| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 4 October 1926 |
| Designations | |
| (1072) Malva | |
| Pronunciation | /ˈmælvə/[2] |
Named after | Malva(flowering plant)[3] |
| 1926 TA · 1949 UU | |
| main-belt · (outer)[4] background[5] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 91.08 yr (33,267 days) |
| Aphelion | 3.9291AU |
| Perihelion | 2.4010 AU |
| 3.1650 AU | |
| Eccentricity | 0.2414 |
| 5.63yr (2,057 days) | |
| 355.23° | |
| 0° 10m 30s / day | |
| Inclination | 8.0234° |
| 37.077° | |
| 25.996° | |
| Physical characteristics | |
| Dimensions | 44.97 km(derived)[4] 45.05±1.8 km[6] 47.48±0.87 km[7] 53.183±1.087 km[8] 53.675±0.343 km[9] |
| 9.0127±0.0003h[10] 10.080±0.005 h[11][a] | |
| 0.032±0.005[9] 0.0394±0.0050[8] 0.0458(derived)[4] 0.050±0.002[7] 0.0549±0.005[6] | |
| C(assumed)[4] | |
| 10.50[6][7][8] · 10.70[4][9] · 10.8[1] | |
1072 Malva, provisional designation1926 TA, is a dark backgroundasteroid from the outer regions of theasteroid belt, approximately 48 kilometers in diameter. It was discovered on 4 October 1926, by astronomerKarl Reinmuth at theHeidelberg-Königstuhl State Observatory in Germany.[12] The asteroid was named after the flowering plantMalva (mallow).[3]
Malva is a non-family asteroid from the main belt'sbackground population.[5] It orbits the Sun in theouter asteroid belt at a distance of 2.4–3.9 AU once every 5 years and 8 months (2,057 days;semi-major axis of 3.17 AU). Its orbit has aneccentricity of 0.24 and aninclination of 8° with respect to theecliptic.[1] The body'sobservation arc begins with its official discovery observation at Heidelberg in October 1926.[12]
Malva is an assumedC-type asteroid.[4]
Observations performed byBrian Warner at thePalmer Divide Observatory in Colorado Springs, Colorado, during 2007 produced alightcurve with a period of 10.080 ± 0.005 hours and a brightness range of 0.17 ± 0.02 inmagnitude (U=3).[11][a] Another lightcurve obtained by Italian amateur astronomers Roberto Crippa and Federico Manzini at the Sozzago Astronomical Station (A12) gave aperiod of 9.0127 hours with an amplitude of 0.17 magnitude (U=2).[10]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Malva measures between 45.05 and 53.675 kilometers in diameter and its surface has analbedo between 0.032 and 0.0549.[6][7][8][9]
TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.0458 and a diameter of 44.97 kilometers based on anabsolute magnitude of 10.7.[4]
Thisminor planet was named after the genus of flowering plants,Malva, also known as mallow. The official naming citation was mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 101).[3]
Due to his many discoveries,Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between(1009) and(1200), and also contained a sequence of 28 asteroids, starting with1054 Forsytia, that were all named after plants, in particularflowering plants(also see list of minor planets named after animals and plants).[13]
