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118057 (4163 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2118057
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1232554420865838 3.974e-08  
a 3.082473233984134 2.51e-08 au
q 2.702541632809357 1.2372e-07 au
i 11.41050235145067 4.6531e-06 deg
node 166.2910008872379 2.2836e-05 deg
peri 165.7655134121548 3.0869e-05 deg
M 277.7667489481699 2.3004e-05 deg
tp 2459652.035975245194
(2022-Mar-13.53597525)
0.00012957 TDB
period 1976.730203525773
5.41
2.4145e-05
6.611e-08
d
yr
n .1821189352790229 2.2245e-09 deg/d
Q 3.462404835158909 2.8194e-08 au
  Orbit Determination Parameters
   # obs. used (total)      523  
   data-arc span      17098 days (46.81 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-07-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57855  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:55:30  

Additional Information
 Earth MOID = 1.69235 au 
 Jupiter MOID = 1.95037 au 
 T_jup = 3.185 
[ 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 15.14   n/a E2021B55  
diameter diameter 4.090 km 1.334 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.116   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118057 (4163 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
 4163 T-2 = 2000 QQ9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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