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249630 (1999 TT71)
Classification: Main-belt Asteroid          SPK-ID: 2249630
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09803989024067458 5.7665e-08  
a 3.157404843976055 4.1614e-08 au
q 2.847853219627269 1.9604e-07 au
i 6.907126013525062 9.3665e-06 deg
node 28.73134562778703 5.2717e-05 deg
peri 272.1750362472936 7.1504e-05 deg
M 357.5641890532272 5.0802e-05 deg
tp 2459214.365480052354
(2020-Dec-30.86548005)
0.00028929 TDB
period 2049.244759927131
5.61
4.0513e-05
1.109e-07
d
yr
n .1756744762947698 3.473e-09 deg/d
Q 3.466956468324842 4.5694e-08 au
  Orbit Determination Parameters
   # obs. used (total)      162  
   data-arc span      7137 days (19.54 yr)  
   first obs. used      1999-10-09  
   last obs. used      2019-04-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56146  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 02:08:13  

Additional Information
 Earth MOID = 1.84177 au 
 Jupiter MOID = 1.76608 au 
 T_jup = 3.187 
[ 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 16.4   n/a MPO433636  
diameter diameter 3.472 km 1.426 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249630 (1999 TT71)          Discovered 1999-Oct-09 by Spacewatch at Kitt Peak
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Alternate Designations
 1999 TT71 = 1999 US62 = 2005 UP384 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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