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 ]  
22317 (1991 LL2)
Classification: Main-belt Asteroid          SPK-ID: 2022317
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1375138013708199 3.2891e-08  
a 3.17327162596267 1.5246e-08 au
q 2.736902981894381 1.0427e-07 au
i 1.857765477731327 3.6326e-06 deg
node 211.775388046031 0.00011839 deg
peri 85.13290488873109 0.0001197 deg
M 45.3195598668918 1.5164e-05 deg
tp 2458940.578333858990
(2020-Apr-01.07833386)
8.7438e-05 TDB
period 2064.711133241224
5.65
1.488e-05
4.074e-08
d
yr
n .1743585309364148 1.2566e-09 deg/d
Q 3.609640270030959 1.7343e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1614  
   data-arc span      11296 days (30.93 yr)  
   first obs. used      1990-03-02  
   last obs. used      2021-02-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53407  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:04:23  

Additional Information
 Earth MOID = 1.71988 au 
 Jupiter MOID = 1.59223 au 
 T_jup = 3.186 
[ 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 13.82   n/a E2021B10  

22317 (1991 LL2)          Discovered 1991-Jun-06 by Elst, E. W. at La Silla
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 LL2 = 1990 EF9 = 1998 SP138 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-21 04:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin