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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3191236098141684 4.9117e-08  
a 2.552001342923536 1.7623e-08 au
q 1.737597462119172 1.293e-07 au
i 5.7414796014951 5.7486e-06 deg
node 232.3218530004602 3.9811e-05 deg
peri 141.5392411512636 4.1624e-05 deg
M 265.709751365166 1.6439e-05 deg
tp 2459786.517464753545
(2022-Jul-26.01746475)
6.9219e-05 TDB
period 1489.085980195469
4.08
1.5425e-05
4.223e-08
d
yr
n .2417590419814064 2.5043e-09 deg/d
Q 3.366405223727901 2.3247e-08 au
  Orbit Determination Parameters
   # obs. used (total)      504  
   data-arc span      11627 days (31.83 yr)  
   first obs. used      1989-08-30  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47416  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 09:31:01  

Additional Information
 Earth MOID = .742504 au 
 Jupiter MOID = 2.12831 au 
 T_jup = 3.360 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457830.5 (2017-Mar-18.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3181278334373216 4.9121e-08  
q 1.741323510088867 1.2922e-07 au
tp 2458297.339048403431
(2018-Jun-27.83904840)
6.5975e-05 TDB
node 232.3344581540654 3.9814e-05 deg
peri 141.5541879898309 4.1632e-05 deg
i 5.738904175553836 5.7466e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      504  
   data-arc span      11627 days (31.83 yr)  
   first obs. used      1989-08-30  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47416  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 09:31:01  

Additional Information
 Jupiter MOID = 2.12831 au 
 T_jup = 3.360 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.412916504263639E-15 -6.321734659557139E-15 1.588824549709551E-12 5.893461135824527E-16 3.225418585883323E-13 -3.010389264737704E-16
q -6.321734659557139E-15 1.669673493935158E-14 -3.962566275298258E-12 -3.545497557775959E-16 -8.218761426880999E-13 1.409967357854188E-15
tp 1.588824549709551E-12 -3.962566275298258E-12 4.352683831954233E-9 -2.130910654372725E-12 8.145565283751393E-10 -4.288431882402013E-12
node 5.893461135824527E-16 -3.545497557775959E-16 -2.130910654372725E-12 1.585187242950252E-9 -1.577078163744767E-9 9.849594811843603E-12
peri 3.225418585883323E-13 -8.218761426880999E-13 8.145565283751393E-10 -1.577078163744767E-9 1.733261062686564E-9 -1.060669800240525E-11
i -3.010389264737704E-16 1.409967357854188E-15 -4.288431882402013E-12 9.849594811843603E-12 -1.060669800240525E-11 3.302339631013182E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.64   n/a MPO614063  

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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