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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1349290163904856 3.9668e-08  
a 2.35884276011035 1.2198e-08 au
q 2.040566426668843 9.7315e-08 au
i 6.127217520880025 4.5548e-06 deg
node 176.4239297160249 4.0177e-05 deg
peri 117.0848087038485 4.5122e-05 deg
M 61.18553832979417 1.8388e-05 deg
tp 2458775.598061184624
(2019-Oct-19.09806118)
6.7818e-05 TDB
period 1323.265271233377
3.62
1.0264e-05
2.81e-08
d
yr
n .2720542946498206 2.1103e-09 deg/d
Q 2.677119093551859 1.3844e-08 au
  Orbit Determination Parameters
   # obs. used (total)      573  
   data-arc span      6644 days (18.19 yr)  
   first obs. used      2001-06-15  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57941  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:50:50  

Additional Information
 Earth MOID = 1.03353 au 
 Jupiter MOID = 2.51022 au 
 T_jup = 3.533 
[ 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 16.2   n/a MPO494018  

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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2025-Jun-30 19:59 < 00:01 Eunom 0.0234343790648606 0.0234302367840004 0.023438521345815 6.5411884326469 6.54118834107046 2460857.332967724 0.396612027858135 206.499170188723 49.8029827283803 -0.756427230084529 16993.759208201 T 14 CATAB v2.0f-lin.ifort 2019-Sep-24 03:50:55 2019-Sep-24 03:50
2098-Apr-01 18:28 < 00:01 Juno 0.0474326361433733 0.0474148213374199 0.0474504550938572 6.67825153311483 6.67825149470822 2487430.269500580 0.344485217612044 1130.90018894092 53.6722074283195 38.3017089191541 82059.0045720067 T 14 CATAB v2.0f-lin.ifort 2019-Sep-24 03:50:55 2019-Sep-24 03:50

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