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118254 (1998 CU)
Classification: Main-belt Asteroid          SPK-ID: 2118254
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995440432836703 5.3828e-08  
a 2.672418409141483 1.3325e-08 au
q 2.139153234435678 1.4372e-07 au
i 12.41511339438142 5.1105e-06 deg
node 301.3592317520067 1.7248e-05 deg
peri 218.8318477496235 1.922e-05 deg
M 13.12621608921933 7.6712e-06 deg
tp 2458942.317529530491
(2020-Apr-02.81752953)
3.4068e-05 TDB
period 1595.714197195509
4.37
1.1934e-05
3.267e-08
d
yr
n .2256043097396171 1.6873e-09 deg/d
Q 3.205683583847289 1.5984e-08 au
  Orbit Determination Parameters
   # obs. used (total)      696  
   data-arc span      8153 days (22.32 yr)  
   first obs. used      1997-12-31  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48823  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:18:43  

Additional Information
 Earth MOID = 1.16399 au 
 Jupiter MOID = 1.88394 au 
 T_jup = 3.319 
[ 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 15.5   n/a MPO417616  

118254 (1998 CU)          Discovered 1998-Feb-04 by Tichy, M., Moravec, Z. at Klet
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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