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 ]  
56514 (2000 HM18)
Classification: Main-belt Asteroid          SPK-ID: 2056514
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1974597258126663 4.6909e-08  
a 2.630865181421406 2.0954e-08 au
q 2.111375264047845 1.2646e-07 au
i 14.43252761529642 4.7453e-06 deg
node 36.33905389036599 2.5242e-05 deg
peri 344.0274273790993 2.986e-05 deg
M 354.9693697836574 1.9122e-05 deg
tp 2458622.280418038147
(2019-May-18.78041804)
8.2954e-05 TDB
period 1558.641791690535
4.27
1.8621e-05
5.098e-08
d
yr
n .2309703242395011 2.7594e-09 deg/d
Q 3.150355098794968 2.5092e-08 au
  Orbit Determination Parameters
   # obs. used (total)      616  
   data-arc span      9555 days (26.16 yr)  
   first obs. used      1993-10-09  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58472  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:44:45  

Additional Information
 Earth MOID = 1.11797 au 
 Jupiter MOID = 2.30702 au 
 T_jup = 3.328 
[ 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 14.9   n/a MPO309579  
diameter diameter 3.025 km 0.206 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.279   0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

56514 (2000 HM18)          Discovered 2000-Apr-25 by Spacewatch at Kitt Peak
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 HM18 = 1993 TP31 
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-19 13:14 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin