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85550 (1997 YW)
Classification: Main-belt Asteroid          SPK-ID: 2085550
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1859311256283031 4.6314e-08  
a 2.639410324237156 1.1087e-08 au
q 2.148661791656777 1.2167e-07 au
i 11.39446245557405 3.7778e-06 deg
node 270.2074495605261 2.2737e-05 deg
peri 134.3614617776583 2.4918e-05 deg
M 214.576610004618 1.0669e-05 deg
tp 2460029.189398193932
(2023-Mar-25.68939819)
4.8375e-05 TDB
period 1566.241739771357
4.29
9.8688e-06
2.702e-08
d
yr
n .229849576127727 1.4483e-09 deg/d
Q 3.130158856817535 1.3149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1602  
   data-arc span      8581 days (23.49 yr)  
   first obs. used      1997-12-20  
   last obs. used      2021-06-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46381  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:51:16  

Additional Information
 Earth MOID = 1.17531 au 
 Jupiter MOID = 2.2923 au 
 T_jup = 3.343 
[ 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 13.92   n/a E2021B10  

85550 (1997 YW)          Discovered 1997-Dec-20 by Kobayashi, T. at Oizumi
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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