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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1575974208292807 3.7359e-08  
a 3.157899068927533 2.4939e-08 au
q 2.660222320425367 1.2131e-07 au
i 9.477580739057514 6.5287e-06 deg
node 187.8112967002473 2.4856e-05 deg
peri 104.9551252994433 3.5634e-05 deg
M 220.1483264468216 2.9278e-05 deg
tp 2459996.771114740544
(2023-Feb-21.27111474)
0.0001712 TDB
period 2049.725927645727
5.61
2.4281e-05
6.648e-08
d
yr
n .1756332371779522 2.0805e-09 deg/d
Q 3.6555758174297 2.8869e-08 au
  Orbit Determination Parameters
   # obs. used (total)      631  
   data-arc span      17320 days (47.42 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60423  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:55:22  

Additional Information
 Earth MOID = 1.6629 au 
 Jupiter MOID = 1.67017 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 14.81   n/a E2021B55  

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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