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120824 (1998 HG109)
Classification: Main-belt Asteroid          SPK-ID: 2120824
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1968610769535451 4.5568e-08  
a 2.621395801085074 1.4389e-08 au
q 2.105345000561965 1.212e-07 au
i 12.00770599548003 4.8211e-06 deg
node 145.672900454661 2.5526e-05 deg
peri 98.70525508925061 3.0046e-05 deg
M 51.77639607972566 1.4525e-05 deg
tp 2458777.540160459211
(2019-Oct-21.04016046)
6.1932e-05 TDB
period 1550.234244019043
4.24
1.2764e-05
3.495e-08
d
yr
n .2322229697795127 1.912e-09 deg/d
Q 3.137446601608183 1.7221e-08 au
  Orbit Determination Parameters
   # obs. used (total)      428  
   data-arc span      8162 days (22.35 yr)  
   first obs. used      1998-03-24  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59127  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:11:00  

Additional Information
 Earth MOID = 1.13235 au 
 Jupiter MOID = 2.03063 au 
 T_jup = 3.346 
[ 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 15.9   n/a MPO475061  
diameter diameter 3.216 km 0.903 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.108   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120824 (1998 HG109)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 HG109 = 2002 CF103 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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