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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1968378538628942 5.7021e-08  
a 3.025717768783954 2.2868e-08 au
q 2.430141976781696 1.7662e-07 au
i 6.107497513794093 6.7113e-06 deg
node 343.7604530371756 5.6863e-05 deg
peri 285.0421532057708 5.9745e-05 deg
M 48.66552700899421 1.6696e-05 deg
tp 2458740.627705813483
(2019-Sep-14.12770581)
8.9246e-05 TDB
period 1922.388015850638
5.26
2.1794e-05
5.967e-08
d
yr
n .1872670850170191 2.123e-09 deg/d
Q 3.621293560786213 2.7369e-08 au
  Orbit Determination Parameters
   # obs. used (total)      714  
   data-arc span      7240 days (19.82 yr)  
   first obs. used      1999-09-30  
   last obs. used      2019-07-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54746  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:04:49  

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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