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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1596495798845333 5.1182e-08  
a 2.55098572409144 1.3558e-08 au
q 2.1437219249488 1.2735e-07 au
i 26.34650599610195 5.7452e-06 deg
node 206.6242079687811 1.0397e-05 deg
peri 162.4202162406632 1.9643e-05 deg
M 280.6236604791771 2.0872e-05 deg
tp 2459328.632340101376
(2021-Apr-24.13234010)
8.7578e-05 TDB
period 1488.19715232027
4.07
1.1864e-05
3.248e-08
d
yr
n .2419034329145965 1.9285e-09 deg/d
Q 2.95824952323408 1.5723e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1282  
   data-arc span      25177 days (68.93 yr)  
   first obs. used      1951-07-14  
   last obs. used      2020-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50467  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:21:02  

Additional Information
 Earth MOID = 1.15399 au 
 Jupiter MOID = 2.52329 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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