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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 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 
[ 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 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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