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(1998 KY26)
Classification: Apollo [NEO]          SPK-ID: 3012392
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2018260604971738 7.842e-08  
a 1.232853192845319 2.5259e-08 au
q .9840312897619856 1.1095e-07 au
i 1.481026567515465 4.1854e-06 deg
node 84.36685555355844 2.5204e-05 deg
peri 209.3714639369032 5.2941e-05 deg
M 143.5149861770323 6.4698e-05 deg
tp 2459001.175709921320
(2020-May-31.67570992)
9.3322e-05 TDB
period 499.9947834005967
1.37
1.5366e-05
4.207e-08
d
yr
n .7200075119815147 2.2127e-08 deg/d
Q 1.481675095928652 3.0357e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -2.460264437832022E-13 4.249E-14
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
NN [SET] 0. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      75  
   # delay obs. used      2  
   # Doppler obs. used      2  
   data-arc span      8234 days (22.54 yr)  
   first obs. used      1998-05-31  
   last obs. used      2020-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52729  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Jan-06 09:32:32  

Additional Information
 Earth MOID = .00290944 au 
 Jupiter MOID = 3.66518 au 
 T_jup = 5.174 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 25.60   n/a E2021A42  
diameter diameter 0.03 km n/a S.J. Ostro et al. (1999) Science v.285, pp.557-559 effective diameter bound: 20-40m
rotation period rot_per 0.1784 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Hicks, M.; Weissman, P.; Rabinowitz, D.L.; Chamberlin, A.B.; Buratti, B.J.; Lee, C.O. (1998) Bull. Amer. Astron. Soc. 30, 1029.]
[Pravec, P.; Sarounova, L. (1998) IAUC 6941. (1998 KY26)]
[Ostro, S.J.; Pravec, P.; Benner, L.A.M.; Hudson, R.S.; et al. (1999) Science 285, 557-559.]

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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