Astronomy:780 Armenia
| Discovery | |
|---|---|
| Discovered by | G. N. Neujmin |
| Discovery site | Simeiz Observatory |
| Discovery date | 25 January 1914 |
| Designations | |
| (780) Armenia | |
| Pronunciation | /ɑːrˈmiːiə/[1] |
| 1914 UC | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 107.14 yr (39134 d) |
| |{{{apsis}}}|helion}} | 3.4169 astronomical unit|AU (511.16 Gm) |
| |{{{apsis}}}|helion}} | 2.8119 AU (420.65 Gm) |
| 3.1144 AU (465.91 Gm) | |
| Eccentricity | 0.097135 |
| Orbital period | 5.50 yr (2007.5 d) |
| Mean anomaly | 346.438° |
| Mean motion | 0° 10m 45.552s / day |
| Inclination | 19.085° |
| Longitude of ascending node | 144.857° |
| 214.403° | |
| Physical characteristics | |
| Mean radius | 47.20±0.85 km |
| Rotation period | 19.891 h (0.8288 d) |
| Geometric albedo | 0.0498±0.002 |
| Absolute magnitude (H) | 9.00 |
780 Armenia is a minor planet in the asteroid belt orbiting the Sun. It is named after the Kingdom of Armenia, now Armenia. This object is orbiting at a distance of 3.11 astronomical unit|AU with an eccentricity of 0.097 and a period of 5.50 yr. The orbital plane is inclined at an angle of 19.1° to the plane of rotation.[2] This asteroid spans a girth of ~94 km. The long rotation period of this asteroid necessitated light curve data from more than one latitude. The overlapping data provided a solution with a period of 19.891±0.002 h and a brightness amplitude of 0.18±0.03 in magnitude.[3]
This object is the namesake of the Armenia family, a family of 13–76 asteroids that share similar spectral properties and orbital elements; hence they may have arisen from the same collisional event. All members have a relatively high orbital inclination.[4]
References
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ 2.0 2.1 Yeomans, Donald K., "780 Armenia", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=780, retrieved 5 May 2016.
- ↑ Benishek, Vladimir; Pilcher, Frederick (October 2009), "Period Determination of 780 Aremenia: an Inter-Longitude Collaboration", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 36 (4): 167–168, Bibcode: 2009MPBu...36..167B.
- ↑ Novaković, Bojan et al. (November 2011), "Families among high-inclination asteroids", Icarus 216 (1): pp. 69–81, doi:10.1016/j.icarus.2011.08.016, Bibcode: 2011Icar..216...69N.
External links
- Discovery Circumstances: Numbered Minor Planets
- 780 Armenia at AstDyS-2, Asteroids—Dynamic Site
- 780 Armenia at the JPL Small-Body Database
 |  |
