113390 Helvetia

113390 Helvetia
Discovery
Discovered by	M. Griesser
Discovery site	Eschenberg Obs.
Discovery date	29 September 2002
Designations
MPC designation	(113390) Helvetia
Named after	Helvetia (Swiss symbol and national personification)
Alternative designations	2002 SU19 · 2001 FS166
Minor planet category	main-belt · (inner); background · Flora
Orbital characteristics
	Epoch 27 April 2019 (JD 2458600.5)
	Uncertainty parameter 0
Observation arc	57.45 yr (20,985 d)
Aphelion	2.7712 AU
Perihelion	1.8353 AU
Semi-major axis	2.3033 AU
Eccentricity	0.2032
Orbital period (sidereal)	3.50 yr (1,277 d)
Mean anomaly	314.06°
Mean motion	0° 16m 55.2s / day
Inclination	7.3588°
Longitude of ascending node	298.47°
Argument of perihelion	8.6509°
Physical characteristics
Mean diameter	2.196±0.360
Geometric albedo	0.231±0.103
Spectral type	S (assumed)
Absolute magnitude (H)	15.5; 15.6

113390 Helvetia (provisional designation 2002 SU₁₉) is a background asteroid from the inner regions of the asteroid belt, approximately 2.2 kilometers (1.4 miles) kilometers in diameter. It was discovered on 29 September 2002, by Swiss astronomer Markus Griesser at the Eschenberg Observatory in Winterthur, near Zürich, Switzerland. The presumed stony Florian asteroid was named after the Swiss national symbol, Helvetia.^[1]

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[MPC-object-1] Cite error: The named reference MPC-object was invoked but never defined (see the help page).

[jpldata-2] Cite error: The named reference jpldata was invoked but never defined (see the help page).

[AstDys-object-3] Cite error: The named reference AstDys-object was invoked but never defined (see the help page).

[Ferret-4] Cite error: The named reference Ferret was invoked but never defined (see the help page).

[lcdb-5] Cite error: The named reference lcdb was invoked but never defined (see the help page).

[Mainzer-2016-6] Cite error: The named reference Mainzer-2016 was invoked but never defined (see the help page).

[Masiero-2011-7] Cite error: The named reference Masiero-2011 was invoked but never defined (see the help page).

[WISE-8] Cite error: The named reference WISE was invoked but never defined (see the help page).

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