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187657 (2007 ER148)
Classification: Jupiter Trojan          SPK-ID: 2187657
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0321683745857268 7.6655e-08  
a 5.247754820495563 1.2028e-07 au
q 5.078943077695808 4.3789e-07 au
i 9.523630770663225 6.0435e-06 deg
node 150.193358387075 4.753e-05 deg
peri 106.1377101453153 0.00013731 deg
M 337.4112350308633 0.00012925 deg
tp 2459476.017200622047
(2021-Sep-18.51720062)
0.0015741 TDB
period 4390.952420792206
12.02
0.00015097
4.133e-07
d
yr
n .0819867685869959 2.8188e-09 deg/d
Q 5.416566563295317 1.2415e-07 au
  Orbit Determination Parameters
   # obs. used (total)      269  
   data-arc span      6801 days (18.62 yr)  
   first obs. used      2001-10-11  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50307  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:51:58  

Additional Information
 Earth MOID = 4.07752 au 
 Jupiter MOID = .129109 au 
 T_jup = 2.971 
[ 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 13.46   n/a E2021B55  

187657 (2007 ER148)          Discovered 2007-Mar-12 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

Alternate Designations
 2007 ER148 = 2006 BL223 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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