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28457 Chloeanassis (2000 AX143)
Classification: Main-belt Asteroid          SPK-ID: 2028457
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 .08239176160245734 3.333e-08  
a 2.343284598722708 8.4642e-09 au
q 2.150217252698037 7.6069e-08 au
i 6.240308910190831 4.1208e-06 deg
node 283.7070661026545 3.8869e-05 deg
peri 326.8270681580102 5.0278e-05 deg
M 201.3909525450929 3.3107e-05 deg
tp 2459777.746675271002
(2022-Jul-17.24667527)
0.00012062 TDB
period 1310.195139761125
3.59
7.0989e-06
1.944e-08
d
yr
n .2747682303764577 1.4887e-09 deg/d
Q 2.53635194474738 9.1616e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1345  
   data-arc span      12239 days (33.51 yr)  
   first obs. used      1987-08-31  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50309  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:56:48  

Additional Information
 Earth MOID = 1.13696 au 
 Jupiter MOID = 2.50518 au 
 T_jup = 3.550 
[ 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 14.91   n/a E2021B10  
diameter diameter 2.679 km 0.495 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.296   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

28457 Chloeanassis           Discovered 2000 Jan. 5 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Chloe Anassis (b. 1995) was awarded second place in the 2011 Intel International Science and Engineering Fair for her environmental sciences project. She attends the Study School, Westmount, Quebec, Canada.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20121029/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 2000 AX143 = 1987 QK4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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