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 ]  
227894 (2007 EX91)
Classification: Main-belt Asteroid          SPK-ID: 2227894
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1433052052822647 5.3645e-08  
a 2.331898864481539 1.4641e-08 au
q 1.997725619009532 1.2167e-07 au
i 5.76084842732832 6.3604e-06 deg
node 318.2999488911684 5.9422e-05 deg
peri 83.69355048469889 6.3991e-05 deg
M 52.46409771348993 2.2717e-05 deg
tp 2459010.950474884072
(2020-Jun-10.45047488)
8.1762e-05 TDB
period 1300.657630945751
3.56
1.225e-05
3.354e-08
d
yr
n .2767830606877169 2.6068e-09 deg/d
Q 2.666072109953546 1.6739e-08 au
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      7622 days (20.87 yr)  
   first obs. used      2000-05-05  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52874  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:51:02  

Additional Information
 Earth MOID = 1.01475 au 
 Jupiter MOID = 2.73492 au 
 T_jup = 3.550 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457516.5 (2016-May-08.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1440457830505283 5.3837e-08  
q 1.995834982065751 1.2218e-07 au
tp 2457708.156187523926
(2016-Nov-15.65618752)
7.9691e-05 TDB
node 318.439083868532 5.9479e-05 deg
peri 83.01423737214199 6.3964e-05 deg
i 5.758814044398878 6.3554e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      7622 days (20.87 yr)  
   first obs. used      2000-05-05  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52874  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:51:02  

Additional Information
 Jupiter MOID = 2.73492 au 
 T_jup = 3.550 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.898421467562719E-15 -6.546941382367243E-15 4.230913049726815E-13 2.589222318239355E-14 2.398937128698233E-14 -7.026547655906166E-15
q -6.546941382367243E-15 1.492913188636682E-14 -9.533737962971704E-13 -5.999269271844266E-14 -5.615518080512558E-14 1.612509732268478E-14
tp 4.230913049726815E-13 -9.533737962971704E-13 6.350694539207306E-9 -1.510346479524945E-11 1.902009642887501E-9 -5.937948009928114E-13
node 2.589222318239355E-14 -5.999269271844266E-14 -1.510346479524945E-11 3.537769746838702E-9 -3.523867711526789E-9 -9.00517560035303E-11
peri 2.398937128698233E-14 -5.615518080512558E-14 1.902009642887501E-9 -3.523867711526789E-9 4.091333814087551E-9 8.950177703700155E-11
i -7.026547655906166E-15 1.612509732268478E-14 -5.937948009928114E-13 -9.00517560035303E-11 8.950177703700155E-11 4.039088460661503E-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 17.03   n/a MPCxxxxx  

227894 (2007 EX91)          Discovered 2007-Mar-10 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-15 09:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin