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 ]  
100745 (1998 ET3)
Classification: Main-belt Asteroid          SPK-ID: 2100745
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1881833836606429 3.7761e-08  
a 2.281805622346189 1.0791e-08 au
q 1.852407719477204 8.6374e-08 au
i 7.229440992848724 4.9869e-06 deg
node 114.9068873390054 3.9305e-05 deg
peri 133.843017831133 4.2007e-05 deg
M 108.3816170247836 1.6884e-05 deg
tp 2458621.473547056132
(2019-May-17.97354706)
5.7585e-05 TDB
period 1258.972940296606
3.45
8.9306e-06
2.445e-08
d
yr
n .2859473690635371 2.0284e-09 deg/d
Q 2.711203525215174 1.2821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      767  
   data-arc span      7743 days (21.20 yr)  
   first obs. used      1998-02-27  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5533  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:34:48  

Additional Information
 Earth MOID = .846637 au 
 Jupiter MOID = 2.34484 au 
 T_jup = 3.571 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456359.5 (2013-Mar-08.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1890503824630858 3.7865e-08  
q 1.850222583930162 8.6713e-08 au
tp 2456102.585237333799
(2012-Jun-24.08523733)
5.0114e-05 TDB
node 114.9385474729559 3.9316e-05 deg
peri 133.8069034333293 4.1973e-05 deg
i 7.229055836647837 4.9851e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      767  
   data-arc span      7743 days (21.20 yr)  
   first obs. used      1998-02-27  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5533  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:34:48  

Additional Information
 Jupiter MOID = 2.34484 au 
 T_jup = 3.571 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.43379501103216E-15 -3.266691286458668E-15 -1.231673817270105E-13 -2.688422858592391E-14 1.524583368673159E-14 -4.689871895865515E-15
q -3.266691286458668E-15 7.519061836814984E-15 3.851345027303295E-13 6.093429734599662E-14 -1.958491830136333E-15 1.077551466914588E-14
tp -1.231673817270105E-13 3.851345027303295E-13 2.511453773863802E-9 4.120443729539009E-12 7.571263151246479E-10 1.673529103110074E-12
node -2.688422858592391E-14 6.093429734599662E-14 4.120443729539009E-12 1.545724393424075E-9 -1.531979717572603E-9 5.381338705403388E-11
peri 1.524583368673159E-14 -1.958491830136333E-15 7.571263151246479E-10 -1.531979717572603E-9 1.761733518216721E-9 -5.288064000348879E-11
i -4.689871895865515E-15 1.077551466914588E-14 1.673529103110074E-12 5.381338705403388E-11 -5.288064000348879E-11 2.485114962516605E-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 15.7   n/a MPO337987  

100745 (1998 ET3)          Discovered 1998-Mar-02 by Kobayashi, T. at Oizumi
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 ET3 = 2000 YX98 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-11 08:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin