_Delvaux.png) Shape model ofDelvaux from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | E. Delporte |
| Discovery site | Uccle Obs. |
| Discovery date | 18 August 1933 |
| Designations | |
| (1848) Delvaux | |
Named after | (sister-in-law of) Georges Roland[2] |
| 1933 QD · 1936 DH 1948 SF · 1948 SK 1951 GV · 1952 ML 1953 TU1 · 1953 VE1 1956 GL · 1972 QN 1975 FV · A912 FA | |
| main-belt · Koronis[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 83.47 yr (30,486 days) |
| Aphelion | 3.0019AU |
| Perihelion | 2.7407 AU |
| 2.8713 AU | |
| Eccentricity | 0.0455 |
| 4.87yr (1,777 days) | |
| 138.35° | |
| 0° 12m 9.36s / day | |
| Inclination | 1.4404° |
| 331.66° | |
| 316.61° | |
| Physical characteristics | |
| Dimensions | 16.66±1.95 km[4] 17.030±0.114[5] 17.12 km(calculated)[3] 17.446±0.143 km[6] 17.51±0.63 km[7] |
| 3.637h(adopted)[3] 3.638±0.001 h[8] 3.639±0.001 h[9] 3.639±0.001 h[10] 3.65±0.01 h[8] | |
| 0.2329±0.0432[6] 0.24(assumed)[3] 0.242±0.036[5] 0.255±0.020[7] 0.461±0.316[4] | |
| SMASS =S[1] · S[3] | |
| 10.35[4] · 10.90[7] · 11.0[1][3][6] · 11.24±0.10[10] · 11.26±0.40[11] | |
1848 Delvaux (prov. designation:1933 QD) is a stonyKoronis asteroid from the outer region of theasteroid belt, approximately 17 kilometers in diameter. It was discovered on 18 August 1933, by Belgian astronomerEugène Delporte at theRoyal Observatory of Belgium in Uccle, Belgium.[12] It was later named after astronomerGeorges Roland's sister-in-law.[2]
Delvaux is a stony asteroid and a member of theKoronis family, a collisional group consisting of a few hundred known bodies with nearlyecliptical orbits. It orbits the Sun in theouter main-belt at a distance of 2.7–3.0 AU once every 4 years and 10 months (1,777 days). Its orbit has aneccentricity of 0.05 and aninclination of 1° with respect to the ecliptic.[1] First identified asA912 FA atSimeiz Observatory in 1912, the body's observation arc begins 3 day after its official discovery, as non of the previous observations were used.[12]
In theSMASS taxonomyDelvaux is a commonS-type asteroid.[2]
It has a well-determinedrotation period of 3.63 to 3.65 hours with a brightness variation of 0.57–0.69magnitude (U=3/3/3/3).[8][9][10] TheCollaborative Asteroid Lightcurve Link (CALL) adopts a period of 3.637 hours.[3]
According to the surveys carried out by the JapaneseAkari satellite and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Delvaux measures between 16.66 and 17.51 kilometers in diameter, and its surface has analbedo of 0.233 to 0.461.[4][5][6][7] CALL assumes a standard albedo for members of the Koronis family of 0.24, and calculates a diameter of 17.12 kilometers with anabsolute magnitude of 11.0.[3]
Thisminor planet was named after the sister-in-law of Georges Roland, astronomer at the observatory in Uccle and known as the co-discoverer of thecomet Arend–Roland.[2] The approved naming citation was published by theMinor Planet Center on 8 April 1982 (M.P.C. 6832).[13]
