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52910 (1998 SY91)
Classification: Main-belt Asteroid          SPK-ID: 2052910
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1233534261439049 4.0363e-08  
a 2.277040491116762 9.261e-09 au
q 1.99615974506911 9.3514e-08 au
i 3.044701712980083 4.26e-06 deg
node 266.6232106324297 9.4335e-05 deg
peri 120.4615753050155 9.7159e-05 deg
M 96.42074622775948 2.2873e-05 deg
tp 2458664.358182011821
(2019-Jun-29.85818201)
7.8963e-05 TDB
period 1255.031299901985
3.44
7.6565e-06
2.096e-08
d
yr
n .2868454356701025 1.7499e-09 deg/d
Q 2.557921237164415 1.0403e-08 au
  Orbit Determination Parameters
   # obs. used (total)      703  
   data-arc span      15588 days (42.68 yr)  
   first obs. used      1977-07-20  
   last obs. used      2020-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56284  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:15:41  

Additional Information
 Earth MOID = 1.00272 au 
 Jupiter MOID = 2.86752 au 
 T_jup = 3.596 
[ show covariance matrix ]

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 16.0   n/a MPO502509  

52910 (1998 SY91)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2059-Nov-04 22:37 00:05 Thisb 0.0490139040180767 0.0490100683226197 0.0490177399976662 1.91010294714483 1.91010287431678 2473402.442481880 4.92339579455738 269.381816740286 39.9819205506321 -45.4888774577384 131844.219813106 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 23:15:42 2020-Nov-12 23:15
2104-Oct-13 11:25 < 00:01 Hebe 0.0261812211460165 0.026169320541483 0.0261931242823168 6.2316186838274 6.23161864572374 2489815.975686632 0.391148393091079 719.140636765558 27.6348405017346 34.4324715588483 80240.1069457123 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 23:15:42 2020-Nov-12 23:15

Alternate Designations
 1998 SY91 = 1981 UK3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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