1711 Sandrine

1711 Sandrine, provisional designation 1935 BB, is a stony Eoan asteroid from the outer region of the asteroid belt, approximately 23 kilometers in diameter.

1711 Sandrine

Discovery[1]
Discovered by	E. Delporte
Discovery site	Uccle Obs.
Discovery date	29 January 1935
Designations
MPC designation	(1711) Sandrine
Named after	(grand-niece of astronomer) Georges Roland[2]
Alternative designations	1935 BB · 1938 SF1 1943 QE · 1949 WF 1951 CX1 · 1952 HG1 1956 AH · 1956 AW 1956 DC · 1959 TR 1959 UH · A909 DJ
Minor planet category	main-belt · (outer) Eos[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	107.82 yr (39,380 days)
Aphelion	3.3596 AU
Perihelion	2.6666 AU
Semi-major axis	3.0131 AU
Eccentricity	0.1150
Orbital period (sidereal)	5.23 yr (1,910 days)
Mean anomaly	5.6639°
Mean motion	0° 11m 18.24s / day
Inclination	11.095°
Longitude of ascending node	134.78°
Argument of perihelion	251.25°
Physical characteristics
Dimensions	22.929±0.364 km[4]
Geometric albedo	0.133±0.011[4]
Spectral type	Tholen = S[1] B–V = 0.855[1] U–B = 0.447[1]
Absolute magnitude (H)	11.01[1]

This asteroid was discovered on 29 January 1935, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle.^[5] It was named after the grand-niece of astronomer Georges Roland.^[2]

Classification and orbit

Sandrine is a member of the Eos family (606), the largest asteroid family in the outer main belt consisting of nearly 10,000 asteroids.^[3][6]: 23 It orbits the Sun in the outer main-belt at a distance of 2.7–3.4 AU once every 5 years and 3 months (1,910 days). Its orbit has an eccentricity of 0.12 and an inclination of 11° with respect to the ecliptic.^[1] The body's observation arc begins with its official discovery observation. Its first observation at Heidelberg in 1909, when it was identified as A909 DJ, has been discarded.^[5]

Physical characteristics

In the Tholen classification, Sandrine is characterized as a common S-type asteroid.^[1]

Diameter and albedo

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Sandrine measures 22.93 kilometers in diameter, and its surface has an albedo of 0.133.^[4] It has an absolute magnitude of 11.01.^[1]

Lightcurves

As of 2017, Sandrine's rotation period and shape remain unknown.^[1]

Naming

This minor planet was named after Sandrine, a grand-niece of Georges Roland, astronomer at Uccle and co-discoverer of Comet Arend–Roland. Delporte also named 1707 Chantal and 1848 Delvaux after family members of his collaborator.^[2] The official naming citation was published by the Minor Planet Center on 8 April 1982 (M.P.C. 6832).^[7]