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 ]  
72824 (2001 HG4)
Classification: Main-belt Asteroid          SPK-ID: 2072824
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2459123295519683 5.9403e-08  
a 3.059151939011407 1.749e-08 au
q 2.306868759235691 1.8275e-07 au
i 13.11749937876456 6.4213e-06 deg
node 229.2354575251285 1.8573e-05 deg
peri 338.1220896022221 2.0152e-05 deg
M 253.736305463821 9.2593e-06 deg
tp 2459777.375917083634
(2022-Jul-16.87591708)
5.2912e-05 TDB
period 1954.339448261911
5.35
1.676e-05
4.589e-08
d
yr
n .1842054615026911 1.5797e-09 deg/d
Q 3.811435118787123 2.1791e-08 au
  Orbit Determination Parameters
   # obs. used (total)      730  
   data-arc span      8066 days (22.08 yr)  
   first obs. used      1998-12-15  
   last obs. used      2021-01-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53539  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:04:16  

Additional Information
 Earth MOID = 1.30586 au 
 Jupiter MOID = 1.21667 au 
 T_jup = 3.149 
[ 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 14.64   n/a MPCxxxxx  

72824 (2001 HG4)          Discovered 2001-Apr-19 by Broughton, J. at Reedy Creek
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 HG4 = 2002 RH127 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-22 05:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin