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66971 (1999 XG59)
Classification: Main-belt Asteroid          SPK-ID: 2066971
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1897425295513418 4.586e-08  
a 2.71423880251418 1.4638e-08 au
q 2.199232266318735 1.3075e-07 au
i .9033167791029459 5.0103e-06 deg
node 62.9670072992319 0.00026125 deg
peri 281.1157727591295 0.00026154 deg
M 318.8258372326124 1.3751e-05 deg
tp 2459387.306844879169
(2021-Jun-21.80684488)
6.314e-05 TDB
period 1633.317100736951
4.47
1.3213e-05
3.618e-08
d
yr
n .2204103537748845 1.7831e-09 deg/d
Q 3.229245338709626 1.7416e-08 au
  Orbit Determination Parameters
   # obs. used (total)      861  
   data-arc span      10368 days (28.39 yr)  
   first obs. used      1992-02-28  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53315  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:26:22  

Additional Information
 Earth MOID = 1.19003 au 
 Jupiter MOID = 2.18095 au 
 T_jup = 3.335 
[ 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 15.21   n/a E2021B10  

66971 (1999 XG59)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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