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 ]  
11724 Ronaldhsu (1998 HH146)
Classification: Main-belt Asteroid          SPK-ID: 2011724
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09502097288368286 3.0489e-08  
a 2.248781131414685 6.5513e-09 au
q 2.035099760505192 6.8579e-08 au
i 3.266712720841748 3.3868e-06 deg
node 96.83855343697739 6.5701e-05 deg
peri 15.07679724579279 6.8777e-05 deg
M 295.0362125729925 2.1156e-05 deg
tp 2459222.773682983951
(2021-Jan-08.27368298)
7.2695e-05 TDB
period 1231.740467166116
3.37
5.3826e-06
1.474e-08
d
yr
n .2922693616036319 1.2772e-09 deg/d
Q 2.462462502324177 7.1738e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1762  
   data-arc span      17070 days (46.74 yr)  
   first obs. used      1974-02-19  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47994  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:46:52  

Additional Information
 Earth MOID = 1.05192 au 
 Jupiter MOID = 2.60746 au 
 T_jup = 3.621 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456855.5 (2014-Jul-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09465665439270905 3.038e-08  
q 2.036429239450019 6.8351e-08 au
tp 2456757.489438789981
(2014-Apr-09.98943879)
7.0454e-05 TDB
node 96.86329514548574 6.5735e-05 deg
peri 14.7323928284471 6.8853e-05 deg
i 3.265971181034069 3.3853e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1762  
   data-arc span      17070 days (46.74 yr)  
   first obs. used      1974-02-19  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47994  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:46:52  

Additional Information
 Jupiter MOID = 2.60746 au 
 T_jup = 3.621 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.22935685888069E-16 -2.068564896225338E-15 1.64706874920639E-13 -7.554979547039894E-15 5.37250498804819E-14 4.422451713908004E-17
q -2.068564896225338E-15 4.671921025250947E-15 -2.900449616954314E-13 1.648989030157756E-14 -9.760968049307288E-14 -7.183928552197805E-17
tp 1.64706874920639E-13 -2.900449616954314E-13 4.9638182997414E-9 -7.011112468623006E-12 1.457577259416748E-9 -4.375347193766425E-13
node -7.554979547039894E-15 1.648989030157756E-14 -7.011112468623006E-12 4.32107200744317E-9 -4.315560145177597E-9 -1.178862654236959E-12
peri 5.37250498804819E-14 -9.760968049307288E-14 1.457577259416748E-9 -4.315560145177597E-9 4.740774253980877E-9 1.055212949509372E-12
i 4.422451713908004E-17 -7.183928552197805E-17 -4.375347193766425E-13 -1.178862654236959E-12 1.055212949509372E-12 1.14599291447722E-11

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 14.6   n/a MPO449027  

11724 Ronaldhsu           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Ronald Hsu (b. 1985) is a finalist in the 2002 Intel International Science and Engineering Fair for his mathematics project. He attends the West Shore Jr/Sr High School, Palm Bay, Florida, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2147-Apr-21 18:42 00:04 Thisb 0.042065700267557 0.0420604434820955 0.0420709603332167 4.39138606567125 4.39138602876116 2505346.279205583 3.78376257301299 644.466838091725 27.7185473284467 66.1254095312469 207542.576994275 T 31 CATAB v2.0f-lin.ifort 2020-Dec-18 02:46:56 2020-Dec-18 02:46

Alternate Designations
 1998 HH146 = 1974 DM = 1976 YF7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-15 16:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin