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 ]  
22573 Johnzhou (1998 HY43)
Classification: Main-belt Asteroid          SPK-ID: 2022573
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1210146758714618 2.7069e-08  
a 2.24751029903589 6.4134e-09 au
q 1.97552856868029 6.0126e-08 au
i 3.26845121274816 3.4722e-06 deg
node 53.47523129932681 5.6483e-05 deg
peri 243.7064953961877 5.8627e-05 deg
M 183.5023147959898 1.6137e-05 deg
tp 2459803.875227832486
(2022-Aug-12.37522783)
5.5743e-05 TDB
period 1230.696491960336
3.37
5.2678e-06
1.442e-08
d
yr
n .2925172878542686 1.2521e-09 deg/d
Q 2.519492029391491 7.1896e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1171  
   data-arc span      9949 days (27.24 yr)  
   first obs. used      1993-12-14  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54064  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:07:45  

Additional Information
 Earth MOID = .960345 au 
 Jupiter MOID = 2.64459 au 
 T_jup = 3.618 
[ 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 15.79   n/a E2021B10  

22573 Johnzhou           Discovered 1998 Apr. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
John Cong Zhou (b. 1988) is a finalist in the 2006 Intel Science Talent Search (STS), a science competition for high school seniors, for his materials science project. He attends the Detroit Country Day School, Beverly Hills, Michigan.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060314/MPCPages.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 HY43 = 1999 VR89 
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-22 03:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin