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JPL Small-Body Database Browser
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173952 (2001 XJ7)
Classification: Main-belt Asteroid          SPK-ID: 2173952
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08155409181562029 4.6143e-08  
a 3.111595679940183 2.9554e-08 au
q 2.857832320165254 1.4497e-07 au
i 9.340427900841025 5.3356e-06 deg
node 250.133016786223 3.4537e-05 deg
peri 186.6841772582388 5.0068e-05 deg
M 134.2987666992404 3.6119e-05 deg
tp 2458252.601451547016
(2018-May-14.10145155)
0.0001988 TDB
period 2004.80975410623
5.49
2.8563e-05
7.82e-08
d
yr
n .1795681606509804 2.5583e-09 deg/d
Q 3.365359039715112 3.1964e-08 au
  Orbit Determination Parameters
   # obs. used (total)      417  
   data-arc span      6656 days (18.22 yr)  
   first obs. used      2001-11-09  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5398  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 17:13:37  

Additional Information
 Earth MOID = 1.87322 au 
 Jupiter MOID = 1.89566 au 
 T_jup = 3.193 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457074.5 (2015-Feb-21.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08269148850483407 4.6142e-08  
q 2.854320154142635 1.4509e-07 au
tp 2456250.600676383160
(2012-Nov-19.10067638)
0.00019256 TDB
node 250.1573743009163 3.453e-05 deg
peri 187.3851747610901 4.969e-05 deg
i 9.34167620699604 5.3364e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      417  
   data-arc span      6656 days (18.22 yr)  
   first obs. used      2001-11-09  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5398  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 17:13:37  

Additional Information
 Jupiter MOID = 1.89566 au 
 T_jup = 3.193 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.129076895389087E-15 -6.576913076412736E-15 -3.753096002737153E-13 -3.962204779601536E-15 -5.568598315703345E-14 -8.483030360388371E-16
q -6.576913076412736E-15 2.10515396547425E-14 1.405375967609445E-12 8.804369664811195E-15 2.787978315891558E-13 3.255606504003072E-15
tp -3.753096002737153E-13 1.405375967609445E-12 3.707786553699435E-8 1.833484100604604E-11 6.910756907865259E-9 -4.864375762511838E-13
node -3.962204779601536E-15 8.804369664811195E-15 1.833484100604604E-11 1.1923493892401E-9 -1.173182271509667E-9 -5.942536157851076E-12
peri -5.568598315703345E-14 2.787978315891558E-13 6.910756907865259E-9 -1.173182271509667E-9 2.469121094613987E-9 5.812082404203651E-12
i -8.483030360388371E-16 3.255606504003072E-15 -4.864375762511838E-13 -5.942536157851076E-12 5.812082404203651E-12 2.847757478945896E-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 15.1   n/a MPO433119  

173952 (2001 XJ7)          Discovered 2001-Dec-07 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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