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 ]  
379798 (2011 HL87)
Classification: Main-belt Asteroid          SPK-ID: 2379798
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1097602174710506 1.1423e-07  
a 3.017337094253409 6.2955e-08 au
q 2.686153518604687 3.7192e-07 au
i 11.35932475541665 7.5523e-06 deg
node 120.5314902967406 4.9571e-05 deg
peri 260.1844020329061 6.1704e-05 deg
M 25.0891681426394 3.3579e-05 deg
tp 2458467.080921727242
(2018-Dec-14.58092173)
0.00017827 TDB
period 1914.406564024883
5.24
5.9915e-05
1.64e-07
d
yr
n .1880478299463879 5.8853e-09 deg/d
Q 3.348520669902132 6.9865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      113  
   data-arc span      3725 days (10.20 yr)  
   first obs. used      2008-11-09  
   last obs. used      2019-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60519  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:14:18  

Additional Information
 Earth MOID = 1.71662 au 
 Jupiter MOID = 2.17796 au 
 T_jup = 3.209 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457228.5 (2015-Jul-25.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1069129661388089 1.1347e-07  
q 2.698885168812844 3.6845e-07 au
tp 2456550.061202378614
(2013-Sep-14.56120238)
0.00019314 TDB
node 120.6444472602122 4.9448e-05 deg
peri 259.9467227053553 6.2415e-05 deg
i 11.36726332055703 7.5608e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      113  
   data-arc span      3725 days (10.20 yr)  
   first obs. used      2008-11-09  
   last obs. used      2019-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60519  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:14:18  

Additional Information
 Jupiter MOID = 2.17796 au 
 T_jup = 3.209 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.287481549039921E-14 -4.139187128772907E-14 -5.307606808415138E-12 1.752290942612996E-14 -1.612097003169906E-12 -4.317485365421124E-14
q -4.139187128772907E-14 1.357577076273302E-13 1.287667685678917E-11 -4.846619944910124E-14 4.534837871508319E-12 1.445444806281856E-13
tp -5.307606808415138E-12 1.287667685678917E-11 3.730344474511127E-8 -4.913516085189071E-12 7.423520883183392E-9 7.038045556843295E-12
node 1.752290942612996E-14 -4.846619944910124E-14 -4.913516085189071E-12 2.445137532074693E-9 -2.398661419317113E-9 1.389285826493029E-10
peri -1.612097003169906E-12 4.534837871508319E-12 7.423520883183392E-9 -2.398661419317113E-9 3.895660608634128E-9 -1.324456547125222E-10
i -4.317485365421124E-14 1.445444806281856E-13 7.038045556843295E-12 1.389285826493029E-10 -1.324456547125222E-10 5.716528971035244E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO455733  

379798 (2011 HL87)          Discovered 2008-Nov-09 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2013-11-20

Alternate Designations
 2011 HL87 = 2010 CW150 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-24 09:00 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin