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JPL Small-Body Database Browser
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91420 (1999 NK60)
Classification: Main-belt Asteroid          SPK-ID: 2091420
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2221691482994418 3.6807e-08  
a 2.761814622436287 1.573e-08 au
q 2.148224620008673 1.0304e-07 au
i 13.66150384699787 3.9643e-06 deg
node 157.2089605145764 1.8413e-05 deg
peri 97.50605306023762 2.0368e-05 deg
M 220.8980131166669 1.0252e-05 deg
tp 2459648.270321663675
(2022-Mar-09.77032166)
5.0749e-05 TDB
period 1676.448489513733
4.59
1.4323e-05
3.921e-08
d
yr
n .214739672737825 1.8346e-09 deg/d
Q 3.375404624863902 1.9225e-08 au
  Orbit Determination Parameters
   # obs. used (total)      689  
   data-arc span      7505 days (20.55 yr)  
   first obs. used      1999-07-13  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55031  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:29:35  

Additional Information
 Earth MOID = 1.18506 au 
 Jupiter MOID = 1.90832 au 
 T_jup = 3.265 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457247.5 (2015-Aug-13.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2233490388668808 3.6641e-08  
q 2.143007247489031 1.0254e-07 au
tp 2457971.813814799245
(2017-Aug-06.31381480)
4.3798e-05 TDB
node 157.2506542552443 1.8404e-05 deg
peri 97.55582958663865 2.0353e-05 deg
i 13.6691447957135 3.9669e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      689  
   data-arc span      7505 days (20.55 yr)  
   first obs. used      1999-07-13  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55031  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:29:35  

Additional Information
 Jupiter MOID = 1.90832 au 
 T_jup = 3.265 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.342565287971992E-15 -3.730868842434041E-15 -2.230201849740741E-13 9.657679898558696E-15 -4.122587331216577E-14 -1.668965604139953E-15
q -3.730868842434041E-15 1.051476474909847E-14 7.9781058674314E-13 -2.6147324919794E-14 1.310678316584164E-13 5.527986695062743E-15
tp -2.230201849740741E-13 7.9781058674314E-13 1.918245859064868E-9 -8.918411213694967E-12 3.985822815504323E-10 4.291298895892135E-12
node 9.657679898558696E-15 -2.6147324919794E-14 -8.918411213694967E-12 3.387253740086527E-10 -3.308196090095185E-10 -1.650255275228187E-13
peri -4.122587331216577E-14 1.310678316584164E-13 3.985822815504323E-10 -3.308196090095185E-10 4.142466625728225E-10 9.148392556511262E-13
i -1.668965604139953E-15 5.527986695062743E-15 4.291298895892135E-12 -1.650255275228187E-13 9.148392556511262E-13 1.573647261552187E-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 MPO468900  

91420 (1999 NK60)          Discovered 1999-Jul-13 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 NK60 = 2003 EK29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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