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JPL Small-Body Database Browser
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20655 (1999 TT248)
Classification: Main-belt Asteroid          SPK-ID: 2020655
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1169060499882236 4.1052e-08  
a 3.132716457131884 2.0873e-08 au
q 2.766482950395493 1.318e-07 au
i 10.06344578179104 5.1029e-06 deg
node 189.1992473714039 2.1545e-05 deg
peri 146.2940586217666 2.8648e-05 deg
M 251.1135648445648 1.8997e-05 deg
tp 2459213.063814628903
(2020-Dec-29.56381463)
0.00010877 TDB
period 2025.256616690672
5.54
2.0241e-05
5.542e-08
d
yr
n .1777552518693905 1.7765e-09 deg/d
Q 3.498949963868276 2.3313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1319  
   data-arc span      8060 days (22.07 yr)  
   first obs. used      1997-04-16  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52176  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:54:20  

Additional Information
 Earth MOID = 1.76356 au 
 Jupiter MOID = 1.96824 au 
 T_jup = 3.178 
[ 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 13.5   n/a MPO474037  

20655 (1999 TT248)          Discovered 1999-Oct-08 by CSS at Catalina
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TT248 = 1998 QM64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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