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118422 (1999 TU71)
Classification: Outer Main-belt Asteroid          SPK-ID: 2118422
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1551360739805384 3.8761e-08  
a 3.200960794044122 2.4614e-08 au
q 2.704376303490491 1.335e-07 au
i 1.248203448988769 6.5398e-06 deg
node 36.83257402069527 0.00020841 deg
peri 257.9209766689897 0.00020972 deg
M 324.4014568972373 2.492e-05 deg
tp 2459407.346741092018
(2021-Jul-11.84674109)
0.00014545 TDB
period 2091.794222537926
5.73
2.4127e-05
6.606e-08
d
yr
n .1721010585655123 1.9851e-09 deg/d
Q 3.697545284597754 2.8432e-08 au
  Orbit Determination Parameters
   # obs. used (total)      482  
   data-arc span      7579 days (20.75 yr)  
   first obs. used      1999-10-09  
   last obs. used      2020-07-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:57:12  

Additional Information
 Earth MOID = 1.68674 au 
 Jupiter MOID = 1.50367 au 
 T_jup = 3.175 
[ 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 15.29   n/a E2021B55  
diameter diameter 4.076 km 0.747 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.088   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118422 (1999 TU71)          Discovered 1999-Oct-09 by Spacewatch at Kitt Peak
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1999 TU71 = 1999 UZ54 = 2003 HZ7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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