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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457838.5 (2017-Mar-26.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0632556655497747 6.9144e-08  
q 2.900258016852047 2.3089e-07 au
tp 2457210.433536964471
(2015-Jul-06.93353696)
0.00021453 TDB
node 210.1143483387988 2.2173e-05 deg
peri 134.4982760800629 4.722e-05 deg
i 10.84501805804362 4.4374e-06 deg
  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
 Jupiter MOID = 1.98899 au 
 T_jup = 3.193 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.780875040162534E-15 -1.591036461089638E-14 8.129642563820198E-12 -1.496660254638398E-14 1.655297660527333E-12 -1.309726927331833E-14
q -1.591036461089638E-14 5.330804103162163E-14 -2.772497675940699E-11 5.084127550766785E-14 -5.61513638024005E-12 4.394445715957384E-14
tp 8.129642563820198E-12 -2.772497675940699E-11 4.602266809294346E-8 -4.958364645288786E-11 8.960599919149714E-9 -8.481205432599114E-12
node -1.496660254638398E-14 5.084127550766785E-14 -4.958364645288786E-11 4.91656236581688E-10 -4.922043052986341E-10 -2.877256203737267E-11
peri 1.655297660527333E-12 -5.61513638024005E-12 8.960599919149714E-9 -4.922043052986341E-10 2.229731794116278E-9 2.642693914737608E-11
i -1.309726927331833E-14 4.394445715957384E-14 -8.481205432599114E-12 -2.877256203737267E-11 2.642693914737608E-11 1.969082586902561E-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 15.33   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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