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117985 (3167 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2117985
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1621438887752306 5.2364e-08  
a 2.252514180723393 1.038e-08 au
q 1.887282771939549 1.1885e-07 au
i 1.947972499269178 5.7247e-06 deg
node 217.2647256672044 0.00014193 deg
peri 3.530067531949168 0.00014282 deg
M 171.0739660907541 1.6326e-05 deg
tp 2458413.712098762033
(2018-Oct-22.21209876)
5.4534e-05 TDB
period 1234.808833119612
3.38
8.5357e-06
2.337e-08
d
yr
n .2915431039560177 2.0153e-09 deg/d
Q 2.617745589507237 1.2064e-08 au
  Orbit Determination Parameters
   # obs. used (total)      302  
   data-arc span      17697 days (48.45 yr)  
   first obs. used      1971-03-25  
   last obs. used      2019-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63346  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:17:09  

Additional Information
 Earth MOID = .879096 au 
 Jupiter MOID = 2.35684 au 
 T_jup = 3.608 
[ 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 17.4   n/a MPO432683  

117985 (3167 T-1)          Discovered 1971-Mar-26 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 3167 T-1 = 2002 PR20 = 2003 XC32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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