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181705 (1989 RY)
Classification: Main-belt Asteroid          SPK-ID: 2181705
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 .3189933250745731 5.5492e-08  
a 2.552083679206691 1.9151e-08 au
q 1.737986020507998 1.429e-07 au
i 5.741071039803212 5.7918e-06 deg
node 232.3223881317975 5.0251e-05 deg
peri 141.5428280280618 5.154e-05 deg
M 218.3067623971713 1.6932e-05 deg
tp 2459786.621179827569
(2022-Jul-26.12117983)
7.245e-05 TDB
period 1489.158045279306
4.08
1.6762e-05
4.589e-08
d
yr
n .2417473424941128 2.7212e-09 deg/d
Q 3.366181337905383 2.5261e-08 au
  Orbit Determination Parameters
   # obs. used (total)      438  
   data-arc span      11198 days (30.66 yr)  
   first obs. used      1989-08-30  
   last obs. used      2020-04-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48859  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:41  

Additional Information
 Earth MOID = .742278 au 
 Jupiter MOID = 2.12765 au 
 T_jup = 3.360 
[ 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 15.61   n/a E2021B55  

181705 (1989 RY)          Discovered 1989-Sep-03 by Elst, E. W. at Haute Provence
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1989 RY = 2003 CN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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