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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2350966283814038 5.7747e-08  
a 2.664685162838657 1.4707e-08 au
q 2.038226665357337 1.5571e-07 au
i 3.111492335416364 4.517e-06 deg
node 255.8932815452883 0.00011754 deg
peri 103.1887594166742 0.00011793 deg
M 184.6221307548181 1.2141e-05 deg
tp 2459774.497523373369
(2022-Jul-13.99752337)
5.78e-05 TDB
period 1588.792871151088
4.35
1.3154e-05
3.601e-08
d
yr
n .2265871194016488 1.8759e-09 deg/d
Q 3.291143660319977 1.8165e-08 au
  Orbit Determination Parameters
   # obs. used (total)      761  
   data-arc span      14841 days (40.63 yr)  
   first obs. used      1978-07-10  
   last obs. used      2019-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53806  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 22:18:24  

Additional Information
 Earth MOID = 1.03753 au 
 Jupiter MOID = 2.18395 au 
 T_jup = 3.342 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456240.5 (2012-Nov-09.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2322610507027183 5.7506e-08  
q 2.047727557133271 1.5488e-07 au
tp 2456590.494877915969
(2013-Oct-24.99487792)
4.5343e-05 TDB
node 256.3823852551844 0.00011728 deg
peri 102.0212547258503 0.0001177 deg
i 3.112387218712561 4.5273e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      761  
   data-arc span      14841 days (40.63 yr)  
   first obs. used      1978-07-10  
   last obs. used      2019-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53806  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 22:18:24  

Additional Information
 Jupiter MOID = 2.18395 au 
 T_jup = 3.342 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.306913228748787E-15 -8.8829691337183E-15 -8.908951031566837E-13 4.059281120942318E-15 -3.004584518933306E-13 -2.339354379747508E-15
q -8.8829691337183E-15 2.398744797633044E-14 2.543028875903351E-12 -1.102578258109094E-14 8.29674887069091E-13 6.411453101942583E-15
tp -8.908951031566837E-13 2.543028875903351E-12 2.05597806574206E-9 7.513763837783906E-12 5.027203352095211E-10 6.13478977588595E-13
node 4.059281120942318E-15 -1.102578258109094E-14 7.513763837783906E-12 1.375565108485604E-8 -1.373299007499531E-8 1.021213804603499E-10
peri -3.004584518933306E-13 8.29674887069091E-13 5.027203352095211E-10 -1.373299007499531E-8 1.385411496022524E-8 -1.017538200737641E-10
i -2.339354379747508E-15 6.411453101942583E-15 6.13478977588595E-13 1.021213804603499E-10 -1.017538200737641E-10 2.049628668349988E-11

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 15.1   n/a MPO452416  
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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