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17355 (1978 NK)
Classification: Main-belt Asteroid          SPK-ID: 2017355
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2353087317480037 5.4427e-08  
a 2.664238331594471 1.3968e-08 au
q 2.037319788712559 1.4763e-07 au
i 3.111664539831255 3.8445e-06 deg
node 255.8872224957505 0.0001116 deg
peri 103.2025716972134 0.00011187 deg
M 229.9435058893821 1.2136e-05 deg
tp 2459774.335718391257
(2022-Jul-13.83571839)
5.6916e-05 TDB
period 1588.393259664125
4.35
1.2491e-05
3.42e-08
d
yr
n .226644124689955 1.7823e-09 deg/d
Q 3.291156874476383 1.7255e-08 au
  Orbit Determination Parameters
   # obs. used (total)      832  
   data-arc span      15594 days (42.69 yr)  
   first obs. used      1978-07-10  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53621  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:32:30  

Additional Information
 Earth MOID = 1.035 au 
 Jupiter MOID = 2.18485 au 
 T_jup = 3.342 
[ 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 15.09   n/a E2021B10  
diameter diameter 5.482 km 0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17355 (1978 NK)          Discovered 1978-Jul-10 by Helin, E. F., Shoemaker, E. M. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1978 NK = 1987 SB30 = 1991 NC7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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