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193873 (2001 QX157)
Classification: Main-belt Asteroid          SPK-ID: 2193873
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1722621823196696 3.2735e-08  
a 2.198833090596747 8.8943e-09 au
q 1.820057303853848 7.4405e-08 au
i 1.844504313194066 5.2362e-06 deg
node 189.1721175160149 0.00010736 deg
peri 59.48295199227631 0.00010902 deg
M 39.47340598857573 1.6036e-05 deg
tp 2459069.916313896301
(2020-Aug-08.41631390)
5.3136e-05 TDB
period 1190.931611296403
3.26
7.226e-06
1.978e-08
d
yr
n .3022843600633941 1.8341e-09 deg/d
Q 2.577608877339647 1.0426e-08 au
  Orbit Determination Parameters
   # obs. used (total)      413  
   data-arc span      6867 days (18.80 yr)  
   first obs. used      2001-08-23  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56357  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 06:24:58  

Additional Information
 Earth MOID = .805523 au 
 Jupiter MOID = 2.44867 au 
 T_jup = 3.646 
[ show covariance matrix ]

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 17.04   n/a E2021B55  

193873 (2001 QX157)          Discovered 2001-Aug-23 by LONEOS at Anderson Mesa
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

[ 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
2009-Jun-09 18:47 00:02 Vesta 0.0220251322617588 0.0220243385583358 0.0220259259927887 2.44207176529684 2.44206955313019 2454992.282676276 1.5685969339655 95.8061891826287 35.1435728836232 -78.8465410554988 91196.2678723399 T 16 CATAB v2.0f-lin.ifort 2020-Nov-12 06:24:59 2020-Nov-12 06:25
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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