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JPL Small-Body Database Browser
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172865 (2005 EC97)
Classification: Main-belt Asteroid          SPK-ID: 2172865
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0808534912028147 6.6033e-08  
a 2.784659474824936 3.0445e-08 au
q 2.559510034474343 1.8864e-07 au
i 6.720424849239139 6.1516e-06 deg
node 302.2625982885886 5.5186e-05 deg
peri 254.6166856899285 6.748e-05 deg
M 65.67043705781035 3.785e-05 deg
tp 2458690.883587192571
(2019-Jul-26.38358719)
0.0001791 TDB
period 1697.292017602279
4.65
2.7835e-05
7.621e-08
d
yr
n .2121025706045344 3.4784e-09 deg/d
Q 3.009808915175528 3.2907e-08 au
  Orbit Determination Parameters
   # obs. used (total)      303  
   data-arc span      6996 days (19.15 yr)  
   first obs. used      2000-02-07  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5783  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 13:01:06  

Additional Information
 Earth MOID = 1.5685 au 
 Jupiter MOID = 2.01187 au 
 T_jup = 3.317 
[ 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 15.7   n/a MPO469852  

172865 (2005 EC97)          Discovered 2005-Mar-03 by CSS at Catalina
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ 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
1981-Feb-12 06:13 < 00:01 Inter 0.0371195836503571 0.0371104735205588 0.0371286958628915 5.14561976831441 5.14561969167045 2444647.758980023 0.826914586355563 636.744198173244 86.5285615249899 -45.0398278003333 45800.9198824105 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 13:01:10 2019-Dec-14 13:01
2001-Dec-13 20:21 00:01 Eunom 0.00856872545020965 0.00856684982624032 0.0085706012712042 5.05309364738072 5.05309332317526 2452257.348168358 1.00404595298397 250.590099587108 89.7765001515874 -83.6106628458761 14190.5493681667 T 16 CATAB v2.0f-lin.ifort 2019-Dec-14 13:01:10 2019-Dec-14 13:01
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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