| Discovery [1] | |
|---|---|
| Discovered by | E. Delporte |
| Discovery site | Uccle Obs. |
| Discovery date | 15 November 1930 |
| Designations | |
| (3567) Alvema | |
Named after | (great-granddaughters of the discoverer)[2] |
| 1930 VD · 1930 XO 1930 XQ · 1967 SB 1972 VN1 · 1972 XC2 1972 YD1 · 1978 EP4 | |
| main-belt · (middle) | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.53 yr (31,606 days) |
| Aphelion | 3.6551AU |
| Perihelion | 1.9157 AU |
| 2.7854 AU | |
| Eccentricity | 0.3122 |
| 4.65yr (1,698 days) | |
| 238.05° | |
| 0° 12m 43.2s / day | |
| Inclination | 6.8229° |
| 270.99° | |
| 138.24° | |
| Physical characteristics | |
| Dimensions | 13.832±0.084 km[3] 13.98 km(calculated)[4] 14.531±0.076 km[5] |
| 8.1216±0.0001h[6] 8.13±0.01 h[7] | |
| 0.031±0.002[3] 0.0467±0.0015[5] 0.057(assumed)[4] | |
| SMASS = Xc [1] P [5] · X [4] | |
| 12.5[5] · 13.0[1][4] · 13.36±0.04[8] | |
3567 Alvema, provisional designation1930 VD, is a darkasteroid from the middle region of theasteroid belt, approximately 14 kilometers in diameter. It was discovered by Belgian astronomerEugène Delporte at theRoyal Observatory of Belgium in Uccle, on 15 November 1930.[9] It was named after the discoverer's three great-granddaughters Aline, Vérionique and Martine.[2]
Alvema orbits the Sun in thecentral main-belt at a distance of 1.9–3.7 AU once every 4 years and 8 months (1,698 days). Its orbit has aneccentricity of 0.31 and aninclination of 7° with respect to theecliptic.[1] Noprecoveries were taken prior to its discovery.[9]
TheX-type asteroid is classified as a Xc-subtype on theSMASS taxonomic scheme,[1] while theNEOWISE mission of NASA's space-basedWide-field Infrared Survey Explorer groups it into theP-type spectral class.[5]
In December 2014, a rotationallightcurve ofAlvema was obtained from photometric observations by French amateur astronomerLaurent Bernasconi. It gave arotation period of8.13±0.01 with a brightness variation of 0.33magnitude (U=2+).[7] The asteroid's first lightcurve was reported by astronomer Darryl Sergison at the Gothers Observatory (J03) in the United Kingdom, from observations made in November 2009, showing a period of8.1216±0.0001 hours with an amplitude of 0.17 magnitude (U=2).[6]
According to the survey carried out by NEOWISE,Alvema measures 13.8 and 14.5 kilometers in diameter and its surface has a lowalbedo of 0.031 and 0.047, respectively,[3][5] while theCollaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 14.0 kilometers.[4]
Thisminor planet was named by the discoverer after Aline, Vérionique and Martine (Al-Ve-Ma), his three great-granddaughters, Aline De Middlelaer, and Vérionique and Martine Wark.[2] The official naming citation was published by theMinor Planet Center on 9 September 1995 (M.P.C. 25652).[10]
