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35646 (1998 KO66)
Classification: Main-belt Asteroid          SPK-ID: 2035646
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1028851675073436 4.4417e-08  
a 3.096215474353703 1.9427e-08 au
q 2.777660826635993 1.3228e-07 au
i 4.576243642119598 4.1081e-06 deg
node 244.3079527292967 6.0812e-05 deg
peri 287.8601726966414 6.402e-05 deg
M 142.4289685525666 1.9862e-05 deg
tp 2458609.198605703800
(2019-May-05.69860570)
0.00011123 TDB
period 1989.963873409828
5.45
1.8729e-05
5.128e-08
d
yr
n .1809078068252241 1.7026e-09 deg/d
Q 3.414770122071414 2.1426e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1044  
   data-arc span      11190 days (30.64 yr)  
   first obs. used      1990-12-19  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53469  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 00:19:31  

Additional Information
 Earth MOID = 1.78811 au 
 Jupiter MOID = 1.59436 au 
 T_jup = 3.210 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457182.5 (2015-Jun-09.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1029346084744547 4.4314e-08  
q 2.770546843265133 1.321e-07 au
tp 2456614.104959566972
(2013-Nov-17.60495957)
0.00011497 TDB
node 244.6232584594045 6.0531e-05 deg
peri 285.0842948386351 6.3849e-05 deg
i 4.591033724144387 4.119e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1044  
   data-arc span      11190 days (30.64 yr)  
   first obs. used      1990-12-19  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53469  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 00:19:31  

Additional Information
 Jupiter MOID = 1.59436 au 
 T_jup = 3.210 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.963687439605543E-15 -5.813686946190786E-15 -6.072413436306807E-13 5.820968599671584E-15 -1.06093655755453E-13 5.232129111208098E-18
q -5.813686946190786E-15 1.744987700158762E-14 1.335902495631844E-12 -2.586092964568616E-14 2.504783087479695E-13 -5.303292104069865E-16
tp -6.072413436306807E-13 1.335902495631844E-12 1.321754009501194E-8 3.904523676581684E-11 2.36693835735265E-9 5.461132133721313E-13
node 5.820968599671584E-15 -2.586092964568616E-14 3.904523676581684E-11 3.663994270811506E-9 -3.645958389086662E-9 -3.480433577603064E-12
peri -1.06093655755453E-13 2.504783087479695E-13 2.36693835735265E-9 -3.645958389086662E-9 4.076666771958001E-9 3.477197136318964E-12
i 5.232129111208098E-18 -5.303292104069865E-16 5.461132133721313E-13 -3.480433577603064E-12 3.477197136318964E-12 1.696576676367114E-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 14.31   n/a MPCxxxxx  
diameter diameter 7.249 km 0.260 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.95211 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.077   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35646 (1998 KO66)          Discovered 1998-May-18 by LONEOS at Anderson Mesa
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 KO66 = 1995 UN61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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