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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2018039375990914 7.8712e-08  
a 1.232844632813547 2.5837e-08 au
q .9840517314638673 1.1171e-07 au
i 1.481007104108706 4.1852e-06 deg
node 84.36615177197216 2.5211e-05 deg
peri 209.3849970184078 5.2974e-05 deg
M 284.6184512841202 6.2467e-05 deg
tp 2459501.194412726605
(2021-Oct-13.69441273)
8.5185e-05 TDB
period 499.989576011963
1.37
1.5717e-05
4.303e-08
d
yr
n .7200150108557192 2.2634e-08 deg/d
Q 1.481637534163227 3.105e-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 = .00248324 au 
 Jupiter MOID = 3.66409 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 MPO598751  
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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