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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 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1906-Nov-01 12:21 00:04 Jupiter 1.89214370851852 1.89214110029199 1.89214631674258 1.90107688772779 1.64887498112229 2417516.014561098 3.94207963997185 183.376496438162 45.8208910242388 73.7276218432153 1183187.66588324 T 27 CATAB v2.0g-lin.ifort 2021-Jul-08 08:09:15 2021-Jul-08 08:09
1917-Apr-10 20:19 00:03 Jupiter 1.41038133061974 1.41037991087473 1.41038275052292 2.23319845136051 1.94577742659738 2421329.346663216 2.86888637089939 974.904708949828 40.0995280340682 -83.2723601459215 1819094.76482415 T 27 CATAB v2.0g-lin.ifort 2021-Jul-08 08:09:15 2021-Jul-08 08:09
1927-Dec-25 03:29 00:02 Jupiter 1.44928890440887 1.44928743102114 1.44929037829065 2.83504606508753 2.62080255797233 2425239.645379622 2.37028269871008 1491.6618145986 30.3590681270557 87.861307602735 2284632.93372526 T 27 CATAB v2.0g-lin.ifort 2021-Jul-08 08:09:15 2021-Jul-08 08:09
2013-Jul-12 14:42 < 00:01 Jupiter 1.82304447378337 1.82304378537783 1.82304516218891 1.59962947282619 1.27654804164662 2456486.112600842 0.376725047049102 95.432814465652 79.2936594549334 75.1353492035719 1827432.96631602 T 27 CATAB v2.0g-lin.ifort 2021-Jul-08 08:09:15 2021-Jul-08 08:09
2023-Dec-25 02:18 < 00:01 Jupiter 1.39462356680387 1.39462299673773 1.39462413687285 2.18413406275385 1.88566821925212 2460303.595944900 0.486921527143851 578.827655468597 31.1487100634386 -85.9147758979053 1848133.64456561 T 27 CATAB v2.0g-lin.ifort 2021-Jul-08 08:09:15 2021-Jul-08 08:09
2034-Sep-04 08:40 < 00:01 Jupiter 1.50475395757054 1.50475313494453 1.50475478058685 2.91377857182662 2.71372625855608 2464209.861089283 0.871280678006654 1695.87492950051 14.2529592943481 88.836652339428 1847921.31284606 T 27 CATAB v2.0g-lin.ifort 2021-Jul-08 08:09:15 2021-Jul-08 08:09
2120-Apr-02 15:57 00:04 Jupiter 1.76325206029915 1.76324954327809 1.76325457735249 1.35433393406295 0.934596202460051 2495466.164392724 3.9914652178086 1053.45037271807 156.775434081165 36.7518477923312 1331583.84885295 T 27 CATAB v2.0g-lin.ifort 2021-Jul-08 08:09:15 2021-Jul-08 08:09
2130-Sep-21 13:05 00:04 Jupiter 1.39097256581696 1.39097150233658 1.390973629483 2.10770126059672 1.79569466143736 2499290.045272687 3.58586342804449 1183.74004828942 49.3935075833836 -83.5658136975411 1802459.34360501 T 27 CATAB v2.0g-lin.ifort 2021-Jul-08 08:09:15 2021-Jul-08 08:09
2141-May-28 09:13 00:04 Jupiter 1.55157083092646 1.55156792319118 1.55157373905482 2.99819928148965 2.81022653148369 2503191.883842710 4.11374010512891 1411.48970724227 40.995145534815 85.3224487581611 1153512.0101813 T 27 CATAB v2.0g-lin.ifort 2021-Jul-08 08:09:15 2021-Jul-08 08:09

Alternate Designations
 1998 EZ9 = 2000 SN202 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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