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21066 (1991 NG5)
Classification: Main-belt Asteroid          SPK-ID: 2021066
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2267121664615765 6.5132e-08  
a 2.380416413665597 1.5484e-08 AU
q 1.840747051442773 1.5634e-07 AU
i 4.344342850708591 6.955e-06 deg
node 292.6057149747701 8.4721e-05 deg
peri 358.6360654780455 8.5625e-05 deg
M 80.94540493354174 1.5008e-05 deg
tp 2456498.874864251028
(2013-Jul-25.37486425)
5.4573e-05 JED
period 1341.460320802412
3.67
1.3089e-05
3.584e-08
d
yr
n .2683642552950513 2.6184e-09 deg/d
Q 2.92008577588842 1.8994e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      595  
   data-arc span      8035 days (22.00 yr)  
   first obs. used      1991-07-10  
   last obs. used      2013-07-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56456  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:53:46  

Additional Information
 Earth MOID = .823845 AU 
 T_jup = 3.500 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8 mag n/a MPO266066  

21066 (1991 NG5)          Discovered 1991-Jul-10 by Debehogne, H. at La Silla (809)
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 NG5 = 1998 FQ117 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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