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JPL Small-Body Database Browser
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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1719595616039457 4.8458e-08  
a 2.198653104144559 1.7996e-08 au
q 1.820573680236707 9.9154e-08 au
i 1.844372963749796 5.9538e-06 deg
node 189.1954835398192 0.00015759 deg
peri 59.38185878771098 0.00015922 deg
M 218.1403160930103 2.7522e-05 deg
tp 2459069.734552039742
(2020-Aug-08.23455204)
9.4914e-05 TDB
period 1190.785387940538
3.26
1.4619e-05
4.002e-08
d
yr
n .3023214792907557 3.7117e-09 deg/d
Q 2.576732528052412 2.109e-08 au
  Orbit Determination Parameters
   # obs. used (total)      275  
   data-arc span      6346 days (17.37 yr)  
   first obs. used      2001-08-23  
   last obs. used      2019-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60343  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 14:59:23  

Additional Information
 Earth MOID = .807387 au 
 Jupiter MOID = 2.45048 au 
 T_jup = 3.647 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456382.5 (2013-Mar-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1719441097885154 4.8421e-08  
q 1.820279905419495 9.902e-08 au
tp 2456688.729834454164
(2014-Jan-31.22983445)
7.7805e-05 TDB
node 189.2163367329646 0.00015769 deg
peri 59.47108677408562 0.00015932 deg
i 1.843396295902993 5.955e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      275  
   data-arc span      6346 days (17.37 yr)  
   first obs. used      2001-08-23  
   last obs. used      2019-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60343  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 14:59:23  

Additional Information
 Jupiter MOID = 2.45048 au 
 T_jup = 3.647 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.344613753949585E-15 -4.75692492059645E-15 1.472394852376116E-12 -3.494061151883253E-14 3.292765816078864E-13 3.214778832670386E-16
q -4.75692492059645E-15 9.804926317351334E-15 -2.70051879493353E-12 6.696491127483792E-14 -5.943815404831089E-13 -7.013426779367402E-16
tp 1.472394852376116E-12 -2.70051879493353E-12 6.053542387047058E-9 -7.472232239044965E-11 1.782388712537699E-9 -2.530733610910755E-12
node -3.494061151883253E-14 6.696491127483792E-14 -7.472232239044965E-11 2.486494393683866E-8 -2.48715598267198E-8 -3.938544939881473E-10
peri 3.292765816078864E-13 -5.943815404831089E-13 1.782388712537699E-9 -2.48715598267198E-8 2.538176340307305E-8 3.928851285979369E-10
i 3.214778832670386E-16 -7.013426779367402E-16 -2.530733610910755E-12 -3.938544939881473E-10 3.928851285979369E-10 3.546149068020688E-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 16.9   n/a MPO459867  

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

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