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46980 (1998 SW156)
Classification: Main-belt Asteroid          SPK-ID: 2046980
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1428176315644918 4.4452e-08  
a 2.575383012039982 1.2079e-08 au
q 2.207572909889005 1.1544e-07 au
i 6.279151188051157 4.9313e-06 deg
node 336.6474062624584 3.7194e-05 deg
peri 350.9143542588968 4.0111e-05 deg
M 126.757191164815 1.6556e-05 deg
tp 2458468.965726664088
(2018-Dec-16.46572666)
6.7425e-05 TDB
period 1509.597496146187
4.13
1.0621e-05
2.908e-08
d
yr
n .2384741634237171 1.6778e-09 deg/d
Q 2.94319311419096 1.3804e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1024  
   data-arc span      18373 days (50.30 yr)  
   first obs. used      1969-10-08  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5503  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:38:35  

Additional Information
 Earth MOID = 1.19649 au 
 Jupiter MOID = 2.39066 au 
 T_jup = 3.405 
[ 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 14.6   n/a MPO502469  
diameter diameter 3.406 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.241   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46980 (1998 SW156)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SW156 = 1969 TD8 = 2000 AA47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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