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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1941930658117983 3.8987e-08  
a 3.083412443525453 1.7287e-08 au
q 2.484635127954997 1.2652e-07 au
i 7.094913454352843 4.7961e-06 deg
node 338.9866819125711 2.9846e-05 deg
peri 108.5113556411718 3.2833e-05 deg
M 9.30793555913235 1.2188e-05 deg
tp 2459345.367535547493
(2021-May-10.86753555)
6.6928e-05 TDB
period 1977.6337175908
5.41
1.6631e-05
4.553e-08
d
yr
n .1820357312872681 1.5309e-09 deg/d
Q 3.682189759095909 2.0644e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1268  
   data-arc span      8247 days (22.58 yr)  
   first obs. used      1998-09-14  
   last obs. used      2021-04-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50183  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:39:54  

Additional Information
 Earth MOID = 1.51224 au 
 Jupiter MOID = 1.59217 au 
 T_jup = 3.186 
[ 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 14.06   n/a E2021B10  
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. 2020-October); 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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