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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2254780283114073 6.3995e-08  
a 2.382544887545267 1.5082e-08 au
q 1.845333363938137 1.5354e-07 au
i 4.339049502029717 6.8331e-06 deg
node 292.5863277467844 7.9843e-05 deg
peri 358.6767103429375 8.0748e-05 deg
M 241.8454607374481 1.5837e-05 deg
tp 2457841.367388250670
(2017-Mar-28.86738825)
6.1696e-05 JED
period 1343.259943806015
3.68
1.2755e-05
3.492e-08
d
yr
n .2680047161832057 2.5448e-09 deg/d
Q 2.919756411152397 1.8482e-08 au
  Orbit Determination Parameters
   # obs. used (total)      669  
   data-arc span      8927 days (24.44 yr)  
   first obs. used      1991-07-10  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54433  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:47:00  

Additional Information
 Earth MOID = .827355 au 
 Jupiter MOID = 2.26401 au 
 T_jup = 3.499 
[ 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 14.9 mag n/a MPO337436  

21066 (1991 NG5)          Discovered 1991-Jul-10 by Debehogne, H. at La Silla
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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