| Discovery[1] | |
|---|---|
| Discovered by | E. Delporte |
| Discovery site | Uccle Obs. |
| Discovery date | 8 September 1932 |
| Designations | |
| (1707) Chantal | |
Named after | Niece of astronomer Georges Roland[1] |
| 1932 RL · 1942 TC 1950 BF1 · 1955 QA1 A906 YJ | |
| main-belt[1][2] · (inner) background[3][4] | |
| Orbital characteristics[2] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 111.83yr (40,847 d) |
| Aphelion | 2.5989AU |
| Perihelion | 1.8390 AU |
| 2.2189 AU | |
| Eccentricity | 0.1712 |
| 3.31 yr (1,207 d) | |
| 37.923° | |
| 0° 17m 53.52s / day | |
| Inclination | 4.0315° |
| 6.1128° | |
| 42.974° | |
| Physical characteristics | |
| 7.459±0.114 km[5][6] 7.578±0.291 km[7] 7.62±1.37 km[8] | |
| 10 h(at least)[9] | |
| 0.28[8] 0.2969[7] 0.306[6][5] | |
| Tholen =S[2][10] B–V = 0.870[2] U–B = 0.530[2] | |
| 12.54[1][2][5][7][10] 12.79[8] | |
1707 Chantal, provisional designation1932 RL, is a stony backgroundasteroid from the Florian region in the innerasteroid belt, approximately 7.5 kilometers (4.7 miles) in diameter. It was discovered on 8 September 1932, by astronomerEugène Delporte at theRoyal Observatory of Belgium in Uccle.[1] TheS-type asteroid has arotation period of at least 10 hours.[10] It was named for Chantal, the niece of Belgian astronomer Georges Roland.[1]
According to modernHCM-analyses byNesvorný, as well as byMilani andKnežević,Chantal is a non-family asteroid from the main belt'sbackground population.[3][4] In an older HCM-analysis (Zappalà (1990–97), it is a member of theFlora family (402), a giantasteroid family and the largest family of stony asteroids in the main-belt.[3] It orbits the Sun in theinner asteroid belt at a distance of 1.8–2.6 AU once every 3 years and 4 months (1,207 days;semi-major axis of 2.22 AU). Its orbit has aneccentricity of 0.17 and aninclination of 4° with respect to theecliptic.[2] The asteroid was first observed asA906 YJ at theHeidelberg Observatory in December 1906. The body'sobservation arc begins atUccle Observatory in October 1932, or seven weeks after its official discovery observation.[1]
Thisminor planet was named by the discovererEugène Delporte after Chantal, a niece of Belgian astronomerGeorges Roland (1922–1991) of Uccle and co-discoverer of theComet Arend–Roland.[1] The official naming citation was published by theMinor Planet Center on 8 April 1982 (M.P.C. 6832).[11] Asteroid1711 Sandrine was also named by the discoverer after a (grand)-niece of Roland.
In theTholen classification,Chantal is a common, stonyS-type asteroid.[2][3]
In October 1975, a rotationallightcurve ofChantal was obtained fromphotometric observations by Swedish astronomerClaes-Ingvar Lagerkvist at theUppsala Astronomical Observatory. Analysis of the fragmentary lightcurve gave arotation period of at least10 hours with a brightness amplitude of more than 0.2magnitude (U=1).[9]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Chantal measures between 7.46 and 7.62 kilometers in diameter and its surface has analbedo between 0.28 and 0.31.[5][6][7][8] TheCollaborative Asteroid Lightcurve Link assumes a standard albedo for a stony asteroid of 0.20 and calculates a diameter of 9.23 kilometers based on anabsolute magnitude of 12.54.[10]
