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

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2258200859824277 2.8934e-08  
a 2.381027197809714 7.7938e-09 au
q 1.843343431273825 7.0925e-08 au
i 4.337602574108825 3.2723e-06 deg
node 292.5030615350191 5.4018e-05 deg
peri 358.8425766578665 5.4713e-05 deg
M 56.94497963903937 9.9278e-06 deg
tp 2459184.225462904804
(2020-Nov-30.72546290)
3.6589e-05 TDB
period 1341.976656040114
3.67
6.589e-06
1.804e-08
d
yr
n .2682610002041936 1.3171e-09 deg/d
Q 2.918710964345602 9.5538e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1424  
   data-arc span      10636 days (29.12 yr)  
   first obs. used      1991-07-10  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50428  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:30:11  

Additional Information
 Earth MOID = .826749 au 
 Jupiter MOID = 2.27368 au 
 T_jup = 3.500 
[ 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 14.96   n/a E2021B10  
diameter diameter 6.619 km 1.332 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.054   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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