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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 ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1208094914500992 6.9151e-08  
a 3.136648716449616 3.4183e-08 au
q 2.757711780157731 2.2872e-07 au
i 14.59938941834272 7.301e-06 deg
node 289.7442683341504 3.2114e-05 deg
peri 105.0626894911161 5.0551e-05 deg
M 333.6460943353788 3.9685e-05 deg
tp 2459545.038740866107
(2021-Nov-26.53874087)
0.00022464 TDB
period 2029.071037602766
5.56
3.3169e-05
9.081e-08
d
yr
n .1774210923760066 2.9003e-09 deg/d
Q 3.5155856527415 3.8312e-08 au
  Orbit Determination Parameters
   # obs. used (total)      504  
   data-arc span      8421 days (23.06 yr)  
   first obs. used      1998-07-20  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57013  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:38  

Additional Information
 Earth MOID = 1.81007 au 
 Jupiter MOID = 1.95596 au 
 T_jup = 3.151 
[ 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 14.27   n/a E2020-QM9  
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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