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71201 (1999 XL239)
Classification: Main-belt Asteroid          SPK-ID: 2071201
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1518134024791885 6.0196e-08  
a 2.682418056197375 1.8522e-08 au
q 2.275191044214441 1.6882e-07 au
i 13.80896685118379 5.6384e-06 deg
node 279.040299055714 2.6194e-05 deg
peri 33.96557372276756 3.2802e-05 deg
M 329.4421102994758 1.7928e-05 deg
tp 2459136.709996186433
(2020-Oct-14.20999619)
7.9864e-05 TDB
period 1604.678827879754
4.39
1.662e-05
4.55e-08
d
yr
n .2243439582708674 2.3236e-09 deg/d
Q 3.089645068180309 2.1334e-08 au
  Orbit Determination Parameters
   # obs. used (total)      606  
   data-arc span      10366 days (28.38 yr)  
   first obs. used      1992-01-30  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55855  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:38:45  

Additional Information
 Earth MOID = 1.27293 au 
 Jupiter MOID = 2.17604 au 
 T_jup = 3.318 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456840.5 (2014-Jul-02.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1501997289419187 6.0184e-08  
q 2.279535281098574 1.6831e-07 au
tp 2457534.585656441529
(2016-May-26.08565644)
8.3101e-05 TDB
node 279.0668780652999 2.6191e-05 deg
peri 34.2155605525878 3.2956e-05 deg
i 13.80770047225375 5.6375e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      606  
   data-arc span      10366 days (28.38 yr)  
   first obs. used      1992-01-30  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55855  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:38:45  

Additional Information
 Jupiter MOID = 2.17604 au 
 T_jup = 3.318 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.622172222170585E-15 -1.009201410450528E-14 1.338214752799207E-12 -1.951615886680489E-14 3.605257495380806E-13 -1.209572750324366E-14
q -1.009201410450528E-14 2.832725142305032E-14 -3.91345937145055E-12 5.143128351855568E-14 -1.069467622871974E-12 3.441669277277173E-14
tp 1.338214752799207E-12 -3.91345937145055E-12 6.905768562743199E-9 -3.020917140643899E-12 1.703095530250973E-9 -1.094263576771002E-11
node -1.951615886680489E-14 5.143128351855568E-14 -3.020917140643899E-12 6.859781203728227E-10 -6.665293025348438E-10 3.012994579936006E-11
peri 3.605257495380806E-13 -1.069467622871974E-12 1.703095530250973E-9 -6.665293025348438E-10 1.086079252273478E-9 -3.196746868614252E-11
i -1.209572750324366E-14 3.441669277277173E-14 -1.094263576771002E-11 3.012994579936006E-11 -3.196746868614252E-11 3.178111294853799E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8   n/a MPO337799  

71201 (1999 XL239)          Discovered 1999-Dec-07 by CSS at Catalina
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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