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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1515608513431012 6.491e-08  
a 2.680610314749906 2.0218e-08 au
q 2.274334733327312 1.7832e-07 au
i 13.80936420437379 5.7627e-06 deg
node 279.0413711270527 3.1881e-05 deg
peri 34.20783516050869 3.8047e-05 deg
M 239.3970587250027 2.0945e-05 deg
tp 2459137.537178188851
(2020-Oct-15.03717819)
9.4228e-05 TDB
period 1603.056957849395
4.39
1.8136e-05
4.965e-08
d
yr
n .2245709350733011 2.5407e-09 deg/d
Q 3.0868858961725 2.3282e-08 au
  Orbit Determination Parameters
   # obs. used (total)      552  
   data-arc span      9930 days (27.19 yr)  
   first obs. used      1992-01-30  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57685  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:15:58  

Additional Information
 Earth MOID = 1.27149 au 
 Jupiter MOID = 2.17774 au 
 T_jup = 3.319 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456573.5 (2013-Oct-08.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1488998181934011 6.4585e-08  
q 2.285414901034259 1.7719e-07 au
tp 2455927.646427669182
(2012-Jan-01.14642767)
9.7112e-05 TDB
node 279.0772796890781 3.1832e-05 deg
peri 34.04595634660924 3.8318e-05 deg
i 13.81125067944843 5.7596e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      552  
   data-arc span      9930 days (27.19 yr)  
   first obs. used      1992-01-30  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57685  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:15:58  

Additional Information
 Jupiter MOID = 2.17774 au 
 T_jup = 3.319 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.171159549240626E-15 -1.139069965934776E-14 2.617753533801624E-12 -5.969245992456769E-15 5.294447134126066E-13 -1.240828746610101E-14
q -1.139069965934776E-14 3.139683279648802E-14 -7.366100335394501E-12 1.55183643230469E-14 -1.473031682023093E-12 3.469512454284966E-14
tp 2.617753533801624E-12 -7.366100335394501E-12 9.43083678148778E-9 -1.691814532284433E-11 2.148401358507576E-9 -1.616038838212331E-11
node -5.969245992456769E-15 1.55183643230469E-14 -1.691814532284433E-11 1.013261811259314E-9 -9.880858818251762E-10 5.098543806195373E-11
peri 5.294447134126066E-13 -1.473031682023093E-12 2.148401358507576E-9 -9.880858818251762E-10 1.468255321345285E-9 -5.294292151769684E-11
i -1.240828746610101E-14 3.469512454284966E-14 -1.616038838212331E-11 5.098543806195373E-11 -5.294292151769684E-11 3.317292509084511E-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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