1169 Alwine

1169 Alwine, provisional designation 1930 QH, is a Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 30 August 1930, by German and Italian astronomers Max Wolf and Mario Ferrero at Heidelberg Observatory in southwest Germany.^[5] Any reference of its name to a person is unknown.^[2]

1169 Alwine

Discovery[1]
Discovered by	M. F. Wolf M. Ferrero
Discovery site	Heidelberg Obs.
Discovery date	30 August 1930
Designations
MPC designation	(1169) Alwine
Named after	unknown[2]
Alternative designations	1930 QH · 1937 VH 1955 SK1 · 1955 SR1
Minor planet category	main-belt · (inner) Flora[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	86.77 yr (31,691 days)
Aphelion	2.6775 AU
Perihelion	1.9599 AU
Semi-major axis	2.3187 AU
Eccentricity	0.1547
Orbital period (sidereal)	3.53 yr (1,290 days)
Mean anomaly	155.85°
Mean motion	0° 16m 45.12s / day
Inclination	4.0522°
Longitude of ascending node	255.08°
Argument of perihelion	177.29°
Physical characteristics
Dimensions	7.893±0.185 km[4]
Geometric albedo	0.179±0.024[4]
Absolute magnitude (H)	12.8[1]

Orbit and classification

Alwine is a member of the Flora family (402),^[3] a giant asteroid family and the largest family of stony asteroids in the main belt.^[6]: 23 It orbits the Sun in the inner asteroid belt at a distance of 2.0–2.7 AU once every 3 years and 6 months (1,290 days; semi-major axis of 2.32 AU). Its orbit has an eccentricity of 0.15 and an inclination of 4° with respect to the ecliptic.^[1] As no precoveries were taken, and no prior identifications were made, Alwine's observation arc begins with its official discovery observation at Heidelberg in August 1930.^[5]

Physical characteristics

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Alwine measures 7.89 kilometers in diameter, and its surface has an albedo of 0.179.^[4] Based on a generic magnitude-to-diameter conversion, its diameter is between 7 and 17 kilometers for an absolute magnitude of 12.8 and an albedo in the range of 0.05 to 0.25.^[7]

Lightcurve

As of 2017, no rotational lightcurves have been obtained. The body's rotation period, pole and shape remain unknown.^[1][8]

Naming

This minor planet is named after a common German female name. Any reference of this name to a person or occurrence is unknown.^[2]

Unknown meaning

Among the many thousands of named minor planets, Alwine is one of 120 asteroids, for which no official naming citation has been published. All of these low-numbered asteroids have numbers between 164 Eva and 1514 Ricouxa and were discovered between 1876 and the 1930s, predominantly by astronomers Auguste Charlois, Johann Palisa, Max Wolf and Karl Reinmuth.^[9]