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11867 (1989 TW)
Classification: Main-belt Asteroid          SPK-ID: 2011867
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1615499547186714 3.3249e-08  
a 2.225454348941857 5.5745e-09 au
q 1.865932299641829 7.2612e-08 au
i 4.638090469400536 3.5906e-06 deg
node 284.6844914993381 4.3314e-05 deg
peri 84.97482705550649 4.5018e-05 deg
M 149.5368038640237 1.1303e-05 deg
tp 2458696.799879172406
(2019-Aug-01.29987917)
3.775e-05 TDB
period 1212.624844267917
3.32
4.5562e-06
1.247e-08
d
yr
n .2968766487852543 1.1155e-09 deg/d
Q 2.584976398241884 6.475e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1493  
   data-arc span      11435 days (31.31 yr)  
   first obs. used      1989-09-27  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49235  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:10:00  

Additional Information
 Earth MOID = .870669 au 
 Jupiter MOID = 2.90324 au 
 T_jup = 3.625 
[ 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 15.01   n/a E2021B10  
diameter diameter 3.085 km 0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.223   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11867 (1989 TW)          Discovered 1989-Oct-04 by Suzuki, K., Furuta, T. at Toyota
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1989 TW = 1994 CG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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