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 ]  
227163 (2005 QE18)
Classification: Main-belt Asteroid          SPK-ID: 2227163
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2081629656171585 6.8223e-08  
a 2.436683827810518 1.2586e-08 au
q 1.929456495942111 1.7203e-07 au
i 5.282009704302426 7.342e-06 deg
node 155.4996417313325 4.2578e-05 deg
peri 224.2243879433749 4.5905e-05 deg
M 348.7708737019652 1.8358e-05 deg
tp 2459243.835185904836
(2021-Jan-29.33518590)
7.1017e-05 TDB
period 1389.30371888963
3.80
1.0764e-05
2.947e-08
d
yr
n .2591226058818312 2.0076e-09 deg/d
Q 2.943911159678925 1.5206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      7049 days (19.30 yr)  
   first obs. used      2001-08-16  
   last obs. used      2020-12-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54514  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:38:41  

Additional Information
 Earth MOID = .934166 au 
 Jupiter MOID = 2.52354 au 
 T_jup = 3.468 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458228.5 (2018-Apr-20.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2097489276709359 6.7985e-08  
q 1.924950145663097 1.7154e-07 au
tp 2457855.025373457443
(2017-Apr-11.52537346)
6.5413e-05 TDB
node 155.5819451365284 4.2627e-05 deg
peri 224.2643463593311 4.589e-05 deg
i 5.280133194608169 7.3392e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      7049 days (19.30 yr)  
   first obs. used      2001-08-16  
   last obs. used      2020-12-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54514  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:38:41  

Additional Information
 Jupiter MOID = 2.52354 au 
 T_jup = 3.468 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.621925071184468E-15 -1.164888025004664E-14 -2.892422879656446E-12 -4.578795663495738E-15 -5.952329883128155E-13 -4.560371102814918E-15
q -1.164888025004664E-14 2.942640602283182E-14 7.296255098019914E-12 1.083842720024749E-14 1.507836976917652E-12 1.163115774670866E-14
tp -2.892422879656446E-12 7.296255098019914E-12 4.278925644595587E-9 1.215873658094158E-12 1.103571471560568E-9 4.990740748302106E-12
node -4.578795663495738E-15 1.083842720024749E-14 1.215873658094158E-12 1.817070919542677E-9 -1.808431255006135E-9 -5.81100859615917E-11
peri -5.952329883128155E-13 1.507836976917652E-12 1.103571471560568E-9 -1.808431255006135E-9 2.105903631906286E-9 5.910743146290264E-11
i -4.560371102814918E-15 1.163115774670866E-14 4.990740748302106E-12 -5.81100859615917E-11 5.910743146290264E-11 5.386321474405515E-11

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 17.34   n/a E2021B55  

227163 (2005 QE18)          Discovered 2005-Aug-25 by NEAT at Palomar
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-11 23:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin