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120402 (2005 RY8)
Classification: Main-belt Asteroid          SPK-ID: 2120402
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2007794365758695 4.9736e-08  
a 3.092568821055452 2.3298e-08 au
q 2.471644595591837 1.6492e-07 au
i 2.934916344574111 5.8533e-06 deg
node 151.8038741215009 0.00011836 deg
peri 157.3333807903258 0.00011976 deg
M 330.0604848359951 1.8842e-05 deg
tp 2459365.703692030657
(2021-May-31.20369203)		 0.00010479 TDB
period 1986.449306384851
5.44		 2.2447e-05
6.146e-08		 d
yr
n .1812278817500588 2.0479e-09 deg/d
Q 3.713493046519066 2.7975e-08 au
   Orbit Determination Parameters
   # obs. used (total)      500  
   data-arc span      9362 days (25.63 yr)  
   first obs. used      1994-10-06  
   last obs. used      2020-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55245  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:57:26  

Additional Information
 Earth MOID = 1.45543 au 
 Jupiter MOID = 1.57015 au 
 T_jup = 3.191 
[ 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 15.3   n/a MPO469248  
diameter diameter 4.505 km 0.201 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120402 (2005 RY8)          Discovered 2005-Sep-08 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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