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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
216720 (2005 EW198)
Classification: Main-belt Asteroid          SPK-ID: 2216720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1672947841074553 4.0508e-08  
a 2.423154330000762 1.2394e-08 au
q 2.017773249504239 1.0112e-07 au
i 1.962526506720312 5.1367e-06 deg
node 211.3967352738334 0.00015719 deg
peri 30.18050457838601 0.00015825 deg
M 77.39835012399156 1.9318e-05 deg
tp 2459100.290323503522
(2020-Sep-07.79032350)
7.3124e-05 TDB
period 1377.748793971743
3.77
1.057e-05
2.894e-08
d
yr
n .2612958193650094 2.0047e-09 deg/d
Q 2.828535410497285 1.4467e-08 au
  Orbit Determination Parameters
   # obs. used (total)      220  
   data-arc span      8936 days (24.47 yr)  
   first obs. used      1997-02-15  
   last obs. used      2021-08-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57621  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 19:41:03  

Additional Information
 Earth MOID = 1.00571 au 
 Jupiter MOID = 2.181 au 
 T_jup = 3.492 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457267.5 (2015-Sep-02.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1673042615596512 4.0469e-08  
q 2.016870680687619 1.008e-07 au
tp 2457722.144250409401
(2016-Nov-29.64425041)
7.0038e-05 TDB
node 211.5241866865111 0.00015743 deg
peri 29.93711961511637 0.00015849 deg
i 1.960786753093739 5.1331e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      220  
   data-arc span      8936 days (24.47 yr)  
   first obs. used      1997-02-15  
   last obs. used      2021-08-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57621  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 19:41:03  

Additional Information
 Jupiter MOID = 2.181 au 
 T_jup = 3.492 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.637751477038232E-15 -4.059759716696727E-15 -3.471557531735754E-13 5.893399830231544E-17 -3.819855652862069E-14 -5.60924217995308E-16
q -4.059759716696727E-15 1.016163758285822E-14 1.002490850895681E-12 2.589601630801699E-15 1.192828350206553E-13 1.419662493008585E-15
tp -3.471557531735754E-13 1.002490850895681E-12 4.905385232585881E-9 3.89207578529404E-11 1.308558659624497E-9 1.563089025092051E-13
node 5.893399830231544E-17 2.589601630801699E-15 3.89207578529404E-11 2.478546079101261E-8 -2.475945188855103E-8 -2.256318270676842E-10
peri -3.819855652862069E-14 1.192828350206553E-13 1.308558659624497E-9 -2.475945188855103E-8 2.512058257729446E-8 2.255277693926382E-10
i -5.60924217995308E-16 1.419662493008585E-15 1.563089025092051E-13 -2.256318270676842E-10 2.255277693926382E-10 2.63487457129213E-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 17.44   n/a MPO638141  

216720 (2005 EW198)          Discovered 2005-Mar-11 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-25 01:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin