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2083 Smither (1973 WB)
Classification: Inner Main-belt Asteroid          SPK-ID: 2002083
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05123091518199636 1.4178e-08  
a 1.872050297629754 4.516e-09 au
q 1.776143447615453 2.6312e-08 au
i 18.45437378240368 5.7894e-07 deg
node 259.1786111722696 8.2026e-07 deg
peri 228.6891919400489 1.3005e-05 deg
M 150.9027282333018 1.3744e-05 deg
tp 2459004.334588039281
(2020-Jun-03.83458804)
3.5161e-05 TDB
period 935.5665729753384
2.56
3.3854e-06
9.269e-09
d
yr
n .3847935683027974 1.3924e-09 deg/d
Q 1.967957147644054 4.7474e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2374  
   data-arc span      25216 days (69.04 yr)  
   first obs. used      1952-07-25  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .35031  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:20:07  

Additional Information
 Earth MOID = .814779 au 
 Jupiter MOID = 3.18568 au 
 T_jup = 3.916 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457405.5 (2016-Jan-18.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05129837150809013 1.4158e-08  
q 1.775894539541672 2.6286e-08 au
tp 2457133.354334005305
(2015-Apr-20.85433401)
3.3206e-05 TDB
node 259.1954580618863 8.2048e-07 deg
peri 228.7107110942541 1.3002e-05 deg
i 18.45282581288928 5.789e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2374  
   data-arc span      25216 days (69.04 yr)  
   first obs. used      1952-07-25  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .35031  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:20:07  

Additional Information
 Jupiter MOID = 3.18568 au 
 T_jup = 3.916 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.004593061320892E-16 -3.672330359057228E-16 -3.261328506425422E-13 1.928223374897048E-15 -1.196201106267049E-13 -8.657166353443779E-16
q -3.672330359057228E-16 6.90967201783077E-16 6.380350047967308E-13 -3.533761089943163E-15 2.352886982229937E-13 1.758422673913421E-15
tp -3.261328506425422E-13 6.380350047967308E-13 1.10264898455828E-9 -8.491328789027213E-12 4.308141934394444E-10 2.631747084241889E-12
node 1.928223374897048E-15 -3.533761089943163E-15 -8.491328789027213E-12 6.731845424015939E-13 -3.546108734103329E-12 4.651959518153109E-14
peri -1.196201106267049E-13 2.352886982229937E-13 4.308141934394444E-10 -3.546108734103329E-12 1.690468094540394E-10 9.423895433156085E-13
i -8.657166353443779E-16 1.758422673913421E-15 2.631747084241889E-12 4.651959518153109E-14 9.423895433156085E-13 3.351308599213938E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.16   n/a MPO636093  
diameter diameter 3.767 km 0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 2.6717 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2007) Minor Planet Bull. 34, 8-10.]
[Warner, B.D. (2010) Minor Planet Bull. 37, 57-64.]
[Warner, B.D (2012) Minor Planet Bull. 39, 16-21.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 132-136.]
[Warner, B.D. (2017) Minor Planet Bull. 44, 12-19.]
geometric albedo albedo 0.613   0.194 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.721   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=8.34, mean=14.59, max.=20.83) deg.
U-B UB 0.223   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=8.34, mean=14.59, max.=20.83) deg.
Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

2083 Smither (1973 WB)          Discovered 1973-Nov-29 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1973 WB = 1950 XQ = 1952 OE = 1968 WB = 1978 WA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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