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91774 (1999 TT203)
Classification: Main-belt Asteroid          SPK-ID: 2091774
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .19683787375137 4.6895e-08  
a 3.025717763579134 2.1429e-08 au
q 2.430141912424467 1.4231e-07 au
i 6.107496704283605 6.7365e-06 deg
node 343.7604418379636 5.161e-05 deg
peri 285.0421664177467 5.4792e-05 deg
M 48.66552751909038 1.6745e-05 deg
tp 2458740.627703760133
(2019-Sep-14.12770376)
8.9524e-05 TDB
period 1922.388010890319
5.26
2.0422e-05
5.591e-08
d
yr
n .1872670855002225 1.9894e-09 deg/d
Q 3.621293614733801 2.5647e-08 au
  Orbit Determination Parameters
   # obs. used (total)      737  
   data-arc span      7610 days (20.84 yr)  
   first obs. used      1999-09-30  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52281  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:19:40  

Additional Information
 Earth MOID = 1.42321 au 
 Jupiter MOID = 1.56442 au 
 T_jup = 3.207 
[ 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 14.9   n/a MPO348077  
diameter diameter 6.509 km 0.974 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.050   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

91774 (1999 TT203)          Discovered 1999-Oct-13 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TT203 = 2002 CH312 = 2003 FA21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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