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129887 (1999 TT17)
Classification: Main-belt Asteroid          SPK-ID: 2129887
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08241678671219435 3.8763e-08  
a 2.699603599308476 1.8673e-08 au
q 2.477110945256797 1.0554e-07 au
i 2.70962126388876 5.9549e-06 deg
node 25.34861968001515 9.3063e-05 deg
peri 107.6455691898896 0.00010083 deg
M 176.7951830969226 3.8019e-05 deg
tp 2458404.860470222673
(2018-Oct-13.36047022)
0.00016981 TDB
period 1620.124630673965
4.44
1.681e-05
4.602e-08
d
yr
n .2222051274229697 2.3055e-09 deg/d
Q 2.922096253360155 2.0212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      523  
   data-arc span      7524 days (20.60 yr)  
   first obs. used      1999-10-15  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59298  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:48:30  

Additional Information
 Earth MOID = 1.49289 au 
 Jupiter MOID = 2.09651 au 
 T_jup = 3.362 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.84   n/a E2021B55  
diameter diameter 2.421 km 0.255 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.173   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129887 (1999 TT17)          Discovered 1999-Oct-15 by Kusnirak, P., Pravec, P. at Ondrejov
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

Alternate Designations
 1999 TT17 = 2001 CK11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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