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118325 (1998 XP71)
Classification: Main-belt Asteroid          SPK-ID: 2118325
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2150436489729949 4.0204e-08  
a 2.276111290785524 8.3146e-09 au
q 1.786648013346371 9.1748e-08 au
i 8.696344078546691 5.2891e-06 deg
node 312.1691204650771 2.9236e-05 deg
peri 104.5223215590532 3.2913e-05 deg
M 162.3935975085096 1.458e-05 deg
tp 2458634.710258784678
(2019-May-31.21025878)
4.9389e-05 TDB
period 1254.26316038625
3.43
6.8727e-06
1.882e-08
d
yr
n .2870211063913716 1.5727e-09 deg/d
Q 2.765574568224677 1.0103e-08 au
  Orbit Determination Parameters
   # obs. used (total)      642  
   data-arc span      7859 days (21.52 yr)  
   first obs. used      1998-11-16  
   last obs. used      2020-05-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54184  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:56:44  

Additional Information
 Earth MOID = .821639 au 
 Jupiter MOID = 2.62696 au 
 T_jup = 3.563 
[ show covariance matrix ]

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 16.11   n/a E2021B55  

118325 (1998 XP71)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1998 XP71 = 2001 QP209 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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