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70952 (1999 XE)
Classification: Main-belt Asteroid          SPK-ID: 2070952
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1948302017958082 4.1065e-08  
a 2.612947399645935 1.2914e-08 au
q 2.103866330491085 1.1321e-07 au
i 1.816568996809621 4.595e-06 deg
node 192.4353054693938 0.00013874 deg
peri 117.3117362581433 0.00013936 deg
M 36.45817952310757 1.3465e-05 deg
tp 2458844.261915435876
(2019-Dec-26.76191544)
5.7274e-05 TDB
period 1542.745994967622
4.22
1.1437e-05
3.131e-08
d
yr
n .2333501439474198 1.7299e-09 deg/d
Q 3.122028468800785 1.543e-08 au
  Orbit Determination Parameters
   # obs. used (total)      620  
   data-arc span      8546 days (23.40 yr)  
   first obs. used      1997-03-05  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56789  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 06:30:36  

Additional Information
 Earth MOID = 1.09014 au 
 Jupiter MOID = 2.15022 au 
 T_jup = 3.381 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456915.5 (2014-Sep-15.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1948693546557581 4.0933e-08  
q 2.10367090819669 1.1282e-07 au
tp 2457303.128084026553
(2015-Oct-07.62808403)
5.4569e-05 TDB
node 192.4727992384542 0.00013869 deg
peri 117.7424279752408 0.00013932 deg
i 1.816656149103038 4.5971e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      620  
   data-arc span      8546 days (23.40 yr)  
   first obs. used      1997-03-05  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56789  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 06:30:36  

Additional Information
 Jupiter MOID = 2.15022 au 
 T_jup = 3.381 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.675474523838499E-15 -4.603963957476752E-15 -4.258928057408975E-13 5.393416850378392E-15 -4.722625404010357E-14 -8.536849013822007E-16
q -4.603963957476752E-15 1.272787982854763E-14 1.200476413933662E-12 -1.441007107423024E-14 1.320397024535792E-13 2.588486601441565E-15
tp -4.258928057408975E-13 1.200476413933662E-12 2.97779942960861E-9 -2.852280723277127E-11 7.386228833436305E-10 9.58140937706522E-13
node 5.393416850378392E-15 -1.441007107423024E-14 -2.852280723277127E-11 1.923588958215507E-8 -1.923220485666081E-8 1.662749473697988E-10
peri -4.722625404010357E-14 1.320397024535792E-13 7.386228833436305E-10 -1.923220485666081E-8 1.941017426413281E-8 -1.659782719538449E-10
i -8.536849013822007E-16 2.588486601441565E-15 9.58140937706522E-13 1.662749473697988E-10 -1.659782719538449E-10 2.113306278216609E-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 15.7   n/a MPO474589  

70952 (1999 XE)          Discovered 1999-Dec-02 by Spacewatch at Kitt Peak
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XE = 2002 JT31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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