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172847 (2005 EC15)
Classification: Main-belt Asteroid          SPK-ID: 2172847
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07872086029675482 6.3291e-08  
a 2.286021934176021 1.0719e-08 au
q 2.106064320860433 1.4474e-07 au
i 3.607619338235412 5.732e-06 deg
node 149.7027693427349 9.0444e-05 deg
peri 14.80609881157127 9.6897e-05 deg
M 147.5175306183956 3.457e-05 deg
tp 2458483.178950923135
(2018-Dec-30.67895092)
0.00012081 TDB
period 1262.46403994813
3.46
8.8797e-06
2.431e-08
d
yr
n .2851566370276901 2.0057e-09 deg/d
Q 2.465979547491609 1.1563e-08 au
  Orbit Determination Parameters
   # obs. used (total)      393  
   data-arc span      6206 days (16.99 yr)  
   first obs. used      2002-06-02  
   last obs. used      2019-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55722  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:55:05  

Additional Information
 Earth MOID = 1.1137 au 
 Jupiter MOID = 2.502 au 
 T_jup = 3.595 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457034.5 (2015-Jan-12.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07866205629184489 6.3023e-08  
q 2.106044155925815 1.44e-07 au
tp 2457219.859899661813
(2015-Jul-16.35989966)
0.00012067 TDB
node 149.7565511448102 9.055e-05 deg
peri 14.5349861873107 9.7083e-05 deg
i 3.605266794526468 5.7288e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      393  
   data-arc span      6206 days (16.99 yr)  
   first obs. used      2002-06-02  
   last obs. used      2019-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55722  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:55:05  

Additional Information
 Jupiter MOID = 2.502 au 
 T_jup = 3.595 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.971916581340646E-15 -9.054189033070942E-15 4.569532171219641E-12 5.639266161506059E-14 1.337856148574939E-12 1.137039194010307E-15
q -9.054189033070942E-15 2.073463949070999E-14 -1.03869823441134E-11 -1.279931092776832E-13 -3.045697404669276E-12 -2.393018486176789E-15
tp 4.569532171219641E-12 -1.03869823441134E-11 1.456199239897344E-8 1.132950953862052E-10 4.262810136240557E-9 5.013452329014906E-12
node 5.639266161506059E-14 -1.279931092776832E-13 1.132950953862052E-10 8.199260308510153E-9 -8.148517334374927E-9 2.867415812609187E-10
peri 1.337856148574939E-12 -3.045697404669276E-12 4.262810136240557E-9 -8.148517334374927E-9 9.425103610714987E-9 -2.846987168035748E-10
i 1.137039194010307E-15 -2.393018486176789E-15 5.013452329014906E-12 2.867415812609187E-10 -2.846987168035748E-10 3.281931143585954E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO427054  

172847 (2005 EC15)          Discovered 2005-Mar-03 by Spacewatch at Kitt Peak
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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