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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1413188588968092 6.4345e-08  
a 2.608662076250419 2.1162e-08 au
q 2.240008928387329 1.7815e-07 au
i 10.73488645961615 6.072e-06 deg
node 19.71634214357772 2.302e-05 deg
peri 335.7565906030114 2.8502e-05 deg
M 36.64752458938886 1.6197e-05 deg
tp 2458843.836686455124
(2019-Dec-26.33668646)
6.8555e-05 TDB
period 1538.95231691816
4.21
1.8726e-05
5.127e-08
d
yr
n .2339253764021231 2.8464e-09 deg/d
Q 2.977315224113509 2.4152e-08 au
  Orbit Determination Parameters
   # obs. used (total)      538  
   data-arc span      16835 days (46.09 yr)  
   first obs. used      1973-09-29  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5445  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 14:33:03  

Additional Information
 Earth MOID = 1.24115 au 
 Jupiter MOID = 2.48229 au 
 T_jup = 3.372 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457186.5 (2015-Jun-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .143480712939942 6.4559e-08  
q 2.234200378514916 1.7916e-07 au
tp 2457304.027833860989
(2015-Oct-08.52783386)
6.2756e-05 TDB
node 19.7760700331623 2.2977e-05 deg
peri 335.5703124639878 2.826e-05 deg
i 10.74898192657431 6.0789e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      538  
   data-arc span      16835 days (46.09 yr)  
   first obs. used      1973-09-29  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5445  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 14:33:03  

Additional Information
 Jupiter MOID = 2.48229 au 
 T_jup = 3.372 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.167804390961322E-15 -1.152332687752325E-14 -2.406320821049065E-14 4.569583078468334E-15 2.430229789392898E-14 -1.028546607524796E-14
q -1.152332687752325E-14 3.209812568743485E-14 1.475729871605665E-13 -1.394875302112854E-14 -5.542736708771335E-14 2.886923783704525E-14
tp -2.406320821049065E-14 1.475729871605665E-13 3.938323680313843E-9 -2.384879652014958E-12 1.045480466860736E-9 4.047592249272973E-13
node 4.569583078468334E-15 -1.394875302112854E-14 -2.384879652014958E-12 5.279374353672318E-10 -5.186210505445088E-10 -3.616737793719814E-11
peri 2.430229789392898E-14 -5.542736708771335E-14 1.045480466860736E-9 -5.186210505445088E-10 7.986258031153863E-10 3.564698856247697E-11
i -1.028546607524796E-14 2.886923783704525E-14 4.047592249272973E-13 -3.616737793719814E-11 3.564698856247697E-11 3.695329748953669E-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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2007-Oct-31 18:47 < 00:01 Amphi 0.0428079901469406 0.0428067906049878 0.0428091896910501 3.33004288453913 3.3300428442119 2454405.282338738 0.94905771362136 73.8155500340695 55.9953585682933 -64.1993048937791 109589.09559677 T 15 CATAB v2.0f-lin.ifort 2019-Dec-04 14:33:16 2019-Dec-04 14:33

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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