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113390 Helvetia (2002 SU19)
Classification: Main-belt Asteroid          SPK-ID: 2113390
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2028632219217076 5.027e-08  
a 2.302679353431685 1.0634e-08 au
q 1.835550400741938 1.1766e-07 au
i 7.360211896590916 5.6772e-06 deg
node 298.4641387920549 4.833e-05 deg
peri 8.640676437961528 5.0711e-05 deg
M 66.87703966369035 1.6722e-05 deg
tp 2458763.404578662379
(2019-Oct-06.90457866)
5.9001e-05 TDB
period 1276.287827792193
3.49
8.8408e-06
2.42e-08
d
yr
n .2820680352509133 1.9539e-09 deg/d
Q 2.769808306121431 1.2791e-08 au
  Orbit Determination Parameters
   # obs. used (total)      757  
   data-arc span      21603 days (59.15 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51435  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 16:19:15  

Additional Information
 Earth MOID = .820946 au 
 Jupiter MOID = 2.48398 au 
 T_jup = 3.552 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO338061  
diameter diameter 2.196 km 0.360 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.231   0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

113390 Helvetia           Discovered 2002 Sept. 29 by M. Griesser at Eschenberg Observatory, Winterthur.
Helvetia is an allegorical figure, similar to Justitia. She is a symbol for the nation of Switzerland (Latin: Confoederatio Helvetica), which has combined four different cultures and languages in peaceful coexistence since 1848. Each Swiss stamp carries her name, and her figure appears on most Swiss coins.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060219/MPCPages.arcLast Updated: 2010-06-03

[ show close-approach data ]
Alternate Designations
 2002 SU19 = 2001 FS166 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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