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JPL Small-Body Database Browser
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173855 (2001 TO169)
Classification: Main-belt Asteroid          SPK-ID: 2173855
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1076627737227289 5.2023e-08  
a 3.022718814355791 3.3626e-08 au
q 2.697284522618368 1.5797e-07 au
i 8.931531697993936 6.2705e-06 deg
node 273.4678322143881 4.4201e-05 deg
peri 128.8533235406605 5.5934e-05 deg
M 117.3907626822697 3.5718e-05 deg
tp 2457974.568981138080
(2017-Aug-09.06898114)
0.00018689 TDB
period 1919.530648251978
5.26
3.2031e-05
8.77e-08
d
yr
n .1875458463389654 3.1295e-09 deg/d
Q 3.348153106093214 3.7247e-08 au
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      6874 days (18.82 yr)  
   first obs. used      2000-07-05  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60057  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:09:45  

Additional Information
 Earth MOID = 1.71718 au 
 Jupiter MOID = 2.02869 au 
 T_jup = 3.219 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457139.5 (2015-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1080939690246392 5.1941e-08  
q 2.696143024974122 1.5766e-07 au
tp 2457976.811151643215
(2017-Aug-11.31115164)
0.00018636 TDB
node 273.4832310442932 4.4197e-05 deg
peri 129.4088643921812 5.5872e-05 deg
i 8.931871549705544 6.2707e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      6874 days (18.82 yr)  
   first obs. used      2000-07-05  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60057  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:09:45  

Additional Information
 Jupiter MOID = 2.02869 au 
 T_jup = 3.219 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.697894909683082E-15 -8.041419665326442E-15 -1.405341342491202E-12 6.731467514383758E-15 -2.563889589127271E-13 -8.68602238762425E-16
q -8.041419665326442E-15 2.485794198244853E-14 5.990386200842355E-12 -2.143429812000571E-14 1.021772972061271E-12 3.566095529829052E-15
tp -1.405341342491202E-12 5.990386200842355E-12 3.473140426512258E-8 -1.153439195323702E-11 6.42271000367772E-9 5.852810004355266E-12
node 6.731467514383758E-15 -2.143429812000571E-14 -1.153439195323702E-11 1.953415514673746E-9 -1.931414658756105E-9 6.612158662890056E-11
peri -2.563889589127271E-13 1.021772972061271E-12 6.42271000367772E-9 -1.931414658756105E-9 3.121653651936727E-9 -6.435684849450894E-11
i -8.68602238762425E-16 3.566095529829052E-15 5.852810004355266E-12 6.612158662890056E-11 -6.435684849450894E-11 3.932180034367784E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO433117  

173855 (2001 TO169)          Discovered 2001-Oct-15 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

Alternate Designations
 2001 TO169 = 2000 NK8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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