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18325 (1984 SB2)
Classification: Main-belt Asteroid          SPK-ID: 2018325
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1600096325759768 5.6524e-08  
a 2.549500619052991 1.5078e-08 au
q 2.141555961746097 1.3895e-07 au
i 26.35882974318081 5.9964e-06 deg
node 206.6443257825583 1.077e-05 deg
peri 162.5957189545507 2.0172e-05 deg
M 183.6111646655295 2.1564e-05 deg
tp 2459329.033793174168
(2021-Apr-24.53379317)
9.2473e-05 TDB
period 1486.897767907912
4.07
1.3191e-05
3.611e-08
d
yr
n .242114829795276 2.1479e-09 deg/d
Q 2.957445276359886 1.7491e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1173  
   data-arc span      24773 days (67.82 yr)  
   first obs. used      1951-07-14  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51653  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:35:47  

Additional Information
 Earth MOID = 1.15095 au 
 Jupiter MOID = 2.52075 au 
 T_jup = 3.279 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO337413  
diameter diameter 6.550 km 0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.197   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18325 (1984 SB2)          Discovered 1984-Sep-29 by Mrkos, A. at Klet
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1984 SB2 = 1999 KL5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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