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118027 (2161 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2118027
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 .1575896379627771 3.7704e-08  
a 3.158077509953121 2.6453e-08 au
q 2.66039721850122 1.2162e-07 au
i 9.476573819442519 7.3329e-06 deg
node 187.8218479099449 2.6513e-05 deg
peri 104.8870216767966 3.8029e-05 deg
M 185.100118319002 2.985e-05 deg
tp 2459996.408912827973
(2023-Feb-20.90891283)
0.00017455 TDB
period 2049.899663580061
5.61
2.5756e-05
7.052e-08
d
yr
n .175618351666674 2.2065e-09 deg/d
Q 3.655757801405021 3.0622e-08 au
  Orbit Determination Parameters
   # obs. used (total)      580  
   data-arc span      16936 days (46.37 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61764  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:53:02  

Additional Information
 Earth MOID = 1.66498 au 
 Jupiter MOID = 1.67046 au 
 T_jup = 3.165 
[ 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 14.8   n/a MPO453651  

118027 (2161 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2161 T-2 = 1996 XB23 = 2001 SZ36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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