Sich-1

{{Short description|Ukrainian Earth observation satellite}}

{{Expand language|topic=|langcode=uk|otherarticle=Січ-1|date=November 2023}}

{{Use British English|date=January 2013}}

{{Use dmy dates|date=January 2023}}

{{Infobox spaceflight

| name = Sich-1

| image = Stamp of Ukraine s117.jpg

| image_size = 165px

| image_caption =

| mission_type = Earth observation

| operator =

| website =

| COSPAR_ID = 1995-046A

| SATCAT = 23657

| mission_duration =

| spacecraft_type = Okean-O1

| manufacturer = Yuzhmash

| dry_mass =

| launch_mass = {{convert|1915|kg}}

| power =

| launch_date = {{start-date|31 August 1995, 06:49:59|timezone=yes}} UTC

| launch_rocket = Tsyklon-3

| launch_site = Plesetsk 32/2

| launch_contractor =

| entered_service =

| disposal_type =

| deactivated = 2001

| orbit_epoch = 21 August 1995, 02:49:59 UTC{{Cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1995-046A|title=NASA – NSSDCA – Spacecraft – Trajectory Details|website=nssdc.gsfc.nasa.gov|access-date=2018-05-02}}

| orbit_reference = Geocentric

| orbit_regime = Low Earth

| orbit_eccentricity = 0.0022

| orbit_periapsis = {{convert|659|km}}

| orbit_apoapsis = {{convert|683|km}}

| orbit_inclination = 82.3 degrees

| orbit_period = 98.7 minutes

| orbit_longitude =

| apsis = gee

| trans_band =

| trans_frequency =

| trans_capacity =

| trans_coverage =

| trans_TWTA =

| trans_EIRP =

| trans_HPBW =

}}

Sich-1 was the first Ukrainian Earth observation satellite and was launched on 31 August 1995 at 06:49:59 UTC by Ukrainian Tsyklon-3 rocket from Plesetsk Cosmodrome in Russia.{{cite web|url=http://myweb.tiscali.co.uk/wxsatellite/sich.htm|title=SICH-1 Image Page|website=Myweb Tiscali|accessdate=16 August 2017|archive-date=11 October 2012|archive-url=https://web.archive.org/web/20121011022457/http://myweb.tiscali.co.uk/wxsatellite/sich.htm|url-status=dead}}{{cite web |url=http://leshamilton.co.uk/sich.htm |title=SICH-1 Image Page |website=Leshamilton|accessdate=16 August 2017}} It operated until 2001.

In this launch also was launched the first satellite of Chile, FASat-Alfa, that failed to deattach from Sich-1. Nevertheless this was the first attempt to Chile to reach to space