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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 ]

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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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05143530066702192 3.8141e-08  
a 1.872075183321344 4.9798e-09 au
q 1.775784433395941 7.2547e-08 au
i 18.45568504552347 4.3732e-06 deg
node 259.1823520589263 1.1151e-05 deg
peri 228.7287169669256 4.7896e-05 deg
M 358.4634640101258 4.6638e-05 deg
tp 2459004.493223262960
(2020-Jun-03.99322326)
0.0001212 TDB
period 935.5852281620614
2.56
3.7331e-06
1.022e-08
d
yr
n .3847858956764557 1.5353e-09 deg/d
Q 1.968365933246748 5.236e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2116  
   data-arc span      24665 days (67.53 yr)  
   first obs. used      1952-07-25  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36126  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:12:17  

Additional Information
 Earth MOID = .814434 au 
 Jupiter MOID = 3.18787 au 
 T_jup = 3.916 
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Orbital Elements at Epoch 2457289.5 (2015-Sep-24.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0513195945879721 3.8115e-08  
q 1.775928003703509 7.2519e-08 au
tp 2457133.467312815406
(2015-Apr-20.96731282)
0.00012207 TDB
node 259.1975951788248 1.1155e-05 deg
peri 228.7553400443356 4.8031e-05 deg
i 18.45232166420007 4.3729e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2116  
   data-arc span      24665 days (67.53 yr)  
   first obs. used      1952-07-25  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36126  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:12:17  

Additional Information
 Jupiter MOID = 3.18787 au 
 T_jup = 3.916 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.452775864268371E-15 -2.758481902137163E-15 -4.535407174870379E-13 -2.171528870619107E-15 -8.903884908589656E-14 1.650302838234367E-15
q -2.758481902137163E-15 5.259004534940288E-15 7.935917544706942E-13 4.382849937836178E-15 1.443088597328251E-13 -3.247085052960037E-15
tp -4.535407174870379E-13 7.935917544706942E-13 1.490046558802275E-8 6.444897733523649E-12 5.703558755534722E-9 3.782928775350932E-11
node -2.171528870619107E-15 4.382849937836178E-15 6.444897733523649E-12 1.244397023146457E-10 -1.151639078541768E-10 -1.08357777450215E-11
peri -8.903884908589656E-14 1.443088597328251E-13 5.703558755534722E-9 -1.151639078541768E-10 2.307022365440973E-9 2.497157994906293E-11
i 1.650302838234367E-15 -3.247085052960037E-15 3.782928775350932E-11 -1.08357777450215E-11 2.497157994906293E-11 1.912203195028561E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1   n/a MPO502173  
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. 2019-August); 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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