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 ]  
52685 (1998 EZ9)
Classification: Main-belt Asteroid          SPK-ID: 2052685
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1593303949106238 4.3995e-08  
a 3.171212708457628 2.2146e-08 au
q 2.665942135273485 1.408e-07 au
i 10.28428945526594 5.1791e-06 deg
node 12.37177208357847 2.3762e-05 deg
peri 216.5226311089998 2.8002e-05 deg
M 12.87414108317 1.4998e-05 deg
tp 2459322.734676726608
(2021-Apr-18.23467673)
8.5779e-05 TDB
period 2062.701985854152
5.65
2.1607e-05
5.916e-08
d
yr
n .1745283625404211 1.8282e-09 deg/d
Q 3.676483281641771 2.5675e-08 au
  Orbit Determination Parameters
   # obs. used (total)      806  
   data-arc span      8506 days (23.29 yr)  
   first obs. used      1998-02-27  
   last obs. used      2021-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49964  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:09:11  

Additional Information
 Earth MOID = 1.66575 au 
 Jupiter MOID = 1.36135 au 
 T_jup = 3.157 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457408.5 (2016-Jan-21.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1596616385764157 4.4022e-08  
q 2.665397860384544 1.4092e-07 au
tp 2457254.862853070117
(2015-Aug-20.36285307)
8.3672e-05 TDB
node 12.40735400024011 2.3758e-05 deg
peri 215.9452082811189 2.7972e-05 deg
i 10.28526563792847 5.1792e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      806  
   data-arc span      8506 days (23.29 yr)  
   first obs. used      1998-02-27  
   last obs. used      2021-06-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49964  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:09:11  

Additional Information
 Jupiter MOID = 1.36135 au 
 T_jup = 3.157 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.937907298763909E-15 -6.149256540095144E-15 -9.340652760719931E-13 -2.036868221018479E-15 -1.008600997855945E-13 1.107892627941971E-15
q -6.149256540095144E-15 1.985826036136885E-14 2.890522170160341E-12 1.641564098407108E-14 2.983424617299763E-13 -4.810917936115484E-15
tp -9.340652760719931E-13 2.890522170160341E-12 7.001070858328016E-9 -7.253889708597965E-12 1.25402499224817E-9 5.144138055795556E-12
node -2.036868221018479E-15 1.641564098407108E-14 -7.253889708597965E-12 5.644468193192738E-10 -5.55786895582041E-10 -1.184188823821709E-11
peri -1.008600997855945E-13 2.983424617299763E-13 1.25402499224817E-9 -5.55786895582041E-10 7.82455399036511E-10 1.25677508154719E-11
i 1.107892627941971E-15 -4.810917936115484E-15 5.144138055795556E-12 -1.184188823821709E-11 1.25677508154719E-11 2.682409409470637E-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 14.44   n/a MPO614063  
diameter diameter 8.737 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.021   0.001 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52685 (1998 EZ9)          Discovered 1998-Mar-11 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 EZ9 = 2000 SN202 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-31 03:35 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin