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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 ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1071627725748142 5.0756e-08  
a 3.024139943752103 3.1045e-08 au
q 2.700064722725385 1.5335e-07 au
i 8.930145638612059 5.617e-06 deg
node 273.4716104346399 3.6628e-05 deg
peri 128.514651970844 4.6006e-05 deg
M 230.2935147853879 3.0665e-05 deg
tp 2459892.586605145354
(2022-Nov-09.08660515)
0.00016935 TDB
period 1920.884506584866
5.26
2.9579e-05
8.098e-08
d
yr
n .1874136621779738 2.8859e-09 deg/d
Q 3.34821516477882 3.4372e-08 au
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      7293 days (19.97 yr)  
   first obs. used      2000-07-05  
   last obs. used      2020-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57007  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:16:47  

Additional Information
 Earth MOID = 1.71959 au 
 Jupiter MOID = 2.03011 au 
 T_jup = 3.218 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457482.5 (2016-Apr-04.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1078886657163187 5.0686e-08  
q 2.697557689709087 1.5295e-07 au
tp 2457976.428712667636
(2017-Aug-10.92871267)
0.00015404 TDB
node 273.4833694667835 3.6631e-05 deg
peri 129.2819508024969 4.5911e-05 deg
i 8.930344994796213 5.6172e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      7293 days (19.97 yr)  
   first obs. used      2000-07-05  
   last obs. used      2020-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57007  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:16:47  

Additional Information
 Jupiter MOID = 2.03011 au 
 T_jup = 3.218 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.569119413626853E-15 -7.622921135104654E-15 -2.541135886506365E-13 1.029513694170277E-14 -4.656239929963512E-14 -3.061792425131984E-18
q -7.622921135104654E-15 2.339306369708998E-14 2.487421857205184E-12 -3.076858701145481E-14 4.12327510235222E-13 8.273318701319895E-16
tp -2.541135886506365E-13 2.487421857205184E-12 2.372903580117244E-8 -9.498724660632022E-12 4.301185474336139E-9 4.146500951680882E-12
node 1.029513694170277E-14 -3.076858701145481E-14 -9.498724660632022E-12 1.341837853587275E-9 -1.327113048036217E-9 -5.185998955000059E-13
peri -4.656239929963512E-14 4.12327510235222E-13 4.301185474336139E-9 -1.327113048036217E-9 2.107786718514474E-9 1.181495499214972E-12
i -3.061792425131984E-18 8.273318701319895E-16 4.146500951680882E-12 -5.185998955000059E-13 1.181495499214972E-12 3.155305483015024E-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 15.52   n/a E2021B55  

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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