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 ]  
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1976957825197281 4.5593e-08  
a 2.631288358021148 1.9551e-08 au
q 2.111093747047107 1.2148e-07 au
i 14.43097251693119 4.6345e-06 deg
node 36.33195633290421 2.4826e-05 deg
peri 344.0225031064114 2.9189e-05 deg
M 87.33606745044415 1.8535e-05 deg
tp 2458622.281972677812
(2019-May-18.78197268)
7.7736e-05 TDB
period 1559.01786983077
4.27
1.7376e-05
4.757e-08
d
yr
n .2309146078223451 2.5736e-09 deg/d
Q 3.15148296899519 2.3416e-08 au
  Orbit Determination Parameters
   # obs. used (total)      667  
   data-arc span      9705 days (26.57 yr)  
   first obs. used      1993-10-09  
   last obs. used      2020-05-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56925  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:58:58  

Additional Information
 Earth MOID = 1.1184 au 
 Jupiter MOID = 2.30873 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-Dec-03 20:47 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin