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18324 (1984 HA2)
Classification: Main-belt Asteroid          SPK-ID: 2018324
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2995490518857888 4.0353e-08  
a 3.030062280012727 2.1574e-08 au
q 2.122409996880023 1.2974e-07 au
i 7.786699595655376 3.9673e-06 deg
node 255.1391764480929 3.5488e-05 deg
peri 332.5288127526004 3.6667e-05 deg
M 358.4452726312932 1.2242e-05 deg
tp 2459208.820080006181
(2020-Dec-25.32008001)
6.5563e-05 TDB
period 1926.52992576858
5.27
2.0576e-05
5.633e-08
d
yr
n .1868644733646583 1.9957e-09 deg/d
Q 3.937714563145431 2.8037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1371  
   data-arc span      13178 days (36.08 yr)  
   first obs. used      1984-04-27  
   last obs. used      2020-05-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51357  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:26:34  

Additional Information
 Earth MOID = 1.11462 au 
 Jupiter MOID = 1.11554 au 
 T_jup = 3.160 
[ 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 13.68   n/a E2021B10  
diameter diameter 10.221 km 0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.001 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18324 (1984 HA2)          Discovered 1984-Apr-27 by La Silla at La Silla
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1984 HA2 = 2000 SQ6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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