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187740 (1224 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2187740
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1972178283084998 3.5389e-08  
a 2.350671977248573 1.1231e-08 au
q 1.887077554829962 8.0881e-08 au
i 6.077978454316727 5.0956e-06 deg
node 3.628856847810182 3.1133e-05 deg
peri 304.1553200407008 3.3344e-05 deg
M 75.07547938152526 1.2292e-05 deg
tp 2458925.974883081638
(2020-Mar-17.47488308)
4.4596e-05 TDB
period 1316.395751379385
3.60
9.4344e-06
2.583e-08
d
yr
n .273473991102428 1.96e-09 deg/d
Q 2.814266399667184 1.3446e-08 au
  Orbit Determination Parameters
   # obs. used (total)      492  
   data-arc span      17276 days (47.30 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45073  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:39  

Additional Information
 Earth MOID = .87882 au 
 Jupiter MOID = 2.46978 au 
 T_jup = 3.524 
[ 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 16.83   n/a E2021B55  

187740 (1224 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 1224 T-2 = 2002 TQ263 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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