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20471 (1999 NK6)
Classification: Main-belt Asteroid          SPK-ID: 2020471
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1838170538762624 1.4698e-08  
a 2.696863196005377 1.2774e-08 au
q 2.201133748608347 4.3431e-08 au
i 10.6735218138933 6.4965e-07 deg
node 293.8377120508457 4.9101e-06 deg
peri 104.940350066534 6.894e-06 deg
M 226.9534549891882 8.6204e-06 deg
tp 2459798.344037228002
(2022-Aug-06.84403723)
4.1172e-05 TDB
period 1617.658341932824
4.43
1.1494e-05
3.147e-08
d
yr
n .2225439022988388 1.5812e-09 deg/d
Q 3.192592643402407 1.5123e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1631  
   data-arc span      13285 days (36.37 yr)  
   first obs. used      1984-03-07  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42918  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:21:57  

Additional Information
 Earth MOID = 1.2371 au 
 Jupiter MOID = 2.30862 au 
 T_jup = 3.320 
[ 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 13.66   n/a E2021B10  
diameter diameter 5.290 km 0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.2122 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.191   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20471 (1999 NK6)          Discovered 1999-Jul-13 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 NK6 = 1986 UF3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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