780 Armenia

{{Use dmy dates|date=October 2019}}

{{Infobox planet

| minorplanet= yes

| background= #D6D6D6

| name= 780 Armenia

| mpc_name= (780) Armenia

| alt_names= 1914 UC

| pronounced= {{IPAc-en|ɑːr|'|m|iː|i|ə}}Noah Webster (1884) A Practical Dictionary of the English Language

| discoverer= G. N. Neujmin

| discovered= 25 January 1914

| discovery_site= Simeiz Observatory

| epoch= 31 July 2016 (JD 2457600.5)

| orbit_ref=

| eccentricity= 0.097135

| semimajor= {{Convert|3.1144|AU|Gm|abbr=on}}

| perihelion= {{Convert|2.8119|AU|Gm|abbr=on}}

| aphelion= {{Convert|3.4169|AU|Gm|abbr=on|lk=on}}

| period= 5.50 yr (2007.5 d)

| inclination= 19.085°

| asc_node= 144.857°

| arg_peri= 214.403°

| mean_anomaly= 346.438°

| mean_motion= {{Deg2DMS|0.17932|sup=ms}} / day

| observation_arc= 107.14 yr (39134 d)

| uncertainty= 0

| abs_magnitude= 9.00

| rotation= {{Convert|19.891|h|d|abbr=on|lk=on}}

| albedo= {{val|0.0498|0.002}}

| mean_radius= {{val|47.20|0.85}} km

}}

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 {{val|3.11|ul=AU}} with an eccentricity of 0.097 and a period of {{convert|2007.5|days|years|2|disp=out}}. The orbital plane is inclined at an angle of 19.1° to the plane of rotation. 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 {{val|19.891|0.002|u=hours}} and a brightness amplitude of {{val|0.18|0.03}} in magnitude.

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.