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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1428832012022286 4.3702e-08  
a 2.575390301283766 1.162e-08 au
q 2.20741029069117 1.1395e-07 au
i 6.279637712479504 4.8871e-06 deg
node 336.6443966462777 3.0733e-05 deg
peri 350.9612054235157 3.3512e-05 deg
M 174.3917725096403 1.612e-05 deg
tp 2458469.215275516882
(2018-Dec-16.71527552)
6.4264e-05 TDB
period 1509.603905192085
4.13
1.0217e-05
2.797e-08
d
yr
n .2384731509780991 1.614e-09 deg/d
Q 2.943370311876363 1.328e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1211  
   data-arc span      18792 days (51.45 yr)  
   first obs. used      1969-10-08  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52785  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:41:11  

Additional Information
 Earth MOID = 1.1944 au 
 Jupiter MOID = 2.39054 au 
 T_jup = 3.405 
[ 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 14.68   n/a MPCxxxxx  
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

Alternate Designations
 1998 SW156 = 1969 TD8 = 2000 AA47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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