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18706 (1998 HV93)
Classification: Main-belt Asteroid          SPK-ID: 2018706
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05728777631598644 3.9354e-08  
a 3.079729981556794 2.0683e-08 au
q 2.903299099259731 1.2729e-07 au
i 3.277915106214828 5.3664e-06 deg
node 335.0536261308509 7.8982e-05 deg
peri 285.8969972974941 9.3306e-05 deg
M 30.29338428297795 4.9172e-05 deg
tp 2459034.383534625096
(2020-Jul-03.88353463)
0.00026987 TDB
period 1974.091998977103
5.40
1.9886e-05
5.444e-08
d
yr
n .1823623216073709 1.8371e-09 deg/d
Q 3.256160863853857 2.1868e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1280  
   data-arc span      10397 days (28.47 yr)  
   first obs. used      1992-03-01  
   last obs. used      2020-08-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54676  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:35:41  

Additional Information
 Earth MOID = 1.8884 au 
 Jupiter MOID = 1.79292 au 
 T_jup = 3.223 
[ 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 13.89   n/a E2021B10  
diameter diameter 8.785 km 0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.100   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18706 (1998 HV93)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HV93 = 1992 EV16 = 1994 PS23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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