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
JPL Small-Body Database Browser
Search: [ help ]  
100864 (1998 HW54)
Classification: Main-belt Asteroid          SPK-ID: 2100864
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2332213922559754 5.2031e-08  
a 3.037353188791625 1.9044e-08 au
q 2.328977449328515 1.525e-07 au
i 2.648114268887915 4.5499e-06 deg
node 298.807528538314 0.00013883 deg
peri 225.8291847230971 0.00013939 deg
M 99.15324516143343 1.1583e-05 deg
tp 2458467.967887076867
(2018-Dec-15.46788708)
6.0939e-05 TDB
period 1933.487505529428
5.29
1.8185e-05
4.979e-08
d
yr
n .1861920488084172 1.7511e-09 deg/d
Q 3.745728928254734 2.3486e-08 au
  Orbit Determination Parameters
   # obs. used (total)      366  
   data-arc span      7767 days (21.26 yr)  
   first obs. used      1998-03-29  
   last obs. used      2019-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56975  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:12:31  

Additional Information
 Earth MOID = 1.33763 au 
 Jupiter MOID = 1.25554 au 
 T_jup = 3.197 
[ 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 15.7   n/a MPO432536  

100864 (1998 HW54)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-27 11:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin