Senta (minor planet designation: 550 Senta) is a minor planet orbiting the Sun that was discovered by German astronomer Max Wolf on 16 November 1904, from Heidelberg.

550 Senta

A three-dimensional model of 550 Senta based on its light curve
Discovery
Discovered by	Max Wolf
Discovery site	Heidelberg
Discovery date	16 November 1904
Designations
MPC designation	(550) Senta
Pronunciation	German: [ˈzɛntaː]
Alternative designations	1904 PL
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	115.33 yr (42124 d)
Aphelion	3.1653 AU (473.52 Gm)
Perihelion	2.0115 AU (300.92 Gm)
Semi-major axis	2.5884 AU (387.22 Gm)
Eccentricity	0.22287
Orbital period (sidereal)	4.16 yr (1521.1 d)
Mean anomaly	17.4133°
Mean motion	0° 14m 12.012s / day
Inclination	10.108°
Longitude of ascending node	270.702°
Argument of perihelion	45.342°
Physical characteristics
Mean radius	18.875±1.9 km
Synodic rotation period	20.555 h (0.8565 d)[1][2]
Geometric albedo	0.2215±0.052
Absolute magnitude (H)	9.37

Photometric observations of this asteroid made at the Torino Observatory in Italy during 1990–1991 were used to determine a synodic rotation period of 20.555 ± 0.01 hours.[2]

In light of Max Wolf's propensity around the time of discovery to name asteroids after operatic heroines, it is likely that the asteroid is named after Senta, the heroine of Richard Wagner's opera The Flying Dutchman.^{[citation needed]}

References

External links

• 550 Senta at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 550 Senta at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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