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44728 (1999 TT15)
Classification: Main-belt Asteroid          SPK-ID: 2044728
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1365136614051584 4.253e-08  
a 2.649879146183398 1.2551e-08 au
q 2.288134441656728 1.1664e-07 au
i 13.11643577931954 5.1361e-06 deg
node 241.8127127033521 2.0022e-05 deg
peri 216.0821028299504 2.9442e-05 deg
M 257.7681369304829 2.3388e-05 deg
tp 2459447.926087780912
(2021-Aug-21.42608778)
0.00010346 TDB
period 1575.569365214438
4.31
1.1194e-05
3.065e-08
d
yr
n .2284888294657871 1.6233e-09 deg/d
Q 3.011623850710069 1.4264e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1011  
   data-arc span      12385 days (33.91 yr)  
   first obs. used      1986-11-28  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50194  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:55:44  

Additional Information
 Earth MOID = 1.31714 au 
 Jupiter MOID = 2.26501 au 
 T_jup = 3.341 
[ 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 14.8   n/a MPO436092  
diameter diameter 6.158 km 0.399 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

44728 (1999 TT15)          Discovered 1999-Oct-13 by Kusnirak, P., Pravec, P. at Ondrejov
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 TT15 = 1986 WT6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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