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91550 (1999 RW210)
Classification: Main-belt Asteroid          SPK-ID: 2091550
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0996885966710085 4.3857e-08  
a 3.114316725887898 2.8537e-08 au
q 2.803854861895084 1.4678e-07 au
i 9.909659965711208 6.6987e-06 deg
node 315.2935888516067 2.6979e-05 deg
peri 99.14650440731094 4.6759e-05 deg
M 316.9780658448578 3.9458e-05 deg
tp 2459636.399876650800
(2022-Feb-25.89987665)
0.00022145 TDB
period 2007.440095158192
5.50
2.7592e-05
7.554e-08
d
yr
n .1793328731792771 2.4649e-09 deg/d
Q 3.424778589880713 3.1382e-08 au
  Orbit Determination Parameters
   # obs. used (total)      731  
   data-arc span      9264 days (25.36 yr)  
   first obs. used      1996-03-27  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52836  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:02:32  

Additional Information
 Earth MOID = 1.83716 au 
 Jupiter MOID = 1.90842 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 14.34   n/a E2021B10  
diameter diameter 7.701 km 0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.082   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91550 (1999 RW210)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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