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183966 (2004 ER1)
Classification: Main-belt Asteroid          SPK-ID: 2183966
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .134929003394936 3.8869e-08  
a 2.358842766841243 1.2024e-08 au
q 2.040566463146001 9.514e-08 au
i 6.127218252145398 4.5472e-06 deg
node 176.4239241606008 3.9955e-05 deg
peri 117.084836351429 4.4833e-05 deg
M 61.18551907701692 1.8318e-05 deg
tp 2458775.598130990140
(2019-Oct-19.09813099)
6.7537e-05 TDB
period 1323.265276897229
3.62
1.0118e-05
2.77e-08
d
yr
n .2720542934853714 2.0801e-09 deg/d
Q 2.677119070536485 1.3646e-08 au
  Orbit Determination Parameters
   # obs. used (total)      576  
   data-arc span      6987 days (19.13 yr)  
   first obs. used      2001-06-15  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57452  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 13:39:49  

Additional Information
 Earth MOID = 1.03353 au 
 Jupiter MOID = 2.51022 au 
 T_jup = 3.533 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457255.5 (2015-Aug-21.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1346593522647989 3.8858e-08  
q 2.041343205465695 9.5146e-08 au
tp 2457453.220801007740
(2016-Mar-05.72080101)
6.9938e-05 TDB
node 176.466678210782 3.9947e-05 deg
peri 117.408352860928 4.4855e-05 deg
i 6.127484718153601 4.5479e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      576  
   data-arc span      6987 days (19.13 yr)  
   first obs. used      2001-06-15  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57452  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 13:39:49  

Additional Information
 Jupiter MOID = 2.51022 au 
 T_jup = 3.533 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.509971457372771E-15 -3.676699028738993E-15 2.601431302248573E-13 8.399595564900508E-15 1.216076015919418E-13 -2.949656107205459E-15
q -3.676699028738993E-15 9.052750301595284E-15 -8.175982483092294E-13 -1.950837888727797E-14 -3.534893062911135E-13 7.369622468746697E-15
tp 2.601431302248573E-13 -8.175982483092294E-13 4.89126256985974E-9 -2.248062820782274E-12 1.440103678539388E-9 6.996414380990611E-12
node 8.399595564900508E-15 -1.950837888727797E-14 -2.248062820782274E-12 1.595762292025555E-9 -1.586472559500697E-9 2.359490425774666E-11
peri 1.216076015919418E-13 -3.534893062911135E-13 1.440103678539388E-9 -1.586472559500697E-9 2.011944661027296E-9 -2.157927927813448E-11
i -2.949656107205459E-15 7.369622468746697E-15 6.996414380990611E-12 2.359490425774666E-11 -2.157927927813448E-11 2.068350051141772E-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 16.2   n/a MPO494018  

183966 (2004 ER1)          Discovered 2004-Mar-11 by NEAT at Palomar
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 2004 ER1 = 2001 LK10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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