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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 ]

[ hide orbit diagram ]

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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3214527734948083 1.2625e-07  
a 2.27671384326272 1.2559e-08 au
q 1.544857863891894 2.9455e-07 au
i 7.324317024307227 8.9117e-06 deg
node 17.13065619738057 5.5476e-05 deg
peri 322.3975836022793 5.6777e-05 deg
M 233.8452921165229 1.0104e-05 deg
tp 2459640.205664800348
(2022-Mar-01.70566480)		 3.7184e-05 TDB
period 1254.761252939791
3.44		 1.0382e-05
2.842e-08		 d
yr
n .2869071699150359 2.3739e-09 deg/d
Q 3.008569822633546 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60872  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:34:03  

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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .322600341839509 1.2662e-07  
q 1.541700893112618 2.9567e-07 au
tp 2457129.670958715944
(2015-Apr-17.17095872)		 2.9892e-05 TDB
node 17.1729929992667 5.5473e-05 deg
peri 322.2726664635842 5.675e-05 deg
i 7.328277759651863 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60872  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:34:03  

Additional Information
 Jupiter MOID = 2.41511 au 
 T_jup = 3.528 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.603383720173278E-14 -3.743488334219342E-14 1.25079209313377E-14 -1.675254422342638E-13 5.797470192168839E-13 -1.654925183915435E-13
q -3.743488334219342E-14 8.742238796180701E-14 -2.478880729861673E-14 3.940896111749273E-13 -1.359022054113732E-12 3.873810652438381E-13
tp 1.25079209313377E-14 -2.478880729861673E-14 8.935437065391687E-10 5.269072772203139E-12 3.623724204039952E-10 8.419655749630197E-12
node -1.675254422342638E-13 3.940896111749273E-13 5.269072772203139E-12 3.077247817847139E-9 -3.052676916482827E-9 -1.72658212756085E-10
peri 5.797470192168839E-13 -1.359022054113732E-12 3.623724204039952E-10 -3.052676916482827E-9 3.220539454984882E-9 1.69852609779898E-10
i -1.654925183915435E-13 3.873810652438381E-13 8.419655749630197E-12 -1.72658212756085E-10 1.69852609779898E-10 7.951432771201752E-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

[ 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 12 CATAB v2.0f-lin.ifort 2021-Apr-14 11:34:04 2021-Apr-14 11:34
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 12 CATAB v2.0f-lin.ifort 2021-Apr-14 11:34:04 2021-Apr-14 11:34
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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