IRNSS-1E

{{Use dmy dates|date=March 2020}}

{{use Indian English|date=January 2014}}

{{Infobox spaceflight

| name = PSLV-C31/IRNSS-1E

| names_list =

| image =

| image_caption =

| image_alt =

| image_size =

| mission_type = Navigation

| operator = ISRO

| COSPAR_ID = 2016-003A[https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2016-003A NASA Space Science Data Coordinated Archive]

| SATCAT = 41241{{cite web|url=http://www.celestrak.com/cgi-bin/TLE.pl?CATNR=41241|title=IRNSS TLE|publisher=celestrak.org|access-date=November 20, 2022}}

| website = http://www.isro.gov.in/Spacecraft/irnss-1e

| mission_duration = 12 years

| spacecraft = IRNSS-1E

| spacecraft_type = Satellite

| spacecraft_bus = I-1K

| manufacturer = ISRO Satellite Centre
Space Applications Centre

| dry_mass = {{convert|598|kg|lb}}

| launch_mass = {{convert|1425|kg|lb}}

| power = 1660 W

| launch_date = {{start date|df=yes|2016|01|20|09|31|00|7=Z}}

| launch_rocket = PSLV-C31

| launch_site = Satish Dhawan Second{{Cite web|title = PSLV-C31/IRNSS-1E - ISRO|url = http://www.isro.gov.in/launcher/pslv-c31-irnss-1e|website = isro.gov.in|access-date = 12 January 2016|archive-date = 14 January 2016|archive-url = https://web.archive.org/web/20160114231433/http://www.isro.gov.in/launcher/pslv-c31-irnss-1e|url-status = dead}}

| launch_contractor = ISRO

| disposal_type =

| deactivated =

| last_contact =

| decay_date =

| orbit_epoch =

| orbit_reference = Geocentric

| orbit_regime = Geosynchronous

| orbit_periapsis =

| orbit_apoapsis =

| orbit_inclination = 28.09°{{cite web |url=http://www.isro.gov.in/irnss-programme/towards-self-reliance-navigation-irnss |title=Towards Self Reliance in Navigation-IRNSS |publisher=ISRO |url-status=dead |archive-url=https://web.archive.org/web/20160310163951/http://www.isro.gov.in/irnss-programme/towards-self-reliance-navigation-irnss |archive-date=10 March 2016 }}

| orbit_period =

| orbit_longitude = 111.75°E

| apsis =

| programme = NavIC

| previous_mission = IRNSS-1D

| next_mission = IRNSS-1F

| insignia =

| insignia_caption =

| insignia_alt =

| insignia_size =

}}

IRNSS-1E is the fifth out of seven in the Indian Regional Navigational Satellite System (IRNSS) series of satellites after IRNSS-1A, IRNSS-1B, IRNSS-1C and IRNSS-1D. It is one among the seven of the IRNSS constellation of satellites launched to provide navigational services to the region. The satellite was placed in geosynchronous orbit.{{cite web|url=http://space.skyrocket.de/doc_sdat/irnss.htm|title=IRNSS |publisher=space.skyrocket.de |access-date=6 December 2014}} IRNSS-1E has been successfully launched into orbit on 20 January 2016{{cite news|url=https://www.deccanchronicle.com/science/200116/isro-chairman-congratulates-team-on-successful-launch.html|title=Deccan chronicle ISRO chairman congratulates team on successful launch}}{{cite news|url=http://www.business-standard.com/article/current-affairs/successful-commercial-launches-boost-isro-s-reputation-in-2015-115122900399_1.html|title=Successful commercial launches boost ISRO's reputation in 2015 |newspaper=Business Standard India |date=29 December 2015 |access-date=30 December 2015}} In 2025, IRNSS-1E was planned to be replaced at its orbital slot of 111.75ºE by NVS-02.{{Cite news |last=C.S |first=Hemanth |date=2025-01-29 |title=ISRO successfully launches NVS-02 satellite; creates history with the 100th launch from Sriharikota |url=https://www.thehindu.com/sci-tech/isro-successfully-launches-nvs-02-satellite/article69153254.ece |access-date=2025-02-02 |work=The Hindu |language=en-IN |issn=0971-751X}} However, following the failure of NVS-02, IRNSS-1E will countinue to remain at its slot.{{Cite web |title=ISRO's Latest Mission Hits A Hurdle, Satellite Faces Technical Glitch |url=https://www.ndtv.com/india-news/isro-100th-mission-hits-a-hurdle-satellite-faces-technical-glitch-7618493 |access-date=2025-02-02 |website=www.ndtv.com |language=en}}