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JPL Small-Body Database Browser
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52173 (2178 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2052173
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04062206652314449 4.1885e-08  
a 2.843891104006204 1.8818e-08 au
q 2.728366370394685 1.2403e-07 au
i 1.161781555175934 5.2256e-06 deg
node 226.4113640715678 0.00026103 deg
peri 35.93854857671919 0.00027082 deg
M 8.116209491661913 7.2429e-05 deg
tp 2458961.007137016568
(2020-Apr-21.50713702)
0.00035243 TDB
period 1751.73283644807
4.80
1.7386e-05
4.76e-08
d
yr
n .2055107905209792 2.0397e-09 deg/d
Q 2.959415837617723 1.9582e-08 au
  Orbit Determination Parameters
   # obs. used (total)      823  
   data-arc span      16639 days (45.56 yr)  
   first obs. used      1973-09-20  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56021  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:04:52  

Additional Information
 Earth MOID = 1.71283 au 
 Jupiter MOID = 2.0538 au 
 T_jup = 3.307 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455916.5 (2011-Dec-21.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03805761734706681 4.221e-08  
q 2.733729058594992 1.2412e-07 au
tp 2455431.907595794462
(2010-Aug-23.40759579)
0.00037452 TDB
node 226.5282502578729 0.00026077 deg
peri 30.21807294457824 0.00027179 deg
i 1.160551953520198 5.2411e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      823  
   data-arc span      16639 days (45.56 yr)  
   first obs. used      1973-09-20  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56021  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:04:52  

Additional Information
 Jupiter MOID = 2.0538 au 
 T_jup = 3.307 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.781645762677889E-15 -5.183148939900992E-15 -1.657230698535499E-12 5.681839835699588E-15 -3.310395604825184E-13 -7.425897549424052E-17
q -5.183148939900992E-15 1.540555768318737E-14 4.475494553015332E-12 -1.107656617299713E-14 9.045024651541389E-13 1.980495339470188E-16
tp -1.657230698535499E-12 4.475494553015332E-12 1.402645476014671E-7 4.034488936739159E-11 2.871964741944106E-8 1.197606114359195E-12
node 5.681839835699588E-15 -1.107656617299713E-14 4.034488936739159E-11 6.800004869540825E-8 -6.797813824727316E-8 -3.100556048641925E-10
peri -3.310395604825184E-13 9.045024651541389E-13 2.871964741944106E-8 -6.797813824727316E-8 7.3867864092499E-8 3.102336407585647E-10
i -7.425897549424052E-17 1.980495339470188E-16 1.197606114359195E-12 -3.100556048641925E-10 3.102336407585647E-10 2.746939863320531E-11

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 14.9   n/a MPO468399  

52173 (2178 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2178 T-2 = 2000 EY46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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