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 ]  
(2007 HL4)
Classification: Amor [NEO]          SPK-ID: 3374389
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09074281879222157 7.3006e-08  
a 1.119979909490564 3.0345e-09 au
q 1.018349775512733 7.9155e-08 au
i 6.539575283703751 5.6462e-06 deg
node 31.0023503956384 1.0894e-05 deg
peri 139.2232736721638 5.7831e-05 deg
M 64.79228457307829 4.7045e-05 deg
tp 2458922.582579258744
(2020-Mar-14.08257926)
5.6321e-05 TDB
period 432.9261061201585
1.19
1.7595e-06
4.817e-09
d
yr
n .8315506847722465 3.3795e-09 deg/d
Q 1.221610043468395 3.3098e-09 au
  Orbit Determination Parameters
   # obs. used (total)      72  
   data-arc span      4756 days (13.02 yr)  
   first obs. used      2007-04-19  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55629  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-22 06:30:18  

Additional Information
 Earth MOID = .0324571 au 
 Jupiter MOID = 3.73952 au 
 T_jup = 5.564 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 24.2   n/a MPO119740  
rotation period rot_per 1.48 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Kwiatkowski, T.; Polinka, M.; Loaring, N.; Buckley, D.A.H.; et al. (2010) Astron. Astrophys. 511, A49.]

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-23 04:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin