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91780 (1999 TH211)
Classification: Main-belt Asteroid          SPK-ID: 2091780
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08323536670607233 4.2179e-08  
a 2.987771225569244 2.3746e-08 au
q 2.739082991975136 1.2646e-07 au
i 5.155973485470156 5.4766e-06 deg
node 147.3398180621719 5.2337e-05 deg
peri 239.3910126313567 6.1785e-05 deg
M 331.4341197621657 3.2578e-05 deg
tp 2459150.180266504157
(2020-Oct-27.68026650)
0.00017073 TDB
period 1886.337669025454
5.16
2.2488e-05
6.157e-08
d
yr
n .1908460006452546 2.2752e-09 deg/d
Q 3.236459459163351 2.5723e-08 au
  Orbit Determination Parameters
   # obs. used (total)      720  
   data-arc span      9310 days (25.49 yr)  
   first obs. used      1995-02-01  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54377  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:19:40  

Additional Information
 Earth MOID = 1.74736 au 
 Jupiter MOID = 2.17308 au 
 T_jup = 3.246 
[ 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 14.8   n/a MPO302520  

91780 (1999 TH211)          Discovered 1999-Oct-15 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TH211 = 2000 YO83 = 2002 EK35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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