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181917 (1999 TP71)
Classification: Main-belt Asteroid          SPK-ID: 2181917
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1292729928219762 5.6952e-08  
a 3.172496547415451 3.3815e-08 au
q 2.762378424013669 1.8289e-07 au
i .9102057921915555 7.3288e-06 deg
node 25.69401682667128 0.00036487 deg
peri 225.3571446026143 0.00036642 deg
M 35.83165629445655 2.8459e-05 deg
tp 2458995.069677990984
(2020-May-25.56967799)
0.00016387 TDB
period 2063.954714108128
5.65
3.2999e-05
9.035e-08
d
yr
n .174422431625668 2.7887e-09 deg/d
Q 3.582614670817233 3.8186e-08 au
  Orbit Determination Parameters
   # obs. used (total)      221  
   data-arc span      7617 days (20.85 yr)  
   first obs. used      1999-10-09  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61009  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:35  

Additional Information
 Earth MOID = 1.74667 au 
 Jupiter MOID = 1.4546 au 
 T_jup = 3.189 
[ 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 16.13   n/a E2021B55  

181917 (1999 TP71)          Discovered 1999-Oct-09 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 1999 TP71 = 2004 RU119 = 2005 UL172 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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