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187811 (1999 TX77)
Classification: Main-belt Asteroid          SPK-ID: 2187811
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2184375069433124 3.9693e-08  
a 3.08874997168207 1.8432e-08 au
q 2.414051128296612 1.2202e-07 au
i 7.488970504057983 4.3602e-06 deg
node 206.160681139608 3.1405e-05 deg
peri 107.5012629622573 3.5661e-05 deg
M 32.28085541814069 1.1892e-05 deg
tp 2459022.706822191558
(2020-Jun-22.20682219)
6.576e-05 TDB
period 1982.771001014745
5.43
1.7748e-05
4.859e-08
d
yr
n .1815640837069731 1.6252e-09 deg/d
Q 3.763448815067528 2.2458e-08 au
  Orbit Determination Parameters
   # obs. used (total)      430  
   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      .51072  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:55  

Additional Information
 Earth MOID = 1.41177 au 
 Jupiter MOID = 1.65118 au 
 T_jup = 3.175 
[ 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 16.09   n/a E2021B55  

187811 (1999 TX77)          Discovered 1999-Oct-10 by Spacewatch at Kitt Peak
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 1999 TX77 = 2004 SF45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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