815 2.9459e-07 au
i 7.323252204185568 8.9103e-06 deg
node 17.13469156274698 5.5485e-05 deg
peri 322.3786703589312 5.6787e-05 deg
M 176.4895054338189 9.8794e-06 deg
tp 2458385.217732185535
(2018-Sep-23.71773219)		 3.2379e-05 TDB
period 1255.041289105247
3.44		 1.0393e-05
2.845e-08		 d
yr
n .2868431525919389 2.3754e-09 deg/d
Q 3.008620032806112 1.661e-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 = .545732 au 
 Jupiter MOID = 2.41445 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 = 2.41445 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 17.2   n/a MPO455790  

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

[ hide close-approach data ]
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-24 22:26 < 00:01 Juno 0.0413015977893511 0.041271077289528 0.0413321183590939 8.77025362220431 8.77025358861764 2436562.434878138 0.81553079712941 1524.03932889031 162.859514037171 3.23273462355596 4577.01793509355 T 11 CATAB v2.0f-lin.ifort 2020-Feb-26 04:50:16 2020-Feb-26 04:50
1984-Sep-21 12:25 < 00:01 Iris 0.0272563985946485 0.027251728270444 0.0272610759014203 7.61758343245216 7.61758340476443 2445965.017424340 0.974918186210472 807.594620765885 106.465166481565 74.99387206526 37009.5040275291 T 11 CATAB v2.0f-lin.ifort 2020-Feb-26 04:50:16 2020-Feb-26 04:50
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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