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 ]  
17632 (1996 HW21)
Classification: Main-belt Asteroid          SPK-ID: 2017632
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09867057905131951 3.2754e-08  
a 2.276211552665646 6.4097e-09 au
q 2.051616440720823 7.2368e-08 au
i 2.380318944599128 3.8154e-06 deg
node 221.5512405202164 6.9151e-05 deg
peri 289.9375930494247 7.152e-05 deg
M 114.6508609313917 1.8044e-05 deg
tp 2458801.022630722559
(2019-Nov-13.52263072)
6.2711e-05 TDB
period 1254.34603605757
3.43
5.2982e-06
1.451e-08
d
yr
n .28700214267148 1.2123e-09 deg/d
Q 2.500806664610468 7.0421e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1801  
   data-arc span      9381 days (25.68 yr)  
   first obs. used      1994-11-11  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48392  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:08:51  

Additional Information
 Earth MOID = 1.06338 au 
 Jupiter MOID = 2.49154 au 
 T_jup = 3.601 
[ 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 14.82   n/a E2021B10  
diameter diameter 3.194 km 0.246 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.190   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17632 (1996 HW21)          Discovered 1996-Apr-21 by JPL/GEODSS NEAT at Haleakala
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ 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 2021-Apr-19 10:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin