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35643 (1998 KN55)
Classification: Main-belt Asteroid          SPK-ID: 2035643
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1367446111091281 2.9947e-08  
a 2.791987247767919 1.1227e-08 au
q 2.41019803735025 8.2617e-08 au
i 9.058180303679157 3.3798e-06 deg
node 176.8419807056263 2.0265e-05 deg
peri 280.0779606020944 2.4113e-05 deg
M 131.0392770393534 1.2242e-05 deg
tp 2458776.248875971919
(2019-Oct-19.74887597)
5.7657e-05 TDB
period 1703.996005587324
4.67
1.0278e-05
2.814e-08
d
yr
n .2112681008755752 1.2743e-09 deg/d
Q 3.173776458185588 1.2762e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2271  
   data-arc span      8476 days (23.21 yr)  
   first obs. used      1998-05-23  
   last obs. used      2021-08-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46099  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 00:19:31  

Additional Information
 Earth MOID = 1.44705 au 
 Jupiter MOID = 2.04421 au 
 T_jup = 3.297 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457627.5 (2016-Aug-27.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1367767873026042 2.9904e-08  
q 2.410789893338441 8.2574e-08 au
tp 2457074.192456534441
(2015-Feb-20.69245653)
5.8215e-05 TDB
node 176.8550398179562 2.0262e-05 deg
peri 280.6501108835915 2.4107e-05 deg
i 9.057837863577246 3.3799e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2271  
   data-arc span      8476 days (23.21 yr)  
   first obs. used      1998-05-23  
   last obs. used      2021-08-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46099  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 00:19:31  

Additional Information
 Jupiter MOID = 2.04421 au 
 T_jup = 3.297 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.942688779064817E-16 -2.452645440432125E-15 -1.095472202089191E-13 -7.112184478739928E-15 -3.93094771624322E-14 -2.252750515176413E-15
q -2.452645440432125E-15 6.818455948288367E-15 2.176786952334731E-13 2.004589128901592E-14 9.554150346177439E-14 6.434248664974424E-15
tp -1.095472202089191E-13 2.176786952334731E-13 3.389005464128569E-9 -1.752063473921166E-12 7.702686443012592E-10 -2.309384083686583E-12
node -7.112184478739928E-15 2.004589128901592E-14 -1.752063473921166E-12 4.105633637676398E-10 -4.053207209080454E-10 1.341807973551277E-12
peri -3.93094771624322E-14 9.554150346177439E-14 7.702686443012592E-10 -4.053207209080454E-10 5.811435951604533E-10 -1.736543275528102E-12
i -2.252750515176413E-15 6.434248664974424E-15 -2.309384083686583E-12 1.341807973551277E-12 -1.736543275528102E-12 1.14234641664455E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.65   n/a MPO636584  
diameter diameter 5.058 km 0.222 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.397   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35643 (1998 KN55)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 KN55 = 1999 RR128 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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