| Discovery[1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 19 March 1930 |
| Designations | |
| (1164) Kobolda | |
Named after | Hermann Kobold (German astronomer)[2] |
| 1930 FB | |
| main-belt · (inner) Phocaea[3][4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 87.01 yr (31,782 days) |
| Aphelion | 2.7574AU |
| Perihelion | 1.8543 AU |
| 2.3059 AU | |
| Eccentricity | 0.1958 |
| 3.50yr (1,279 days) | |
| 15.684° | |
| 0° 16m 53.4s / day | |
| Inclination | 25.190° |
| 156.96° | |
| 341.25° | |
| Physical characteristics | |
| Dimensions | 5.79±0.37 km[5] 6.34±1.15 km[6] 7.63 km(calculated)[3] 7.651±0.064 km[7] 8.751±0.066 km[8] |
| 4.141±0.002h[9] 4.142±0.001 h[10] 4.150±0.005 h[a] 4.154±0.011 h[11] | |
| 0.1754±0.0253[8] 0.229±0.022[7] 0.23(assumed)[3] 0.32±0.15[6] 0.405±0.056[5] | |
| S[3] | |
| 12.80[1][3][5][6][8] | |
1164 Kobolda, provisional designation1930 FB, is a stony Phocaeaasteroid from the inner regions of theasteroid belt, approximately 7 kilometers in diameter. Discovered byKarl Reinmuth atHeidelberg Observatory in 1930, the asteroid was later named after German astronomerHermann Kobold.
Kobolda was discovered on 19 March 1930, by German astronomerKarl Reinmuth at theHeidelberg-Königstuhl State Observatory in southwest Germany.[12] On the following night, it was independently discovered byWalter Baade at theBergedorf Observatory in Hamburg.[2] TheMinor Planet Center, however, only acknowledges the first discoverer.[12]
Kobolda is a member of thePhocaea family (701), which is a stonyfamily of nearly 2,000 known members, named after the family's parent body25 Phocaea.[3][4][13]: 23
This asteroid orbits the Sun in theinner main-belt at a distance of 1.9–2.8 AU once every 3 years and 6 months (1,279 days). Its orbit has aneccentricity of 0.20 and aninclination of 25° with respect to theecliptic.[1] The body'sobservation arc begins with its official discovery observation at Heidelberg in 1930.[12]
Kobolda is an assumed stonyS-type asteroid,[3] which concurs with the overallspectral type of the Phocaea family.[13]: 23
Several rotationallightcurves ofKobolda have been obtained from photometric observations since 2007. Lightcurve analysis gave a well-definedrotation period between 4.141 and 4.154 hours with a brightness amplitude of 0.21 to 0.30magnitude (U=3/3/3/2).[9][10][11][a]
According to the surveys carried out by the JapaneseAkari satellite and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Kobolda measures between 5.79 and 8.751 kilometers in diameter and its surface has analbedo between 0.1754 and 0.405.[5][6][7][8]
TheCollaborative Asteroid Lightcurve Link assumes an albedo of 0.23 (derived from25 Phocaea) and calculates a diameter of 7.63 kilometers based on anabsolute magnitude of 12.8.[3]
Thisminor planet was named afterHermann Kobold (1858–1942), a German astronomer at theUniversity of Kiel and long-time editor of the astronomy journalAstronomical Notes (German:Astronomische Nachrichten, after which(1155) was named). The official naming citation was mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 108).[2]
WerePluto categorized as a minor planet when discovered in early 1930, shortly before1164 Kobolda, the number(1164) could have been assigned to Pluto.[original research?] However, these assumptions are only speculative as there is generally only a slight correlation between the discovery date of a minor planet and its final number.[14] Another proposed number for Pluto was(10000), with the idea that (10001) and (10002) would be given to thefirst andsecond discovered Kuiper belt object. However the proposal met "stiff resistance" and the number was assigned to10000 Myriostos instead.[15][16]: 35 Eventually, Pluto was given the number(134340).
