ITF-1

{{refimprove|date=January 2015}}

{{Infobox spaceflight

| name = ITF-1

| image =

| image_caption =

| insignia =

| mission_type = Amateur radio

| operator = Tsukuba University

| website = [http://yui.kz.tsukuba.ac.jp/?lang=en yui.kz.tsukuba.ac.jp]

| COSPAR_ID = 2014-009B

| SATCAT = 39573

| mission_duration =

| spacecraft_type = 1U CubeSat

| manufacturer = Tsukuba University

| launch_mass = {{convert|1.3|kg|lb}}

| power =

| launch_date = {{start-date|27 February 2014, 18:37|timezone=yes}} UTC{{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|first=Jonathan|last=McDowell|author-link=Jonathan McDowell|work=Jonathan's Space Page|access-date=1 January 2015}}

| launch_rocket = H-IIA 202

| launch_site = Tanegashima Yoshinobu 1

| launch_contractor = Mitsubishi

| decay_date = {{end-date|29 June 2014}}

| orbit_epoch = 28 February 2014{{cite web|url=http://planet4589.org/space/log/satcat.txt|title=Satellite Catalog|first=Jonathan|last=McDowell|work=Jonathan's Space Page|access-date=1 January 2015}}

| orbit_reference = Geocentric

| orbit_regime = Low Earth

| orbit_periapsis = {{convert|382|km|mi}}

| orbit_apoapsis = {{convert|391|km|mi}}

| orbit_inclination = 65 degrees

| orbit_period = 92.28 minutes

| apsis = gee

}}

ITF-1, also known as Yui, was an amateur radio cubesat built by Tsukuba University of Japan.

It had a size of 100x100x100mm (without antenna) and was built around a standard 1U cubesat bus. The satellite's primary purpose was the raising awareness of space by providing an easily decoded signal to amateur radio receivers. ITF-1's mission was unsuccessful; no signal from the spacecraft was ever received, and it reentered Earth's atmosphere on 29 June 2014.