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18696 (1998 HB34)
Classification: Main-belt Asteroid          SPK-ID: 2018696
[ 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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1089138745321188 4.7159e-08  
a 2.997128741132771 1.9977e-08 au
q 2.670699837464429 1.3616e-07 au
i 10.71665455738147 5.0916e-06 deg
node 201.2843174206245 2.301e-05 deg
peri 192.2894977932377 3.0224e-05 deg
M 299.476719031984 2.168e-05 deg
tp 2459519.122533666860
(2021-Oct-31.62253367)		 0.00011562 TDB
period 1895.206444288533
5.19		 1.8949e-05
5.188e-08		 d
yr
n .1899529210049438 1.8992e-09 deg/d
Q 3.323557644801113 2.2153e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1245  
   data-arc span      11019 days (30.17 yr)  
   first obs. used      1990-10-15  
   last obs. used      2020-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55694  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:39:37  

Additional Information
 Earth MOID = 1.67623 au 
 Jupiter MOID = 2.11855 au 
 T_jup = 3.219 
[ 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 13.69   n/a E2021B10  
diameter diameter 6.270 km 0.281 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.179   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18696 (1998 HB34)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HB34 = 1995 UR5 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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