678 Fredegundis

678 Fredegundis
Discovery
Discovered by	W. Lorenz
Discovery site	Heidelberg
Discovery date	22 January 1909
Designations
Alternative designations	1909 FS
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	103.26 yr (37,715 d)
Aphelion	3.1352 AU (469.02 Gm)
Perihelion	2.0122 AU (301.02 Gm)
Semi-major axis	2.5737 AU (385.02 Gm)
Eccentricity	0.21817
Orbital period (sidereal)	4.13 yr (1,508.1 d)
Mean anomaly	73.755°
Mean motion	0° 14m 19.356s / day
Inclination	6.0824°
Longitude of ascending node	281.416°
Argument of perihelion	120.267°
Physical characteristics
Mean radius	20.90±1 km
Synodic rotation period	11.61624 h (0.484010 d)
Geometric albedo	0.2494±0.026
Absolute magnitude (H)	9.02

678 Fredegundis is a minor planet orbiting the Sun. It was discovered 22 January 1909 from Heidelberg by German astronomer K. Wilhelm Lorenz, and was named after the French opera Frédégonde. This object is orbiting at a distance of 2.57 AU with a period of 4.13 years and an eccentricity (ovalness) of 0.22. The orbital plane is inclined at an angle of 6.1° to the plane of the ecliptic

This appears to be an M-type asteroid in the Tholen classification and X-type in the Bus and Binzel system. It spans a girth of approximately 42 km and is spinning with a rotation period of 11.6201 hours. Radar observations suggest a bifurcated structure consistent with a contact binary.

References

1 2 "678 Fredegundis (1909 FS)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
↑ Schmadel, Lutz (2003), Dictionary of minor planet names, vol. 1, Springer, p. 66, ISBN 9783540002383.
↑ López-Sisterna, C.; et al. (June 2019), "Polarimetric survey of main-belt asteroids. VII. New results for 82 main-belt objects", Astronomy & Astrophysics, 626: 5, Bibcode:2019A&A...626A..42L, doi:10.1051/0004-6361/201935246, A42.

External links

Lightcurve plot of 678 Fredegundis, Palmer Divide Observatory, B. D. Warner (2008)
Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
678 Fredegundis at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
678 Fredegundis at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

This article about an asteroid native to the asteroid belt is a stub. You can help Wikipedia by adding missing information.

[jpldata-1] 1 2 "678 Fredegundis (1909 FS)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.

[Schmadel2003-2] Schmadel, Lutz (2003), Dictionary of minor planet names, vol. 1, Springer, p. 66, ISBN 9783540002383.

[López-Sisterna_et_al_2019-3] López-Sisterna, C.; et al. (June 2019), "Polarimetric survey of main-belt asteroids. VII. New results for 82 main-belt objects", Astronomy & Astrophysics, 626: 5, Bibcode:2019A&A...626A..42L, doi:10.1051/0004-6361/201935246, A42.