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18341 (1989 SJ5)
Classification: Main-belt Asteroid          SPK-ID: 2018341
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07189870015694734 1.0985e-08  
a 2.341627614230869 7.6257e-09 au
q 2.173267632516056 2.7653e-08 au
i 7.136251431820823 3.6544e-07 deg
node 47.8187719751856 5.7302e-06 deg
peri 185.0113079122511 1.7339e-05 deg
M 38.62268121271347 1.7121e-05 deg
tp 2459060.084486640353
(2020-Jul-29.58448664)
6.2319e-05 TDB
period 1308.805686769193
3.58
6.3933e-06
1.75e-08
d
yr
n .2750599295520067 1.3436e-09 deg/d
Q 2.509987595945682 8.1739e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2186  
   data-arc span      25448 days (69.67 yr)  
   first obs. used      1950-12-11  
   last obs. used      2020-08-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43618  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:26:57  

Additional Information
 Earth MOID = 1.16109 au 
 Jupiter MOID = 2.46907 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 13.77   n/a E2021B10  
diameter diameter 4.380 km 0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.403   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18341 (1989 SJ5)          Discovered 1989-Sep-26 by Elst, E. W. at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1989 SJ5 = 1984 DV2 = 1995 GM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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