1077 Campanula
Main-belt asteroid
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1077 Campanula, provisional designation 1926 TK, is a presumed Erigonian asteroid, approximately 9 kilometers (5.6 miles) in diameter, located in the inner region of the asteroid belt. It was discovered on 6 October 1926, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany.[14] The asteroid was named after the bellflower Campanula.[3]
_Campanula.png)
Shape model of Campanula from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 6 October 1926 |
| Designations | |
| (1077) Campanula | |
| Pronunciation | /kæmËpænjÊlÉ/[2] |
Named after | Campanula (bellflower)[3] |
| 1926 TK · 1957 AJ 1972 CB | |
| main-belt · (inner) Erigone[4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 90.56 yr (33,077 days) |
| Aphelion | 2.8655 AU |
| Perihelion | 1.9220 AU |
| 2.3938 AU | |
| Eccentricity | 0.1971 |
| 3.70 yr (1,353 days) | |
| 218.36° | |
| 0° 15m 57.96s / day | |
| Inclination | 5.3941° |
| 346.20° | |
| 13.591° | |
| Physical characteristics | |
| 7.55±1.72 km[5] 9±2 km[6] 9.709±0.278 km[7][8] | |
| 3.847±0.002 h[a] 3.850±0.001 h[9][10] 3.850486±0.000001 h[11] 3.85085±0.00005 h[6] 3.852±0.002 h[12] | |
Pole ecliptic latitude | |
| 0.225±0.017[7] 0.2253±0.0169[8] 0.33±0.12[5] | |
| S[4] VâR = 0.400±0.070[6] | |
| 12.3[14][1] | |
Classification and orbit
Campanula is considered to be a member of the Erigone family (406),[4] which is named after 163 Erigone, while other sources classify it as a background asteroid, not associated to any known asteroid family.[15][13] It orbits the Sun in the inner main-belt at a distance of 1.9â2.9 AU once every 3 years and 8 months (1,353 days). Its orbit has an eccentricity of 0.20 and an inclination of 5° with respect to the ecliptic.[1] The body's observation arc begins at Heidelberg, 2 months after its official discovery observation.[14]
Naming
This minor planet was named for the bellflower Campanula. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 102).[3]
Reinmuth's flowers
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). This list also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants).[16]
Physical characteristics
Campanula is an assumed stony S-type asteroid,[4] which is not in line with the darker C- and X-types seen among the Erigonian asteroids.[17]:â23â
Rotation period and poles
Several rotational lightcurves of Campanula were obtained from photometric observations. Lightcurve analysis gave a rotation period of 3.847 to 3.852 hours with a brightness variation of 0.24 to 0.40 magnitude (U=3-/3/3/3).[6][9][10][12][a] A 2016-published lightcurve, using modeled photometric data from the Lowell Photometric Database (LPD), gave a concurring period of 3.850486 hours (U=n.a.), as well as two spin axis of (178.0°, 76.0°) and (313.0°, 59.0°) in ecliptic coordinates (λ, β).[11]
Diameter and albedo
According to observations taken at the Balzaretto Observatory (A81) and the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Campanula measures between 7.55 and 9.709 kilometers in diameter and its surface has an albedo between 0.225 and 0.33.[5][6][7][8] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 9.40 kilometers based on an absolute magnitude of 12.50.[4]
See also
- List of minor planets named after animals and plants § Plants
