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160021 (1995 FE7)
Classification: Main-belt Asteroid          SPK-ID: 2160021
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1575588070169485 4.0862e-08  
a 2.74266550504946 1.7207e-08 au
q 2.310534400027331 1.1129e-07 au
i 4.663785386544828 4.593e-06 deg
node 91.02528447863688 6.132e-05 deg
peri 174.730186413326 6.3648e-05 deg
M 130.1709352476645 1.6609e-05 deg
tp 2458400.613321482550
(2018-Oct-09.11332148)
7.5093e-05 TDB
period 1659.04319466858
4.54
1.5613e-05
4.275e-08
d
yr
n .2169925419403657 2.0421e-09 deg/d
Q 3.174796610071589 1.9919e-08 au
  Orbit Determination Parameters
   # obs. used (total)      358  
   data-arc span      8985 days (24.60 yr)  
   first obs. used      1995-03-24  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5584  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 18:37:10  

Additional Information
 Earth MOID = 1.2947 au 
 Jupiter MOID = 1.90834 au 
 T_jup = 3.326 
[ 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 16.0   n/a MPO439948  
diameter diameter 2.875 km 0.760 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.085   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160021 (1995 FE7)          Discovered 1995-Mar-24 by Spacewatch at Kitt Peak
Reference: 20070730/Numbers.arcLast Updated: 2007-08-06

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Alternate Designations
 1995 FE7 = 2001 TT143 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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