930 Westphalia information

930 Westphalia
Discovery
Discovered by	W. Baade
Discovery site	Bergedorf Obs.
Discovery date	10 March 1920
Designations
MPC designation	(930) Westphalia
Pronunciation	/wɛstˈfeɪliə/
Named after	Westphalia; (German region)
Alternative designations	A920 EE · 1920 GS; A916 DD · 1916 DD
Minor planet category	main-belt · (inner); background · slow
Orbital characteristics
	Epoch 31 May 2020 (JD 2459000.5)
	Uncertainty parameter 0
Observation arc	99.58 yr (36,370 d)
Aphelion	2.7792 AU
Perihelion	2.0828 AU
Semi-major axis	2.4310 AU
Eccentricity	0.1432
Orbital period (sidereal)	3.79 yr (1,384 d)
Mean anomaly	32.395°
Mean motion	0° 15m 36s / day
Inclination	15.336°
Longitude of ascending node	340.94°
Argument of perihelion	329.98°
Physical characteristics
Mean diameter	34.922±0.153 km; 36.48±1.4 km; 39.51±1.47 km;
Synodic rotation period	100.66±0.12 h
Geometric albedo	0.031±0.002; 0.0366±0.003; 0.040±0.007;
Spectral type	SMASS = Ch
Absolute magnitude (H)	11.2; 11.3;

930 Westphalia (prov. designation: A920 EE or 1920 GS) is a very dark background asteroid and a slow rotator from the inner regions of the asteroid belt, that measures approximately 36 kilometers (22 miles) in diameter. It was discovered on 10 March 1920, by German astronomer Walter Baade at the Bergedorf Observatory in Hamburg.^[1] The carbonaceous C-type asteroid (Ch) has an exceptionally long rotation period of 100.7 hours and is likely spherical in shape. It was named after Westphalia, a region in northwestern Germany.^[3]

^ ^a ^b ^c ^d Cite error: The named reference MPC-object was invoked but never defined (see the help page).
^ Noah Webster (1884) A Practical Dictionary of the English Language
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[MPC-object-1] Cite error: The named reference MPC-object was invoked but never defined (see the help page).

[2] Noah Webster (1884) A Practical Dictionary of the English Language

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

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

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

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

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

[Masiero-2014-8] Cite error: The named reference Masiero-2014 was invoked but never defined (see the help page).

[SIMPS-9] Cite error: The named reference SIMPS was invoked but never defined (see the help page).

[AKARI-10] Cite error: The named reference AKARI was invoked but never defined (see the help page).

[Alvarez-2015b-11] Cite error: The named reference Alvarez-2015b was invoked but never defined (see the help page).

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