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91148 (1998 OY2)
Classification: Main-belt Asteroid          SPK-ID: 2091148
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1226565489405315 7.4116e-08  
a 3.142391562570639 3.931e-08 au
q 2.75695665808588 2.5037e-07 au
i 14.60869015371228 8.0879e-06 deg
node 289.7690141940456 3.3962e-05 deg
peri 104.4708272549268 5.6233e-05 deg
M 264.2012805105629 4.5507e-05 deg
tp 2459541.934692951569
(2021-Nov-23.43469295)
0.00026249 TDB
period 2034.646084012181
5.57
3.8179e-05
1.045e-07
d
yr
n .1769349484555589 3.3201e-09 deg/d
Q 3.527826467055398 4.4131e-08 au
  Orbit Determination Parameters
   # obs. used (total)      481  
   data-arc span      8045 days (22.03 yr)  
   first obs. used      1998-07-20  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57219  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:15:33  

Additional Information
 Earth MOID = 1.81009 au 
 Jupiter MOID = 1.95149 au 
 T_jup = 3.148 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456499.5 (2013-Jul-26.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1275848174608775 7.3187e-08  
q 2.733796895377823 2.4691e-07 au
tp 2455488.133267881851
(2010-Oct-18.63326788)
0.00022094 TDB
node 289.8739574509008 3.4082e-05 deg
peri 104.9368754614588 5.4784e-05 deg
i 14.59428542499785 8.0673e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      481  
   data-arc span      8045 days (22.03 yr)  
   first obs. used      1998-07-20  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57219  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:15:33  

Additional Information
 Jupiter MOID = 1.95149 au 
 T_jup = 3.148 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.356271835473229E-15 -1.793748427361401E-14 -8.985555509043919E-12 -2.966611089622787E-14 -1.724628528745886E-12 -2.476609166066733E-14
q -1.793748427361401E-14 6.096575054037053E-14 3.000842102056372E-11 1.061109909325306E-13 5.843781393527776E-12 8.759045167844503E-14
tp -8.985555509043919E-12 3.000842102056372E-11 4.881650617924074E-8 3.271629314775124E-11 9.5877577984065E-9 5.475512217587374E-11
node -2.966611089622787E-14 1.061109909325306E-13 3.271629314775124E-11 1.161583306345321E-9 -1.116373069765076E-9 1.615137657415375E-10
peri -1.724628528745886E-12 5.843781393527776E-12 9.5877577984065E-9 -1.116373069765076E-9 3.001253884455377E-9 -1.449806408158678E-10
i -2.476609166066733E-14 8.759045167844503E-14 5.475512217587374E-11 1.615137657415375E-10 -1.449806408158678E-10 6.508176568967006E-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 14.3   n/a MPO348071  
diameter diameter 4.261 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.322   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91148 (1998 OY2)          Discovered 1998-Jul-20 by ODAS at Caussols
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 OY2 = 1999 TD209 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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