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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07166358150956181 3.8981e-08  
a 2.34101299694144 9.1552e-09 au
q 2.173247621220183 9.2996e-08 au
i 7.137238633363387 4.1312e-06 deg
node 47.82372608664823 3.3464e-05 deg
peri 184.9088483242242 4.6516e-05 deg
M 343.6909587614692 3.4099e-05 deg
tp 2459059.769340422883
(2020-Jul-29.26934042)
0.00012399 TDB
period 1308.290428613818
3.58
7.6747e-06
2.101e-08
d
yr
n .2751682593760419 1.6142e-09 deg/d
Q 2.508778372662696 9.8113e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1806  
   data-arc span      25256 days (69.15 yr)  
   first obs. used      1950-12-11  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46539  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:23:41  

Additional Information
 Earth MOID = 1.1624 au 
 Jupiter MOID = 2.47126 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 13.7   n/a MPO365472  
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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