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46291 (2001 KN54)
Classification: Main-belt Asteroid          SPK-ID: 2046291
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03384062916605921 5.3537e-08  
a 2.965018762795455 2.2574e-08 au
q 2.864680662373287 1.6548e-07 au
i 9.661832040264397 8.1558e-06 deg
node 179.9699824678204 2.543e-05 deg
peri 70.19871952526988 0.00011966 deg
M 235.7267626480938 0.00011908 deg
tp 2459644.246242331348
(2022-Mar-05.74624233)
0.00061957 TDB
period 1864.831496929941
5.11
2.1296e-05
5.831e-08
d
yr
n .1930469324400974 2.2046e-09 deg/d
Q 3.065356863217624 2.3338e-08 au
  Orbit Determination Parameters
   # obs. used (total)      821  
   data-arc span      15756 days (43.14 yr)  
   first obs. used      1977-09-09  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59275  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:47:57  

Additional Information
 Earth MOID = 1.87011 au 
 Jupiter MOID = 1.93379 au 
 T_jup = 3.242 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456676.5 (2014-Jan-19.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03710472247705607 5.3774e-08  
q 2.852651492949992 1.6676e-07 au
tp 2455909.953584180811
(2011-Dec-14.45358418)
0.00054279 TDB
node 180.0699171585955 2.5483e-05 deg
peri 69.04951839388339 0.00010834 deg
i 9.650996984497123 8.1488e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      821  
   data-arc span      15756 days (43.14 yr)  
   first obs. used      1977-09-09  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59275  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:47:57  

Additional Information
 Jupiter MOID = 1.93379 au 
 T_jup = 3.242 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.891676526242287E-15 -8.896269164436779E-15 -1.905716070251247E-11 -5.079267927424555E-15 -3.678734810554479E-12 2.238518571712337E-16
q -8.896269164436779E-15 2.780734584149897E-14 6.048610715042741E-11 1.78812693549812E-14 1.170811999116419E-11 1.366401541475678E-15
tp -1.905716070251247E-11 6.048610715042741E-11 2.946217731838752E-7 4.930247939803829E-12 5.716109750293001E-8 -1.425564036831214E-11
node -5.079267927424555E-15 1.78812693549812E-14 4.930247939803829E-12 6.493831188300575E-10 -6.390689238527874E-10 6.894333835170689E-11
peri -3.678734810554479E-12 1.170811999116419E-11 5.716109750293001E-8 -6.390689238527874E-10 1.173647799357702E-8 -7.07202705350562E-11
i 2.238518571712337E-16 1.366401541475678E-15 -1.425564036831214E-11 6.894333835170689E-11 -7.07202705350562E-11 6.640321028732094E-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 14.5   n/a MPO272850  
diameter diameter 4.139 km 1.430 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.215   0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46291 (2001 KN54)          Discovered 2001-May-17 by JPL/NEAT at Haleakala
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1917-Jan-23 02:06 00:03 Jupiter 1.95450590983566 1.9545051828082 1.95450663686523 3.88505063239197 3.77185367775532 2421251.587487187 3.24923830424888 220.839647090096 27.6634645017707 84.2659166737893 1938878.41484047 T 19 CATAB v2.0f-lin.ifort 2020-Nov-12 23:47:59 2020-Nov-12 23:48
1952-Nov-28 14:19 00:02 Jupiter 1.97809271623224 1.97809202542794 1.97809340703733 3.75989582295138 3.64423014491757 2434345.096326998 2.08800250713123 135.144386045893 25.8954524051668 81.7532899287661 1993337.76136505 T 19 CATAB v2.0f-lin.ifort 2020-Nov-12 23:47:59 2020-Nov-12 23:48
2176-Nov-13 05:01 00:05 Jupiter 1.98142239575168 1.98142125880688 1.98142353271586 4.3346906476203 4.23492371859673 2516144.708766639 5.10119349149334 390.324477497977 30.1868026911459 -83.5824304805449 2173230.3855219 T 19 CATAB v2.0f-lin.ifort 2020-Nov-12 23:47:59 2020-Nov-12 23:48

Alternate Designations
 2001 KN54 = 1977 RB11 = 1998 UW28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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