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86180 (1999 RG221)
Classification: Main-belt Asteroid          SPK-ID: 2086180
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2412722718272214 5.0634e-08  
a 3.110895978686679 2.9109e-08 au
q 2.360323038490777 1.6476e-07 au
i 6.841458309654535 4.7635e-06 deg
node 116.5525280593694 3.9865e-05 deg
peri 257.0584929690799 4.1314e-05 deg
M 274.7043595915534 1.5033e-05 deg
tp 2459475.344043649715
(2021-Sep-17.84404365)
8.8407e-05 TDB
period 2004.133562926732
5.49
2.813e-05
7.702e-08
d
yr
n .1796287466361647 2.5212e-09 deg/d
Q 3.861468918882581 3.6133e-08 au
  Orbit Determination Parameters
   # obs. used (total)      482  
   data-arc span      9427 days (25.81 yr)  
   first obs. used      1993-07-19  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57426  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:45:35  

Additional Information
 Earth MOID = 1.37245 au 
 Jupiter MOID = 1.65768 au 
 T_jup = 3.163 
[ 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 14.8   n/a MPO439618  
diameter diameter 6.591 km 0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

86180 (1999 RG221)          Discovered 1999-Sep-05 by LONEOS at Anderson Mesa
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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