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9747 (1989 AT)
Classification: Main-belt Asteroid          SPK-ID: 2009747
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1232058601777599 3.2187e-08  
a 3.026504805985066 1.6435e-08 au
q 2.653621678031552 1.0227e-07 au
i 13.26663606599863 3.5894e-06 deg
node 99.86563142897459 1.8823e-05 deg
peri 356.3997135886723 2.7789e-05 deg
M 350.405645281925 2.0009e-05 deg
tp 2459051.753526088001
(2020-Jul-21.25352609)
0.00010702 TDB
period 1923.138130063053
5.27
1.5665e-05
4.289e-08
d
yr
n .1871940420567694 1.5248e-09 deg/d
Q 3.399387933938581 1.8459e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1892  
   data-arc span      11621 days (31.82 yr)  
   first obs. used      1989-01-04  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46907  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:11:22  

Additional Information
 Earth MOID = 1.67059 au 
 Jupiter MOID = 1.78174 au 
 T_jup = 3.193 
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Orbital Elements at Epoch 2457092.5 (2015-Mar-11.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1209102162888376 3.2074e-08  
q 2.660460265723163 1.0153e-07 au
tp 2457133.161777088761
(2015-Apr-20.66177709)
0.00010564 TDB
node 100.0035276071407 1.8813e-05 deg
peri 357.1416505262483 2.807e-05 deg
i 13.26890393352999 3.5885e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1892  
   data-arc span      11621 days (31.82 yr)  
   first obs. used      1989-01-04  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46907  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:11:22  

Additional Information
 Jupiter MOID = 1.78174 au 
 T_jup = 3.193 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.028725592429288E-15 -3.225547040284256E-15 -8.982157547004758E-13 -9.030775185860768E-15 -1.718582966633939E-13 -1.534724235094902E-15
q -3.225547040284256E-15 1.030743596387219E-14 2.919347617576207E-12 2.986417158692258E-14 5.569788605837625E-13 5.357633810347606E-15
tp -8.982157547004758E-13 2.919347617576207E-12 1.115897978052095E-8 4.210542832320665E-11 2.230730817559245E-9 -2.187666228971098E-12
node -9.030775185860768E-15 2.986417158692258E-14 4.210542832320665E-11 3.539304029728726E-10 -3.354886941640104E-10 -1.225921130394462E-11
peri -1.718582966633939E-13 5.569788605837625E-13 2.230730817559245E-9 -3.354886941640104E-10 7.879279198815697E-10 1.149175505731133E-11
i -1.534724235094902E-15 5.357633810347606E-15 -2.187666228971098E-12 -1.225921130394462E-11 1.149175505731133E-11 1.287744079548585E-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 13.1   n/a MPO502243  
diameter diameter 9.193 km 0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.140   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9747 (1989 AT)          Discovered 1989-Jan-04 by Ueda, S., Kaneda, H. at Kushiro
Reference: 19981208/Numbers.arcLast Updated: 2004-04-19

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