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52866 (1998 ST23)
Classification: Main-belt Asteroid          SPK-ID: 2052866
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .11301479924203 3.5502e-08  
a 2.327182822752557 9.5204e-09 au
q 2.064176723239676 8.0912e-08 au
i 7.757646038123185 4.362e-06 deg
node 144.3476794142793 2.5657e-05 deg
peri 131.8248423686357 3.2719e-05 deg
M 111.4436434538837 1.8555e-05 deg
tp 2458599.081871116745
(2019-Apr-25.58187112)
6.6974e-05 TDB
period 1296.713943651451
3.55
7.9572e-06
2.179e-08
d
yr
n .2776248391270217 1.7036e-09 deg/d
Q 2.590188922265438 1.0596e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1064  
   data-arc span      8346 days (22.85 yr)  
   first obs. used      1997-01-31  
   last obs. used      2019-12-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53391  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:37:21  

Additional Information
 Earth MOID = 1.05702 au 
 Jupiter MOID = 2.53463 au 
 T_jup = 3.553 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457313.5 (2015-Oct-18.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1128419373762893 3.5451e-08  
q 2.064728165970179 8.084e-08 au
tp 2457303.328024166654
(2015-Oct-07.82802417)
6.83e-05 TDB
node 144.3900170632446 2.5661e-05 deg
peri 132.1288704405354 3.2754e-05 deg
i 7.756805235976109 4.3617e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1064  
   data-arc span      8346 days (22.85 yr)  
   first obs. used      1997-01-31  
   last obs. used      2019-12-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53391  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:37:21  

Additional Information
 Jupiter MOID = 2.53463 au 
 T_jup = 3.553 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.256779695022086E-15 -2.850992412367986E-15 3.311271263580143E-13 -2.238155614944382E-15 8.454670202238738E-14 -2.033011129200299E-15
q -2.850992412367986E-15 6.535168675642253E-15 -8.883875016495288E-13 4.203600645266105E-15 -2.317300677908856E-13 4.540095792236411E-15
tp 3.311271263580143E-13 -8.883875016495288E-13 4.664833818758689E-9 -3.82709696495872E-12 1.398592169151351E-9 1.432721393956473E-12
node -2.238155614944382E-15 4.203600645266105E-15 -3.82709696495872E-12 6.585000680253128E-10 -6.530795660777864E-10 2.155596039990162E-12
peri 8.454670202238738E-14 -2.317300677908856E-13 1.398592169151351E-9 -6.530795660777864E-10 1.072826386219034E-9 -1.65167389030354E-12
i -2.033011129200299E-15 4.540095792236411E-15 1.432721393956473E-12 2.155596039990162E-12 -1.65167389030354E-12 1.9024051393887E-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 15.4   n/a MPO502509  

52866 (1998 ST23)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 ST23 = 2001 KA46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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