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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2265567450182906 6.4905e-08  
a 2.380625537864321 1.5223e-08 AU
q 1.841278764898364 1.5561e-07 AU
i 4.344264134774478 6.9021e-06 deg
node 292.606802287901 8.2779e-05 deg
peri 358.6468424847237 8.3675e-05 deg
M 134.6163584453487 1.5227e-05 deg
tp 2456498.815831409083
(2013-Jul-25.31583141)
5.4354e-05 JED
period 1341.637099521247
3.67
1.2869e-05
3.523e-08
d
yr
n .2683288946977265 2.5737e-09 deg/d
Q 2.919972310830279 1.8672e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      603  
   data-arc span      8564 days (23.45 yr)  
   first obs. used      1991-07-10  
   last obs. used      2014-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56107  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:48:52  

Additional Information
 Earth MOID = .826305 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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