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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 ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1859978168653656 1.2385e-08  
a 2.251601092641524 5.332e-09 au
q 1.832808204958529 2.7441e-08 au
i 4.861061220630728 3.4842e-07 deg
node 171.2909474991413 1.0072e-05 deg
peri 136.4936832918744 1.1686e-05 deg
M 279.7787501326545 6.411e-06 deg
tp 2459475.493561902240
(2021-Sep-17.99356190)
2.2539e-05 TDB
period 1234.058088704799
3.38
4.3835e-06
1.2e-08
d
yr
n .2917204654262561 1.0362e-09 deg/d
Q 2.67039398032452 6.3237e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3282  
   data-arc span      42911 days (117.48 yr)  
   first obs. used      1903-09-20  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45674  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:14:41  

Additional Information
 Earth MOID = .820007 au 
 Jupiter MOID = 2.59192 au 
 T_jup = 3.599 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1865967745321485 1.2374e-08  
q 1.831692487869315 2.7432e-08 au
tp 2457006.558418573047
(2014-Dec-15.05841857)
1.865e-05 TDB
node 171.3174919001551 1.007e-05 deg
peri 136.4288591612053 1.1673e-05 deg
i 4.860847528777581 3.4824e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3282  
   data-arc span      42911 days (117.48 yr)  
   first obs. used      1903-09-20  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45674  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:14:41  

Additional Information
 Jupiter MOID = 2.59192 au 
 T_jup = 3.599 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.531054227085669E-16 -3.353315085877545E-16 -6.249357854658807E-14 -8.213059372711512E-15 -2.008154471705746E-14 2.22211740042967E-16
q -3.353315085877545E-16 7.525296283798611E-16 1.603576472286771E-13 1.834071636193792E-14 5.06870725601338E-14 -5.491058715567732E-16
tp -6.249357854658807E-14 1.603576472286771E-13 3.478129682226492E-10 -1.391217597803711E-11 1.086528686718276E-10 -1.524812530730655E-12
node -8.213059372711512E-15 1.834071636193792E-14 -1.391217597803711E-11 1.014130419452295E-10 -1.053258358815237E-10 1.511871172908886E-12
peri -2.008154471705746E-14 5.06870725601338E-14 1.086528686718276E-10 -1.053258358815237E-10 1.36258122545491E-10 -1.926658901825573E-12
i 2.22211740042967E-16 -5.491058715567732E-16 -1.524812530730655E-12 1.511871172908886E-12 -1.926658901825573E-12 1.21273497647258E-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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