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180544 (2004 ET15)
Classification: Main-belt Asteroid          SPK-ID: 2180544
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1511116103751466 5.2315e-08  
a 2.446330372904576 1.6495e-08 au
q 2.076661450745332 1.3188e-07 au
i 1.597534571780318 6.3527e-06 deg
node 258.6521968973425 0.0002041 deg
peri 272.726705144873 0.00020535 deg
M 132.7915199220097 2.5015e-05 deg
tp 2458684.987822073359
(2019-Jul-20.48782207)
9.4402e-05 TDB
period 1397.56201422039
3.83
1.4135e-05
3.87e-08
d
yr
n .2575914316051449 2.6053e-09 deg/d
Q 2.815999295063819 1.8988e-08 au
  Orbit Determination Parameters
   # obs. used (total)      199  
   data-arc span      6948 days (19.02 yr)  
   first obs. used      1999-12-31  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53395  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 18:19:03  

Additional Information
 Earth MOID = 1.08268 au 
 Jupiter MOID = 2.1565 au 
 T_jup = 3.482 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO320837  

180544 (2004 ET15)          Discovered 2004-Mar-12 by NEAT at Palomar
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

Alternate Designations
 2004 ET15 = 2004 DD78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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