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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1115260213689879 4.9407e-08  
a 2.993868462122716 1.9212e-08 au
q 2.659974224040079 1.4268e-07 au
i 10.72991734889594 5.2522e-06 deg
node 201.5402782130552 2.2989e-05 deg
peri 192.1979494294641 2.9925e-05 deg
M 185.4926032906285 2.0916e-05 deg
tp 2459517.689003001676
(2021-Oct-30.18900300)
0.00011403 TDB
period 1892.114874823935
5.18
1.8213e-05
4.986e-08
d
yr
n .1902632893964742 1.8314e-09 deg/d
Q 3.327762700205353 2.1355e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1171  
   data-arc span      10534 days (28.84 yr)  
   first obs. used      1990-10-15  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57148  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:26:33  

Additional Information
 Earth MOID = 1.66606 au 
 Jupiter MOID = 2.11068 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 13.7   n/a MPO395182  
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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