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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2353087189001064 5.6349e-08  
a 2.664238330257675 1.405e-08 au
q 2.037319821920183 1.5238e-07 au
i 3.111664821893166 3.8682e-06 deg
node 255.8872408656903 0.00011513 deg
peri 103.2025546309526 0.0001154 deg
M 229.9435058594189 1.2136e-05 deg
tp 2459774.335718091572
(2022-Jul-13.83571809)
5.6917e-05 TDB
period 1588.393258468647
4.35
1.2565e-05
3.44e-08
d
yr
n .226644124860535 1.7929e-09 deg/d
Q 3.291156838595167 1.7357e-08 au
  Orbit Determination Parameters
   # obs. used (total)      828  
   data-arc span      15557 days (42.59 yr)  
   first obs. used      1978-07-10  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53569  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:01:54  

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 | Close-Approach Data ]

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

[ show close-approach data ]
Alternate Designations
 1978 NK = 1987 SB30 = 1991 NC7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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