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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .033761692750531 5.3054e-08  
a 2.964679902539139 2.205e-08 au
q 2.864587290565938 1.6443e-07 au
i 9.662936099103025 8.0632e-06 deg
node 179.9642314642582 2.4818e-05 deg
peri 70.45027932432741 0.00011998 deg
M 274.0796454559098 0.00011971 deg
tp 2459645.498657234970
(2022-Mar-06.99865723)
0.00062184 TDB
period 1864.51181975026
5.10
2.0801e-05
5.695e-08
d
yr
n .1930800310229301 2.1541e-09 deg/d
Q 3.06477251451234 2.2794e-08 au
  Orbit Determination Parameters
   # obs. used (total)      832  
   data-arc span      15837 days (43.36 yr)  
   first obs. used      1977-09-09  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59449  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 04:45:35  

Additional Information
 Earth MOID = 1.8686 au 
 Jupiter MOID = 1.9335 au 
 T_jup = 3.243 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456773.5 (2014-Apr-26.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03704555809997477 5.3546e-08  
q 2.852942276450284 1.6657e-07 au
tp 2455909.615015695861
(2011-Dec-14.11501570)
0.00054325 TDB
node 180.0681270438045 2.4875e-05 deg
peri 69.00140834171063 0.00010822 deg
i 9.650760560392536 8.0554e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      832  
   data-arc span      15837 days (43.36 yr)  
   first obs. used      1977-09-09  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59449  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 04:45:35  

Additional Information
 Jupiter MOID = 1.9335 au 
 T_jup = 3.243 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.867136467753274E-15 -8.853320110541873E-15 -1.919538375465191E-11 -7.983570189197511E-15 -3.70204343959423E-12 -4.166646427787266E-16
q -8.853320110541873E-15 2.774714454020396E-14 6.089117827223712E-11 2.663549947524942E-14 1.177704852559377E-11 3.0281401790086E-15
tp -1.919538375465191E-11 6.089117827223712E-11 2.951203680320904E-7 4.211370610339019E-11 5.722409437772378E-8 -6.254687882887991E-12
node -7.983570189197511E-15 2.663549947524942E-14 4.211370610339019E-11 6.18785630113013E-10 -6.016732855920513E-10 6.214859780290904E-11
peri -3.70204343959423E-12 1.177704852559377E-11 5.722409437772378E-8 -6.016732855920513E-10 1.171241191175922E-8 -6.248116377755566E-11
i -4.166646427787266E-16 3.0281401790086E-15 -6.254687882887991E-12 6.214859780290904E-11 -6.248116377755566E-11 6.488959020278302E-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 14.53   n/a E2021B10  
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

[ hide close-approach data ]
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 1.95450589531617 1.95450518538902 1.95450660524521 3.88505054875027 3.77185359074991 2421251.587443620 3.17264016165276 216.123656409812 27.3197892942234 84.4753508138811 1956713.82134624 T 21 CATAB v2.0f-lin.ifort 2021-Feb-24 04:45:37 2021-Feb-24 04:45
1952-Nov-28 14:19 00:02 Jupiter 1.97809270152065 1.9780920268425 1.97809337619948 3.75989573130637 3.64423004948992 2434345.096300677 2.04050854556217 132.805921494129 25.4796442193996 82.0569262119819 2010594.3983814 T 21 CATAB v2.0f-lin.ifort 2021-Feb-24 04:45:37 2021-Feb-24 04:45
2176-Nov-13 05:01 00:05 Jupiter 1.98142237224287 1.98142126462793 1.98142347987571 4.33469048646166 4.23492355244385 2516144.708839023 4.97061005706488 380.474859755459 30.0415846271361 -83.656956255077 2183392.44429092 T 21 CATAB v2.0f-lin.ifort 2021-Feb-24 04:45:37 2021-Feb-24 04:45

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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