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312539 (2009 ES20)
Classification: Main-belt Asteroid          SPK-ID: 2312539
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1260380489121294 4.4414e-08  
a 2.288566039598155 1.3618e-08 au
q 2.000119641160645 1.02e-07 au
i 3.18880835418243 6.123e-06 deg
node 2.431352497467895 8.7172e-05 deg
peri 111.0731770139108 9.0617e-05 deg
M 139.1509349174688 2.4197e-05 deg
tp 2458511.704467009632
(2019-Jan-28.20446701)
8.3942e-05 TDB
period 1264.572113589456
3.46
1.1287e-05
3.09e-08
d
yr
n .2846812737141175 2.5409e-09 deg/d
Q 2.577012438035666 1.5334e-08 au
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      8745 days (23.94 yr)  
   first obs. used      1995-01-29  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5248  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:02:51  

Additional Information
 Earth MOID = 1.01918 au 
 Jupiter MOID = 2.50569 au 
 T_jup = 3.587 
[ 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 17.8   n/a MPO418615  

312539 (2009 ES20)          Discovered 2009-Mar-15 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ 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
2082-Aug-08 03:42 00:02 Thisb 0.0483581785050478 0.0483505188459586 0.0483658488822046 5.04669320099446 5.04669317305629 2481714.653959212 2.32300811888977 1222.66762820574 81.1998162231037 72.1762553152471 84804.7604935149 T 10 CATAB v2.0e-lin.ifort 2019-Jul-14 12:02:53 2019-Jul-14 12:02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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