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175139 (2005 EM9)
Classification: Main-belt Asteroid          SPK-ID: 2175139
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .117899747614192 4.97e-08  
a 2.335133214614868 1.2162e-08 au
q 2.059821597966258 1.1818e-07 au
i 2.425297029738809 4.5118e-06 deg
node 222.9254421878454 0.0001209 deg
peri 318.4951816461469 0.00012264 deg
M 139.6944407635917 2.0953e-05 deg
tp 2458694.742255901872
(2019-Jul-30.24225590)
7.475e-05 TDB
period 1303.364592607176
3.57
1.0183e-05
2.788e-08
d
yr
n .2762082091549508 2.1579e-09 deg/d
Q 2.610444831263478 1.3596e-08 au
  Orbit Determination Parameters
   # obs. used (total)      250  
   data-arc span      7621 days (20.87 yr)  
   first obs. used      1998-03-29  
   last obs. used      2019-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61976  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:04:11  

Additional Information
 Earth MOID = 1.06261 au 
 Jupiter MOID = 2.35221 au 
 T_jup = 3.558 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456953.5 (2014-Oct-23.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1177076584843526 4.9515e-08  
q 2.059468980723985 1.1746e-07 au
tp 2457390.934356679858
(2016-Jan-03.43435668)
7.2907e-05 TDB
node 223.0624684039905 0.00012088 deg
peri 318.2547485280974 0.00012263 deg
i 2.425532138629507 4.5128e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      250  
   data-arc span      7621 days (20.87 yr)  
   first obs. used      1998-03-29  
   last obs. used      2019-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61976  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:04:11  

Additional Information
 Jupiter MOID = 2.35221 au 
 T_jup = 3.558 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.451700452956097E-15 -5.793179005679383E-15 -4.813886002494208E-13 1.805440805548431E-14 -5.114243615924769E-14 -1.702771798141533E-15
q -5.793179005679383E-15 1.379755679488351E-14 1.229532312887048E-12 -4.353256211896223E-14 1.36260643559262E-13 4.198913868938842E-15
tp -4.813886002494208E-13 1.229532312887048E-12 5.315483072942832E-9 -3.99966570842389E-11 1.528535609753637E-9 3.479182945885269E-12
node 1.805440805548431E-14 -4.353256211896223E-14 -3.99966570842389E-11 1.461085015996232E-8 -1.460715298919E-8 -3.488752475038475E-11
peri -5.114243615924769E-14 1.36260643559262E-13 1.528535609753637E-9 -1.460715298919E-8 1.503781070017142E-8 3.575705200893197E-11
i -1.702771798141533E-15 4.198913868938842E-15 3.479182945885269E-12 -3.488752475038475E-11 3.575705200893197E-11 2.03650515552583E-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 17.41   n/a MPCxxxxx  

175139 (2005 EM9)          Discovered 2005-Mar-02 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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