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173112 (4327 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2173112
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 .1413189002698259 5.3321e-08  
a 2.60866207260891 1.813e-08 au
q 2.240008817332214 1.4512e-07 au
i 10.73489011106061 5.5925e-06 deg
node 19.71632521797578 2.2485e-05 deg
peri 335.7566302328385 2.7965e-05 deg
M 36.64751055180113 1.6146e-05 deg
tp 2458843.836746791989
(2019-Dec-26.33674679)
6.8407e-05 TDB
period 1538.952313695755
4.21
1.6044e-05
4.393e-08
d
yr
n .2339253768919383 2.4387e-09 deg/d
Q 2.977315327885606 2.0693e-08 au
  Orbit Determination Parameters
   # obs. used (total)      578  
   data-arc span      17214 days (47.13 yr)  
   first obs. used      1973-09-29  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52042  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:25:51  

Additional Information
 Earth MOID = 1.24115 au 
 Jupiter MOID = 2.48229 au 
 T_jup = 3.372 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457333.5 (2015-Nov-07.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1434522943043277 5.3503e-08  
q 2.234220429624797 1.4595e-07 au
tp 2457303.981380329627
(2015-Oct-08.48138033)
6.253e-05 TDB
node 19.77473196261407 2.2441e-05 deg
peri 335.5569526962663 2.772e-05 deg
i 10.74932935380809 5.5989e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      578  
   data-arc span      17214 days (47.13 yr)  
   first obs. used      1973-09-29  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52042  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:25:51  

Additional Information
 Jupiter MOID = 2.48229 au 
 T_jup = 3.372 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.862521621407813E-15 -7.769343853640444E-15 -2.167137885566249E-13 -1.205466461374131E-15 -6.110078833423237E-14 -5.498924466900228E-15
q -7.769343853640444E-15 2.13019261203751E-14 7.021847518562551E-13 2.466664056056739E-15 1.90441500726692E-13 1.519611084880305E-14
tp -2.167137885566249E-13 7.021847518562551E-13 3.910018671020805E-9 -1.262041202409043E-12 1.030946610601662E-9 1.368871380727205E-13
node -1.205466461374131E-15 2.466664056056739E-15 -1.262041202409043E-12 5.036136387725576E-10 -4.94520768413659E-10 -2.452957165478101E-11
peri -6.110078833423237E-14 1.90441500726692E-13 1.030946610601662E-9 -4.94520768413659E-10 7.683943158774006E-10 2.424983672181014E-11
i -5.498924466900228E-15 1.519611084880305E-14 1.368871380727205E-13 -2.452957165478101E-11 2.424983672181014E-11 3.134816259739719E-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 15.5   n/a MPO433111  

173112 (4327 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 4327 T-2 = 2005 ER182 = 2007 TM160 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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