Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
58830 (1998 HE23)
Classification: Main-belt Asteroid          SPK-ID: 2058830
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3413729055173254 4.7489e-08  
a 2.583904598895746 1.5325e-08 au
q 1.701829578391126 1.3153e-07 au
i 11.05006894349651 3.6153e-06 deg
node 178.9993881558852 1.8315e-05 deg
peri 107.9489788144565 2.0066e-05 deg
M 326.4066298759667 5.6427e-06 deg
tp 2458742.067712092499
(2019-Sep-15.56771209)
2.4399e-05 TDB
period 1517.096265278812
4.15
1.3497e-05
3.695e-08
d
yr
n .237295422999304 2.1111e-09 deg/d
Q 3.465979619400366 2.0557e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1073  
   data-arc span      10648 days (29.15 yr)  
   first obs. used      1990-07-24  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50171  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:27:33  

Additional Information
 Earth MOID = .725053 au 
 Jupiter MOID = 1.90136 au 
 T_jup = 3.314 
[ 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 MPO493285  
diameter diameter 5.392 km 0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58830 (1998 HE23)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HE23 = 2002 CZ146 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-22 00:33 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin