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216955 (1999 XB46)
Classification: Main-belt Asteroid          SPK-ID: 2216955
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2383570310268682 3.4538e-08  
a 2.287877437099935 8.1383e-09 au
q 1.742545763839434 7.996e-08 au
i 5.5639852798774 5.0913e-06 deg
node 258.4684811453947 4.8391e-05 deg
peri 120.5318952645092 5.0171e-05 deg
M 56.66782684584603 1.3065e-05 deg
tp 2459001.532740893428
(2020-Jun-01.03274089)
4.5417e-05 TDB
period 1264.001414298398
3.46
6.7444e-06
1.847e-08
d
yr
n .284809807906602 1.5197e-09 deg/d
Q 2.833209110360436 1.0078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      453  
   data-arc span      7747 days (21.21 yr)  
   first obs. used      1999-11-03  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51773  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:57  

Additional Information
 Earth MOID = .751929 au 
 Jupiter MOID = 2.65813 au 
 T_jup = 3.556 
[ 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 16.71   n/a MPCxxxxx  

216955 (1999 XB46)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20090806/Numbers.arcLast Updated: 2009-08-09

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