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181690 (3174 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2181690
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2793529506160434 4.3771e-08  
a 2.567775106718156 1.6809e-08 au
q 1.850459554138013 1.1715e-07 au
i 5.916513746935692 5.4646e-06 deg
node 32.92603273807228 6.1113e-05 deg
peri 12.11214454477426 6.4585e-05 deg
M 142.6010858848942 2.4241e-05 deg
tp 2458605.174843058236
(2019-May-01.67484306)
9.5947e-05 TDB
period 1502.913215345563
4.11
1.4757e-05
4.04e-08
d
yr
n .2395347890511599 2.352e-09 deg/d
Q 3.285090659298298 2.1505e-08 au
  Orbit Determination Parameters
   # obs. used (total)      362  
   data-arc span      16988 days (46.51 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57558  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:38  

Additional Information
 Earth MOID = .859193 au 
 Jupiter MOID = 2.13499 au 
 T_jup = 3.368 
[ 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 16.78   n/a E2021B55  

181690 (3174 T-2)          Discovered 1973-Sep-30 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 3174 T-2 = 2002 TR64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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