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120545 (1994 WS)
Classification: Main-belt Asteroid          SPK-ID: 2120545
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2179215057100027 3.0733e-08  
a 2.218118672200302 6.471e-09 au
q 1.73474291131094 7.0448e-08 au
i 1.983014545454291 3.0685e-06 deg
node 49.41037407791945 9.7698e-05 deg
peri 297.9604670301175 9.8115e-05 deg
M 15.45193347820045 7.2825e-06 deg
tp 2459148.708806104723
(2020-Oct-26.20880610)
2.4427e-05 TDB
period 1206.634097189446
3.30
5.2802e-06
1.446e-08
d
yr
n .2983505943007332 1.3056e-09 deg/d
Q 2.701494433089664 7.8811e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1254  
   data-arc span      10638 days (29.13 yr)  
   first obs. used      1991-12-27  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49042  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:07:02  

Additional Information
 Earth MOID = .727353 au 
 Jupiter MOID = 2.71898 au 
 T_jup = 3.620 
[ 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 16.12   n/a E2021B55  
diameter diameter 3.126 km 1.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.079   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

120545 (1994 WS)          Discovered 1994-Nov-25 by Kobayashi, T. at Oizumi
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1994 WS = 2002 AL172 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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