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85943 (1999 EJ7)
Classification: Main-belt Asteroid          SPK-ID: 2085943
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1878002411557535 4.3075e-08  
a 2.514999672871395 1.4242e-08 au
q 2.042682127799505 1.1185e-07 au
i 3.6555821135311 4.7679e-06 deg
node 320.8854249967323 6.9289e-05 deg
peri 7.067292842350352 7.1044e-05 deg
M 302.1091651038865 1.9115e-05 deg
tp 2459234.767821198061
(2021-Jan-20.26782120)
7.7774e-05 TDB
period 1456.818091890464
3.99
1.2375e-05
3.388e-08
d
yr
n .2471138998094402 2.099e-09 deg/d
Q 2.987317217943284 1.6917e-08 au
  Orbit Determination Parameters
   # obs. used (total)      815  
   data-arc span      8235 days (22.55 yr)  
   first obs. used      1997-12-27  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6048  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:15  

Additional Information
 Earth MOID = 1.03132 au 
 Jupiter MOID = 2.35602 au 
 T_jup = 3.432 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456687.5 (2014-Jan-30.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1858431104439736 4.2804e-08  
q 2.04842783766713 1.1075e-07 au
tp 2456317.907954822887
(2013-Jan-25.40795482)
7.6948e-05 TDB
node 320.9473048733755 6.9321e-05 deg
peri 6.532530478189581 7.1128e-05 deg
i 3.65507689502483 4.7649e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      815  
   data-arc span      8235 days (22.55 yr)  
   first obs. used      1997-12-27  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6048  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:15  

Additional Information
 Jupiter MOID = 2.35602 au 
 T_jup = 3.432 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.832205127762674E-15 -4.715470050731489E-15 5.699526210359235E-13 -3.223552905966452E-15 8.160539169810478E-14 -5.719883653786095E-17
q -4.715470050731489E-15 1.226527217169559E-14 -1.497589368550091E-12 9.063111692017563E-15 -2.105383005873976E-13 3.50010699076229E-16
tp 5.699526210359235E-13 -1.497589368550091E-12 5.92101445420823E-9 5.953477952077626E-12 1.244460595000906E-9 -4.642590179368816E-12
node -3.223552905966452E-15 9.063111692017563E-15 5.953477952077626E-12 4.805436348005953E-9 -4.794235773334702E-9 -2.850302331363316E-11
peri 8.160539169810478E-14 -2.105383005873976E-13 1.244460595000906E-9 -4.794235773334702E-9 5.059218557341124E-9 2.744314258899235E-11
i -5.719883653786095E-17 3.50010699076229E-16 -4.642590179368816E-12 -2.850302331363316E-11 2.744314258899235E-11 2.270443471431311E-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 15.3   n/a MPO436376  

85943 (1999 EJ7)          Discovered 1999-Mar-12 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ 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
2119-Oct-23 02:47 < 00:01 Amphi 0.0071742569063185 0.00715364087454268 0.00719487786689271 3.76792205292208 3.76792184025796 2495303.616012753 0.955721582095995 1069.53369454621 52.4192408539057 16.124945361664 5762.26829999019 T 22 CATAB v2.0f-lin.ifort 2020-Nov-12 20:59:17 2020-Nov-12 20:59

Alternate Designations
 1999 EJ7 = 2001 UR175 = 2001 VP65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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