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JPL Small-Body Database Browser
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100844 (1998 HH23)
Classification: Main-belt Asteroid          SPK-ID: 2100844
[ 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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04523545368660958 4.2253e-08  
a 3.118489643813596 2.5243e-08 au
q 2.977423349958694 1.323e-07 au
i 3.427718427748173 4.9599e-06 deg
node 150.5075764658096 7.3434e-05 deg
peri 52.15446128976144 9e-05 deg
M 359.5701286265365 5.2753e-05 deg
tp 2459002.901877812278
(2020-Jun-02.40187781)		 0.00029476 TDB
period 2011.476143324896
5.51		 2.4423e-05
6.687e-08		 d
yr
n .1789730398715707 2.1731e-09 deg/d
Q 3.259555937668497 2.6385e-08 au
   Orbit Determination Parameters
   # obs. used (total)      560  
   data-arc span      8838 days (24.20 yr)  
   first obs. used      1995-11-15  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59937  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:12:10  

Additional Information
 Earth MOID = 1.97554 au 
 Jupiter MOID = 1.69844 au 
 T_jup = 3.213 
[ 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 15.1   n/a MPO436469  
diameter diameter 4.898 km 0.494 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100844 (1998 HH23)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 HH23 = 2001 XK78 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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