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102169 (1999 RT227)
Classification: Main-belt Asteroid          SPK-ID: 2102169
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2421441030493005 3.9927e-08  
a 2.376225369526927 1.0309e-08 au
q 1.800836408779836 9.7113e-08 au
i 9.980141416193955 4.3256e-06 deg
node 135.9047662316754 2.7332e-05 deg
peri 159.0321599977049 2.8687e-05 deg
M 322.2131733165461 1.1285e-05 deg
tp 2459340.932552661836
(2021-May-06.43255266)		 4.2439e-05 TDB
period 1337.919147902371
3.66		 8.7066e-06
2.384e-08		 d
yr
n .2690745554874661 1.751e-09 deg/d
Q 2.951614330274017 1.2805e-08 au
   Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      9639 days (26.39 yr)  
   first obs. used      1994-01-19  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58697  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:56:20  

Additional Information
 Earth MOID = .786917 au 
 Jupiter MOID = 2.29221 au 
 T_jup = 3.481 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.00   n/a E2021B55  
diameter diameter 1.233 km 0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.507   0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102169 (1999 RT227)          Discovered 1999-Sep-07 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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