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JPL Small-Body Database Browser
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17990 (1999 JK64)
Classification: Main-belt Asteroid          SPK-ID: 2017990
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1535212653307605 4.0663e-08  
a 2.733367481482689 1.3754e-08 au
q 2.313737447111512 1.0903e-07 au
i 8.388121843594121 4.4089e-06 deg
node 69.76776134709705 2.7591e-05 deg
peri 178.1430537736065 3.0423e-05 deg
M 149.0629659281956 1.3138e-05 deg
tp 2457917.040602554294
(2017-Jun-12.54060255)
5.9519e-05 TDB
period 1650.613762770396
4.52
1.2459e-05
3.411e-08
d
yr
n .2181006896463621 1.6462e-09 deg/d
Q 3.152997515853865 1.5866e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2136  
   data-arc span      14947 days (40.92 yr)  
   first obs. used      1978-11-30  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45088  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 23:47:08  

Additional Information
 Earth MOID = 1.29977 au 
 Jupiter MOID = 1.87727 au 
 T_jup = 3.321 
[ 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 13.6   n/a MPO365468  

17990 (1999 JK64)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JK64 = 1978 WV18 = 1991 SP4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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