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BSAT-2a - Wikipedia

From Wikipedia, the free encyclopedia

BSAT-2a
Spacecraft properties

Mission type	Communication
Operator	B-SAT
COSPAR ID	2001-011B^[1]
SATCAT no.	26720


Spacecraft	BSAT-2a
Bus	STAR-1^[2]
Manufacturer	Orbital Sciences Corporation
Launch mass	1,317 kg (2,903 lb)
Dry mass	535 kg (1,179 lb)
Dimensions	3.76 m × 2.49 m × 2.03 m (12.3 ft × 8.2 ft × 6.7 ft)
Power	2.6 kW


Start of mission
Launch date	22:51, March 8, 2001 (UTC) (2001-03-08T22:51Z)^[1]
Rocket	Ariane 5G V-140
Launch site	Guiana Space Center ELA-3
Contractor	Arianespace
Entered service	April 26, 2001


End of mission
Disposal	Placed in a graveyard orbit
Deactivated	January 2013 (2013-01)


Orbital parameters
Reference system	Geocentric
Regime	Graveyard orbit^[3]
Semi-major axis	42,474 km
Perigee altitude	36,069.5 km
Apogee altitude	36,137.2 km
Inclination	3.4°
Period	1,451.9 minutes
Epoch	00:00:00 UTC 2016-09-07


Transponders
Band	4 (plus 4 spares) K_u band
TWTA power	130 Watts

B-SAT ← BSAT-1b BSAT-2b →

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.^[4]^[5]^[6]

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 1,317 kg (2,903 lb), a dry mass of 535 kg (1,179 lb), and a 10-year design life.^[7] As all four STAR-1 satellites, it had a solid rocket Star 30CBP apogee kick motor for orbit raising, plus 200 kg (440 lb) of propellant for its liquid propellant station keeping thrusters.^[5]^[2]^[8]

It measured 3.76 m × 2.49 m × 2.03 m (12.3 ft × 8.2 ft × 6.7 ft) 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 16.10 m (52.8 ft) when fully deployed.^[7]

It has a single K_u band payload with four active transponders plus four spares with a TWTA output power of 130 Watts.^[4]^[7]

History

In March 1999, B-SAT ordered from Orbital Sciences Corporation two satellites based on the STAR-1 platform: BSAT-2a and BSAT-2b.^[9] This was the second order of the bus and the first since Orbital had acquired CTA Space Systems, the original developer.^[2]

BSAT-2a was launched aboard an Ariane 5G at 22:51 UTC, March 8, 2001, from Guiana Space Center ELA-3.^[10] It rode on the lower berth below Eurobird. On April 26, BSAT-2a was commissioned into service starting the broadcast of digital signals.^[1]^[9]

B-SAT ended the broadcast of analog television in July 2011. During January 2013, BSAT-2a was sent to a graveyard orbit and decommissioned.^[9]^[4]

References

^ ^a ^b ^c "BSAT 2A". NASA Space Science Data Coordinated Archive. April 27, 2016. Retrieved September 7, 2016.
^ ^a ^b ^c Richmond, Christopher W. (2008). "The Growth of Orbital Sciences and the Market for Small GEO Satellites" (PDF). Space Japan Review (English Version) (55). AIAA JFSC. Archived from the original (PDF) on September 6, 2016. Retrieved September 6, 2016.
^ "BSAT-2A". n2yo.com. Retrieved September 7, 2016.
^ ^a ^b ^c "BSAT-2 Series" (PDF). Orbital ATK. 2015. Archived from the original (PDF) on September 6, 2016. Retrieved September 6, 2016.
^ ^a ^b Krebs, Gunter Dirk (April 17, 2016). "BSat 2a, 2b". Gunter's Space Page. Retrieved August 29, 2016.
^ "BSat 2A". Satbeams. Retrieved September 7, 2016.
^ ^a ^b ^c "Launch Kit V-140" (PDF). Arianespace. May 22, 2001. Archived from the original (PDF) on July 6, 2001. Retrieved September 6, 2016.
^ Wade, Mark. "Star Bus". Astronautix.com. Encyclopaedia Astronautica. Archived from the original on August 20, 2016. Retrieved September 7, 2016.
^ ^a ^b ^c "沿革" [History]. Broadcasting Satellite System Corporation. Retrieved September 7, 2016.
^ Ray, Justin (March 8, 2001). "Arianespace launches first Ariane 5 rocket of 2001". Space Flight Now. Retrieved September 8, 2016.

v t e BSAT satellites
1a 1b 2a 2b 2c 3a 3b 3c 4a 4b

v t e ← 2000 Orbital launches in 2001 2002 →
January ,	Shenzhou 2 Türksat 2A Progress M1-5 USA-156
February ,	Sicral 1, Skynet 4F STS-98 (Destiny) Odin Progress M-44 USA-157
March ,	STS-102 (Leonardo MPLM) Eurobird 1, BSAT-2a XM-2
April ,	Ekran-M No.18L 2001 Mars Odyssey GSAT-1 STS-100 (Raffaello MPLM) Soyuz TM-32
May ,	XM-1 PAS-10 USA-158 Progress M1-6 Kosmos 2377
June ,	Kosmos 2378 Intelsat 901 Astra 2C ICO F2 MAP
July ,	STS-104 (Quest) Artemis, BSAT-2b Molniya-3K No.11 GOES 12 Koronas-F
August ,	USA-159 Genesis STS-105 (Leonardo MPLM, Simplesat) Progress M-45 Kosmos 2379 VEP-2, LRE Intelsat 902
September ,	USA-160 Progress M-SO1 (Pirs) OrbView-4, QuickTOMS, SBD, Odyssey Atlantic Bird 2 Starshine 3, PICOSat, PCSat, SAPPHIRE
October ,	USA-161 Globus No.14L USA-162 QuickBird-2 Soyuz TM-33 TES, PROBA, BIRD Molniya-3 No.64
November ,	Progress M1-7 (Kolibri 2000) DirecTV-4S
December ,	Kosmos 2380, Kosmos 2381, Kosmos 2382 STS-108 (Raffaello MPLM, Starshine 2 Jason-1, TIMED Meteor-3M #1, Kompass, Badr-B, Maroc-Tubsat, Reflektor Kosmos 2383 Kosmos 2384, Kosmos 2385, Kosmos 2386, Gonets-D1 No.10, Gonets-D1 No.11, Gonets-D1 No.12
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).

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