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216570 (2002 CW54)
Classification: Main-belt Asteroid          SPK-ID: 2216570
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1407308466585976 2.9876e-08  
a 2.160466088338559 9.4354e-09 au
q 1.856421866549485 6.447e-08 au
i 2.343490452461007 3.8469e-06 deg
node 263.2470181685592 0.00012987 deg
peri 146.0675726216032 0.00013188 deg
M 63.1501648416171 2.4547e-05 deg
tp 2458997.034118004038
(2020-May-27.53411800)
7.8537e-05 TDB
period 1159.89748723941
3.18
7.5984e-06
2.08e-08
d
yr
n .3103722561351612 2.0332e-09 deg/d
Q 2.464510310127633 1.0763e-08 au
  Orbit Determination Parameters
   # obs. used (total)      522  
   data-arc span      7557 days (20.69 yr)  
   first obs. used      2000-07-06  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52475  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:55:22  

Additional Information
 Earth MOID = .8664 au 
 Jupiter MOID = 2.87532 au 
 T_jup = 3.683 
[ 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 16.95   n/a MPCxxxxx  
rotation period rot_per 8.397 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

216570 (2002 CW54)          Discovered 2002-Feb-07 by LINEAR at Socorro
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

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