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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09742451206955824 5.7801e-08  
a 3.154648357147845 4.0847e-08 au
q 2.847308280201683 1.9575e-07 au
i 6.909709328451128 9.3699e-06 deg
node 28.79521005871637 5.2698e-05 deg
peri 272.5244376516527 7.1661e-05 deg
M 322.0380140887117 5.0817e-05 deg
tp 2459216.309860580096
(2021-Jan-01.80986058)
0.00029045 TDB
period 2046.561789216948
5.60
3.9749e-05
1.088e-07
d
yr
n .1759047793703519 3.4164e-09 deg/d
Q 3.461988434094007 4.4826e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56331  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:33:50  

Additional Information
 Earth MOID = 1.84322 au 
 Jupiter MOID = 1.77257 au 
 T_jup = 3.188 
[ 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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