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3173 McNaught (1981 WY)
Classification: Main-belt Asteroid          SPK-ID: 2003173
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2105539962875069 3.012e-08  
a 2.203970029767953 7.8493e-09 au
q 1.739915332302414 6.6299e-08 au
i 7.794185229922177 3.6457e-06 deg
node 79.27780898505442 2.757e-05 deg
peri 219.1814566605586 2.9875e-05 deg
M 13.78527485787998 1.4433e-05 deg
tp 2458954.736431434730
(2020-Apr-15.23643143)
4.7818e-05 TDB
period 1195.10745003968
3.27
6.3844e-06
1.748e-08
d
yr
n .3012281447898659 1.6092e-09 deg/d
Q 2.668024727233491 9.502e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2357  
   data-arc span      15782 days (43.21 yr)  
   first obs. used      1977-05-19  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4424  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:00:41  

Additional Information
 Earth MOID = .732015 au 
 Jupiter MOID = 2.54969 au 
 T_jup = 3.622 
[ 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 13.1   n/a MPO473809  
diameter diameter 6.026 km 0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.286   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3173 McNaught (1981 WY)          Discovered 1981-Nov-24 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 WY = 1951 ND = 1977 KT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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