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190284 (1991 TN16)
Classification: Main-belt Asteroid          SPK-ID: 2190284
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 .166418396232363 6.2599e-08  
a 2.288209453492998 1.5509e-08 au
q 1.907409305998961 1.3807e-07 au
i 3.300491235193078 7.4472e-06 deg
node 146.1438164601516 8.5439e-05 deg
peri 242.8757503305496 8.8687e-05 deg
M 159.1165760573321 2.0069e-05 deg
tp 2458641.701779741125
(2019-Jun-07.20177974)
7.0473e-05 TDB
period 1264.276571792944
3.46
1.2854e-05
3.519e-08
d
yr
n .2847478218230866 2.895e-09 deg/d
Q 2.669009600987034 1.809e-08 au
  Orbit Determination Parameters
   # obs. used (total)      241  
   data-arc span      10346 days (28.33 yr)  
   first obs. used      1991-10-06  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57502  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 21:16:57  

Additional Information
 Earth MOID = .913687 au 
 Jupiter MOID = 2.7744 au 
 T_jup = 3.580 
[ 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 17.54   n/a E2021B55  

190284 (1991 TN16)          Discovered 1991-Oct-06 by Lowe, A. at Palomar
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

[ show close-approach data ]
Alternate Designations
 1991 TN16 = 2005 XF26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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