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66437 (1999 NK54)
Classification: Main-belt Asteroid          SPK-ID: 2066437
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2261543235569189 3.3412e-08  
a 2.613530608666925 1.1704e-08 au
q 2.022469361768554 8.5116e-08 au
i 12.11755804755699 3.5442e-06 deg
node 226.8913995397432 2.3739e-05 deg
peri 26.3415314417217 2.6075e-05 deg
M 63.96231182901699 1.1104e-05 deg
tp 2458926.303779278885
(2020-Mar-17.80377928)
4.7206e-05 TDB
period 1543.262534404213
4.23
1.0366e-05
2.838e-08
d
yr
n .2332720402228779 1.5669e-09 deg/d
Q 3.204591855565296 1.435e-08 au
  Orbit Determination Parameters
   # obs. used (total)      779  
   data-arc span      7801 days (21.36 yr)  
   first obs. used      1999-07-12  
   last obs. used      2020-11-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53924  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:22:11  

Additional Information
 Earth MOID = 1.01453 au 
 Jupiter MOID = 1.85061 au 
 T_jup = 3.341 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.05   n/a E2021B10  

66437 (1999 NK54)          Discovered 1999-Jul-12 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 NK54 = 1999 RA222 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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