BSAT-2a
{{Short description|Japanese communications satellite}}
{{Use American English|date=April 2021}}
{{Use mdy dates|date=April 2021}}
{{Infobox spaceflight
| name = BSAT-2a
| names_list =
| image =
| image_caption =
| image_alt =
| image_size =
| mission_type = Communication
| operator = B-SAT
| Harvard_designation =
| SATCAT = 26720
| website =
| mission_duration =
| spacecraft = BSAT-2a
| spacecraft_type =
| spacecraft_bus = STAR-1
| manufacturer = Orbital Sciences Corporation
| launch_mass = {{convert|1317|kg|abbr=on}}
| BOL_mass =
| landing_mass =
| dry_mass = {{convert|535|kg|abbr=on}}
| payload_mass =
| dimensions = {{convert|3.76|x|2.49|x|2.03|m|abbr=on}}
| power = 2.6 kW
| launch_date = {{start date|2001|03|08|22|51|7=Z}}
| launch_rocket = Ariane 5G V-140
| launch_site = Guiana Space Center ELA-3
| launch_contractor = Arianespace
| deployment_from =
| deployment_date =
| entered_service = April 26, 2001
| disposal_type = Placed in a graveyard orbit
| deactivated = {{end date|2013|01}}
| destroyed =
| last_contact =
| recovery_by =
| recovery_date =
| decay_date =
| landing_date =
| landing_site =
| orbit_reference = Geocentric
| orbit_regime = Graveyard orbit
| orbit_longitude =
| orbit_slot =
| orbit_semimajor = 42,474 km
| orbit_eccentricity =
| orbit_periapsis = 36,069.5 km
| orbit_apoapsis = 36,137.2 km
| orbit_inclination = 3.4°
| orbit_period = 1,451.9 minutes
| orbit_RAAN =
| orbit_arg_periapsis =
| orbit_mean_anomaly =
| orbit_mean_motion =
| orbit_repeat =
| orbit_velocity =
| orbit_epoch = 00:00:00 UTC 2016-09-07
| orbit_rev_number =
| apsis = gee
| trans_band = 4 (plus 4 spares) Ku band
| trans_frequency =
| trans_bandwidth =
| trans_capacity =
| trans_coverage =
| trans_TWTA = 130 Watts
| trans_EIRP =
| trans_HPBW =
| programme = B-SAT
| previous_mission = BSAT-1b
| next_mission = BSAT-2b
| insignia =
| insignia_caption =
| insignia_alt =
| insignia_size =
}}
BSAT-2a, was a geostationary communications satellite operated by B-SAT which was designed and manufactured by Orbital Sciences Corporation on the STAR-1 platform. It was stationed on the 110° East orbital slot along its companion BSAT-2c from where they provided redundant high definition direct television broadcasting across Japan.
Satellite description
BSAT-2a was designed and manufactured by Orbital Sciences Corporation on the STAR-1 satellite bus for B-SAT. It had a launch mass of {{convert|1317|kg|abbr=on}}, a dry mass of {{convert|535|kg|abbr=on}}, and a 10-year design life. As all four STAR-1 satellites, it had a solid rocket Star 30CBP apogee kick motor for orbit raising, plus {{convert|200|kg|abbr=on}} of propellant for its liquid propellant station keeping thrusters.
It measured {{convert|3.76|x|2.49|x|2.03|m|abbr=on}} when stowed for launch. Its dual wing solar panels can generate 2.6 kW of power at the beginning of its design life, and span {{convert|16.10|m|abbr=on}} when fully deployed.
It has a single Ku band payload with four active transponders plus four spares with a TWTA output power of 130 Watts.
History
In March 1999, B-SAT ordered from Orbital Sciences Corporation two satellites based on the STAR-1 platform: BSAT-2a and BSAT-2b. This was the second order of the bus and the first since Orbital had acquired CTA Space Systems, the original developer.
BSAT-2a was launched aboard an Ariane 5G at 22:51 UTC, March 8, 2001, from Guiana Space Center ELA-3. It rode on the lower berth below Eurobird. On April 26, BSAT-2a was commissioned into service starting the broadcast of digital signals.
B-SAT ended the broadcast of analog television in July 2011. During January 2013, BSAT-2a was sent to a graveyard orbit and decommissioned.
References
{{Reflist|2|refs=
{{cite web |url=http://www.arianespace.com/us/news/kit/V140launchkit.pdf |archive-url=https://web.archive.org/web/20010706002804/http://www.arianespace.com/us/news/kit/V140launchkit.pdf |archive-date=2001-07-06 |title=Launch Kit V-140 |publisher=Arianespace |date=May 22, 2001 |access-date=2016-09-06}}
{{cite web |url=http://www.b-sat.co.jp/company-profile/history/ |title=沿革 |trans-title=History |publisher=Broadcasting Satellite System Corporation |access-date=2016-09-07}}
{{cite web |url=https://www.orbitalatk.com/space-systems/commercial-satellites/communications-satellites/docs/FS008_01_OA_3695%20BSAT-2.pdf |title=BSAT-2 Series |publisher=Orbital ATK |date=2015 |archive-url=https://web.archive.org/web/20160906164538/https://www.orbitalatk.com/space-systems/commercial-satellites/communications-satellites/docs/FS008_01_OA_3695%20BSAT-2.pdf |archive-date=2016-09-06 |access-date=2016-09-06}}
}}
{{Portal|Spaceflight}}
{{BSAT satellites}}
{{Orbital launches in 2001}}
Category:Communications satellites in geostationary orbit
Category:Satellites using the GEOStar bus
Category:Spacecraft launched in 2001