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175009 (2004 EL81)
Classification: Main-belt Asteroid          SPK-ID: 2175009
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1431795829104681 5.0373e-08  
a 2.809163816487116 1.97e-08 au
q 2.406948912915313 1.4196e-07 au
i 10.52351564375568 4.0801e-06 deg
node 94.23884974920651 3.0326e-05 deg
peri 103.4021883631203 3.452e-05 deg
M 188.287243778782 1.9347e-05 deg
tp 2460020.783704632528
(2023-Mar-17.28370463)
9.7367e-05 TDB
period 1719.744881896086
4.71
1.8091e-05
4.953e-08
d
yr
n .2093333748451607 2.202e-09 deg/d
Q 3.21137872005892 2.2521e-08 au
  Orbit Determination Parameters
   # obs. used (total)      524  
   data-arc span      6643 days (18.19 yr)  
   first obs. used      2002-12-05  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53672  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:03:39  

Additional Information
 Earth MOID = 1.43007 au 
 Jupiter MOID = 1.84953 au 
 T_jup = 3.282 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457724.5 (2016-Dec-02.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1419991148381978 5.0591e-08  
q 2.411807100320908 1.4247e-07 au
tp 2458302.804409242329
(2018-Jul-03.30440924)
8.8288e-05 TDB
node 94.25884091874457 3.0348e-05 deg
peri 103.8796228348425 3.4595e-05 deg
i 10.5176266637474 4.0771e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      524  
   data-arc span      6643 days (18.19 yr)  
   first obs. used      2002-12-05  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53672  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:03:39  

Additional Information
 Jupiter MOID = 1.84953 au 
 T_jup = 3.282 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.559439400093604E-15 -7.156584031050483E-15 -1.304456992367881E-12 2.72064650405083E-14 -2.493792919724594E-13 1.574484709274636E-15
q -7.156584031050483E-15 2.029770133877437E-14 4.334844728650886E-12 -7.424070335413048E-14 8.012759342189534E-13 -3.391492433101258E-15
tp -1.304456992367881E-12 4.334844728650886E-12 7.794717597993509E-9 -3.720066508927102E-11 1.511144196105467E-9 2.443643231677645E-12
node 2.72064650405083E-14 -7.424070335413048E-14 -3.720066508927102E-11 9.210054346205113E-10 -9.123749524561674E-10 7.31124391458108E-12
peri -2.493792919724594E-13 8.012759342189534E-13 1.511144196105467E-9 -9.123749524561674E-10 1.196834633584454E-9 -6.740205689893167E-12
i 1.574484709274636E-15 -3.391492433101258E-15 2.443643231677645E-12 7.31124391458108E-12 -6.740205689893167E-12 1.662237538952839E-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 15.29   n/a MPCxxxxx  

175009 (2004 EL81)          Discovered 2004-Mar-15 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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