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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1577593587825288 4.0851e-08  
a 2.742158205151532 1.7308e-08 au
q 2.309557085026576 1.113e-07 au
i 4.663809882695882 4.5929e-06 deg
node 91.02449637274108 6.1327e-05 deg
peri 174.6513834509402 6.3649e-05 deg
M 43.42228160163506 1.6372e-05 deg
tp 2458400.445959887635
(2018-Oct-08.94595989)
7.4987e-05 TDB
period 1658.582916051547
4.54
1.5703e-05
4.299e-08
d
yr
n .2170527602304157 2.055e-09 deg/d
Q 3.174759325276487 2.0039e-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 = 1.29332 au 
 Jupiter MOID = 1.90765 au 
 T_jup = 3.327 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456891.5 (2014-Aug-22.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1578175241465664 4.0682e-08  
q 2.310218407487108 1.1088e-07 au
tp 2456743.945779408817
(2014-Mar-27.44577941)
7.3592e-05 TDB
node 91.0615241764602 6.1377e-05 deg
peri 175.1890519471582 6.3714e-05 deg
i 4.662093757458559 4.5904e-06 deg
  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
 Jupiter MOID = 1.90765 au 
 T_jup = 3.327 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.654987965074826E-15 -4.472059430903964E-15 2.688168204576218E-13 9.630472196451514E-15 7.870827151388547E-15 -1.291488599383917E-15
q -4.472059430903964E-15 1.229399313767088E-14 -7.446576718405813E-13 -2.412343568984046E-14 -2.19166823967567E-14 3.773451543234937E-15
tp 2.688168204576218E-13 -7.446576718405813E-13 5.415726798108863E-9 2.347200993146955E-11 1.286056348178408E-9 -1.50786648846284E-12
node 9.630472196451514E-15 -2.412343568984046E-14 2.347200993146955E-11 3.767081888052303E-9 -3.748501107850497E-9 5.388664991494582E-11
peri 7.870827151388547E-15 -2.19166823967567E-14 1.286056348178408E-9 -3.748501107850497E-9 4.059523944883061E-9 -5.401327753861371E-11
i -1.291488599383917E-15 3.773451543234937E-15 -1.50786648846284E-12 5.388664991494582E-11 -5.401327753861371E-11 2.107168903609474E-11

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

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