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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1965170679866138 3.6591e-08  
a 3.025037236153449 1.9884e-08 au
q 2.430565787954244 1.0618e-07 au
i 6.107925038621972 6.5941e-06 deg
node 343.7603177851878 4.076e-05 deg
peri 284.9894771195602 4.4539e-05 deg
M 122.9291346323457 1.6665e-05 deg
tp 2458740.283965871285
(2019-Sep-13.78396587)
8.9128e-05 TDB
period 1921.739488306601
5.26
1.8948e-05
5.188e-08
d
yr
n .1873302818568946 1.847e-09 deg/d
Q 3.619508684352655 2.3792e-08 au
  Orbit Determination Parameters
   # obs. used (total)      893  
   data-arc span      7739 days (21.19 yr)  
   first obs. used      1999-09-30  
   last obs. used      2020-12-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50049  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:47:39  

Additional Information
 Earth MOID = 1.42356 au 
 Jupiter MOID = 1.56393 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 15.07   n/a E2021B10  
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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