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187816 (1999 TL177)
Classification: Main-belt Asteroid          SPK-ID: 2187816
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06022821646506234 6.8417e-08  
a 3.097727525186758 2.5823e-08 au
q 2.911156921250028 2.2753e-07 au
i 10.82716039437775 4.4332e-06 deg
node 209.9141646764821 2.2227e-05 deg
peri 132.9266972493812 4.9843e-05 deg
M 1.439625301117908 3.9652e-05 deg
tp 2459192.536385679350
(2020-Dec-09.03638568)
0.00021938 TDB
period 1991.421763154562
5.45
2.4901e-05
6.818e-08
d
yr
n .1807753669567881 2.2604e-09 deg/d
Q 3.284298129123488 2.7378e-08 au
  Orbit Determination Parameters
   # obs. used (total)      494  
   data-arc span      7730 days (21.16 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-12-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52856  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:56  

Additional Information
 Earth MOID = 1.91606 au 
 Jupiter MOID = 1.98899 au 
 T_jup = 3.193 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.33   n/a MPCxxxxx  

187816 (1999 TL177)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

Alternate Designations
 1999 TL177 = 2004 RN177 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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