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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
379890 (2012 HE68)
Classification: Inner Main-belt Asteroid          SPK-ID: 2379890
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04958603716340886 6.9402e-08  
a 1.970112977049523 2.2184e-08 au
q 1.872422881753431 1.4358e-07 au
i 22.21598274009447 9.3629e-06 deg
node 202.7643911787372 2.208e-05 deg
peri 298.6040707260624 0.00010833 deg
M 268.2682563854589 0.00010867 deg
tp 2458857.866651531916
(2020-Jan-09.36665153)
0.00030616 TDB
period 1010.031979123993
2.77
1.706e-05
4.671e-08
d
yr
n .3564243582784679 6.0201e-09 deg/d
Q 2.067803072345615 2.3284e-08 au
  Orbit Determination Parameters
   # obs. used (total)      91  
   data-arc span      6967 days (19.07 yr)  
   first obs. used      1999-10-10  
   last obs. used      2018-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64732  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:42:25  

Additional Information
 Earth MOID = .910992 au 
 Jupiter MOID = 2.94061 au 
 T_jup = 3.779 
[ 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 17.4   n/a MPO450361  

379890 (2012 HE68)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: Last Updated: 2013-11-20

[ show close-approach data ]
Alternate Designations
 2012 HE68 = 1999 TZ169 = 2010 TW87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-11 06:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin