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2017 Wesson (A903 SC)
Classification: Main-belt Asteroid          SPK-ID: 2002017
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 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1861160362834908 1.2227e-08  
a 2.251769894689145 4.9421e-09 au
q 1.832679407267108 2.7304e-08 au
i 4.861126782249436 3.4776e-07 deg
node 171.289887912301 1.0068e-05 deg
peri 136.4976034850085 1.1614e-05 deg
M 336.9613346459108 6.1387e-06 deg
tp 2459475.484023882684
(2021-Sep-17.98402388)
2.1183e-05 TDB
period 1234.196866908333
3.38
4.0632e-06
1.112e-08
d
yr
n .2916876631698159 9.6028e-10 deg/d
Q 2.670860382111182 5.8619e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3423  
   data-arc span      43010 days (117.75 yr)  
   first obs. used      1903-09-20  
   last obs. used      2021-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44801  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:03:17  

Additional Information
 Earth MOID = .821282 au 
 Jupiter MOID = 2.59061 au 
 T_jup = 3.599 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457054.5 (2015-Feb-01.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1865903282850702 1.2222e-08  
q 1.831688466638533 2.7283e-08 au
tp 2457006.547513315424
(2014-Dec-15.04751332)
1.8062e-05 TDB
node 171.3169798274149 1.0067e-05 deg
peri 136.4246730773073 1.1602e-05 deg
i 4.860912748825367 3.4759e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3423  
   data-arc span      43010 days (117.75 yr)  
   first obs. used      1903-09-20  
   last obs. used      2021-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44801  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:03:17  

Additional Information
 Jupiter MOID = 2.59061 au 
 T_jup = 3.599 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.493754702120997E-16 -3.298231596279629E-16 -7.136233414099072E-14 -7.88711835667816E-15 -2.247315445238848E-14 2.550481598893003E-16
q -3.298231596279629E-16 7.443829758239418E-16 1.734285597907665E-13 1.787269361558467E-14 5.419719546309735E-14 -5.96489860462353E-16
tp -7.136233414099072E-14 1.734285597907665E-13 3.262491170692229E-10 -1.305168638813182E-11 1.027544516749984E-10 -1.439245678338523E-12
node -7.88711835667816E-15 1.787269361558467E-14 -1.305168638813182E-11 1.013452308935808E-10 -1.050548335960248E-10 1.506934283947745E-12
peri -2.247315445238848E-14 5.419719546309735E-14 1.027544516749984E-10 -1.050548335960248E-10 1.346063725921688E-10 -1.901557193004532E-12
i 2.550481598893003E-16 -5.96489860462353E-16 -1.439245678338523E-12 1.506934283947745E-12 -1.901557193004532E-12 1.208189802384084E-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 12.80   n/a E2021B10  
diameter diameter 7.223 km 0.156 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.4158 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.]
[Stephens, R.D.; Warner, B.D. (2019) Minor Planet Bull. 45, 66-71.]
geometric albedo albedo 0.200   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
B-V BV 0.887   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=9.54 deg.
U-B UB 0.545   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=9.54 deg.

2017 Wesson (A903 SC)          Discovered 1903-Sep-20 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A903 SC = 1936 FA2 = 1949 CG = 1950 LD1 = 1970 GE = 1974 QJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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