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91186 (1998 RO66)
Classification: Main-belt Asteroid          SPK-ID: 2091186
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .193833659475973 4.0085e-08  
a 3.082092559518923 2.3164e-08 au
q 2.484679279863701 1.2764e-07 au
i 7.095025790974861 7.5709e-06 deg
node 338.9897453576241 3.1349e-05 deg
peri 108.5407747257992 3.6329e-05 deg
M 297.1543286449241 2.0445e-05 deg
tp 2459345.516457478157
(2021-May-11.01645748)
0.00011438 TDB
period 1976.364036122352
5.41
2.2281e-05
6.1e-08
d
yr
n .1821526770474553 2.0535e-09 deg/d
Q 3.679505839174144 2.7654e-08 au
  Orbit Determination Parameters
   # obs. used (total)      831  
   data-arc span      7995 days (21.89 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54798  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:16:16  

Additional Information
 Earth MOID = 1.51225 au 
 Jupiter MOID = 1.59392 au 
 T_jup = 3.187 
[ 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 14.0   n/a MPO309818  
diameter diameter 5.240 km 0.337 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.87970 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.213   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91186 (1998 RO66)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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Alternate Designations
 1998 RO66 = 2000 AM63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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