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187660 (2007 JE8)
Classification: Main-belt Asteroid          SPK-ID: 2187660
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0877652193594522 4.8973e-08  
a 3.126734219268417 3.1433e-08 au
q 2.852315704635619 1.4337e-07 au
i 4.517548993374986 5.0342e-06 deg
node 223.8150547618517 5.6421e-05 deg
peri 2.72869020765796 6.4038e-05 deg
M 169.5842913353628 3.3986e-05 deg
tp 2458249.198904346866
(2018-May-10.69890435)
0.00018314 TDB
period 2019.458239548126
5.53
3.0452e-05
8.337e-08
d
yr
n .178265632311641 2.6881e-09 deg/d
Q 3.401152733901216 3.4191e-08 au
  Orbit Determination Parameters
   # obs. used (total)      375  
   data-arc span      8084 days (22.13 yr)  
   first obs. used      1998-10-20  
   last obs. used      2020-12-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56213  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:19  

Additional Information
 Earth MOID = 1.84149 au 
 Jupiter MOID = 1.58154 au 
 T_jup = 3.204 
[ 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 15.4   n/a MPO449935  

187660 (2007 JE8)          Discovered 2007-May-09 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 2007 JE8 = 2001 HC68 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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