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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1083012892830552 4.6855e-08  
a 2.994642759397769 1.9055e-08 au
q 2.670319087612825 1.3562e-07 au
i 10.72287188172974 5.0704e-06 deg
node 201.2527169592306 2.2489e-05 deg
peri 192.5712650023112 2.9605e-05 deg
M 336.4646425521941 2.1389e-05 deg
tp 2459520.246879681247
(2021-Nov-01.74687968)		 0.000113 TDB
period 1892.848952221965
5.18		 1.8066e-05
4.946e-08		 d
yr
n .1901895022196069 1.8152e-09 deg/d
Q 3.318966431182714 2.1118e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1255  
   data-arc span      11205 days (30.68 yr)  
   first obs. used      1990-10-15  
   last obs. used      2021-06-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5552  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:00:12  

Additional Information
 Earth MOID = 1.67643 au 
 Jupiter MOID = 2.12392 au 
 T_jup = 3.220 
[ 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 13.69   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

Alternate Designations
 1998 HB34 = 1995 UR5 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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