TanSat

{{short description|Chinese observation satellite}}

{{EngvarA|date=December 2020}}

{{Use dmy dates|date=March 2021}}

{{Infobox spaceflight |auto=all

| name = TanSat

| names_list = CarbonSat

| image =

| image_caption =

| image_size =

| mission_type = Earth observation

| operator = MOST

| COSPAR_ID = 2016-081A

| SATCAT = 41898

| website =

| mission_duration = Planned: 3 years
Elapsed: {{time interval|21 December 2016 19:22|show=ymd|sep=,}}

| manufacturer = SIMIT{{cite web |url=https://directory.eoportal.org/web/eoportal/satellite-missions/t/tansat |title=TanSat |work=eoPortal |publisher=European Space Agency |access-date=12 February 2017}}

| launch_mass = {{convert|620|kg|lb|abbr=on}}

| dry_mass = {{convert|610|kg|lb|abbr=on}}

| dimensions = {{convert|150|xx|180|xx|185|cm|in|abbr=on}}

| power =

| launch_date = {{start-date|21 December 2016, 19:22}} UTC{{cite news |url=http://english.gov.cn/news/top_news/2016/12/22/content_281475522238423.htm |title=China launches satellite to monitor global carbon emissions |agency=Xinhua |date=22 December 2016 |access-date=12 February 2017}}

| launch_rocket = Long March 2D{{cite news |url=https://www.nasaspaceflight.com/2016/12/long-march-2d-tansat-spacecraft/ |title=Long March 2D launches TanSat carbon dioxide monitoring spacecraft |work=NASA Spaceflight |first=Rui C. |last=Barbosa |date=21 December 2016 |access-date=12 February 2017}}

| launch_site = Jiuquan LC43/603

| launch_contractor = CASC

| entered_service =

| disposal_type =

| deactivated =

| destroyed =

| last_contact =

| decay_date =

| orbit_reference = Geocentric

| orbit_regime = Low Earth

| orbit_semimajor = {{convert|7083|km|mi|abbr=on}}

| orbit_eccentricity = 0.002272

| orbit_periapsis = {{convert|688.9|km|mi|abbr=on}}

| orbit_apoapsis = {{convert|721.1|km|mi|abbr=on}}

| orbit_inclination = 98.16°

| orbit_period = 98.89 minutes

| orbit_epoch = 12 February 2017, 19:47:39 UTC{{cite web |url=http://heavens-above.com/orbit.aspx?satid=41898 |title=Object A - Orbit |work=Heavens Above |date=12 February 2017 |access-date=12 February 2017}}

| apsis = gee

| instruments_list = {{Infobox spaceflight/Instruments

| acronym1 = CDS | name1 = Carbon Dioxide Spectrometer

| acronym2 = CAPI | name2 = Cloud and Aerosol Polarimetry Imager

}}

}}

TanSat, also known as CarbonSat, is a Chinese Earth observation satellite dedicated to monitoring carbon dioxide in Earth's atmosphere. It is generally classified as a minisatellite, and is the first dedicated carbon mission of the Chinese space program. The mission was formally proposed in 2010, and work began in January 2011. It is funded by the Ministry of Science and Technology (MOST) and was built by the Shanghai Institute of Microsystem And Information Technology (SIMIT).

TanSat carries two instruments: the Carbon Dioxide Spectrometer and the Cloud and Aerosol Polarimetry Imager. The Carbon Dioxide Spectrometer (CDS), also called CarbonSpec, is a high-resolution grating spectrometer which measures {{chem2|CO2}} absorption at 1.61 μm and 2.06 μm, and {{chem2|O2}} absorption in reflected sunlight at 0.76 μm. The Cloud and Aerosol Polarimetry Imager (CAPI) is a wide-field, moderate-resolution, imaging spectrometer which works in concert with CDS by compensating for measurement errors caused by clouds and aerosols. It makes observations in ultraviolet (0.38 μm), visible (0.67 μm), and near infrared (0.87 μm, 1.375 μm, and 1.64 μm).{{cite news |url=http://www.spaceflightinsider.com/organizations/china-national-space-administration/long-march-2d-launches-china-tansat-carbon-monitoring-satellite/ |title=Long March 2D launches China's TanSat carbon-monitoring satellite |work=Spaceflight Insider |first=Tomasz |last=Nowakowski |date=21 December 2016 |access-date=12 February 2017}}