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175004 (2004 ER71)
Classification: Main-belt Asteroid          SPK-ID: 2175004
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0593660934905994 4.426e-08  
a 2.751072839444175 1.7033e-08 au
q 2.587752392058283 1.2266e-07 au
i 6.064317183170876 4.896e-06 deg
node 354.0133937413328 3.8608e-05 deg
peri 40.17019974133055 5.6347e-05 deg
M 20.35010351878824 3.8347e-05 deg
tp 2459106.285947952496
(2020-Sep-13.78594795)
0.00017771 TDB
period 1666.677454774991
4.56
1.5478e-05
4.238e-08
d
yr
n .2159986018702111 2.006e-09 deg/d
Q 2.914393286830066 1.8044e-08 au
  Orbit Determination Parameters
   # obs. used (total)      464  
   data-arc span      7101 days (19.44 yr)  
   first obs. used      2001-08-23  
   last obs. used      2021-01-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56388  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:03:38  

Additional Information
 Earth MOID = 1.59504 au 
 Jupiter MOID = 2.34015 au 
 T_jup = 3.335 
[ show covariance matrix ]

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 15.95   n/a E2021B55  

175004 (2004 ER71)          Discovered 2004-Mar-15 by CSS at Catalina
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 2004 ER71 = 2002 XX111 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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