1991-018A - Inmarsat-2 F-2

Název objektu Inmarsat-2 F-2
SSC 21149
Start1991-03-08 23:03 UT, Eastern Test Range, Delta 6925
Stav objektu na geocentrické dráze
Očekávaná životnost na drázeneomezená
ProvozovatelIMSO
VýrobceIMSO
Kategorietelekomunikační družice
Hmotnost824 kg

Parametry dráhy

Epocha Typ i P hP hA Pozn.
91-03-08.99 G 24.96° 100.49 min 409 km 1173 km přibližné parametry
91-03-09.25 G 23.77° 647.75 min 205 km 36663 km  
91-03-12 G 2.70° 1458.58 min 35924 km 36531 km  
91-04-01 G 2.19° 1436.00 min 35775 km 35799 km  
96-08-22.31 G 2.32° 1436.10 min 35773 km 35800 km  
96-12-03.10 G 2.32° 1440.64 min 35842 km 35910 km  
97-01-02.66 G 2.25° 1436.53 min 35779 km 35811 km  
98-03-22.27 G 2.04° 1436.06 min 35772 km 35800 km  
99-06-01.46 G 1.90° 1440.74 min 35863 km 35892 km  
99-06-28.82 G 1.88° 1436.09 min 35773 km 35800 km  
01-01-18.55 G 1.68° 1436.12 min 35766 km 35808 km  
04-01-03.37 G 1.65° 1436.11 min 35766 km 35807 km  
04-05-14.40 G 1.85° 1436.11 min 35773 km 35800 km  
05-01-01.22 G 2.26° 1436.10 min 35766 km 35807 km  
05-04-10.46 G 2.46° 1436.10 min 35774 km 35799 km  
05-07-22.48 G 2.67° 1436.11 min 35771 km 35802 km  
05-10-26.26 G 2.88° 1436.09 min 35765 km 35808 km  
06-01-30.09 G 3.09° 1436.11 min 35768 km 35806 km  
06-04-28.31 G 3.29° 1436.12 min 35773 km 35801 km  
06-07-28.26 G 3.49° 1436.10 min 35773 km 35801 km  
06-10-22.26 G 3.69° 1436.10 min 35768 km 35805 km  
07-01-19.41 G 3.89° 1436.11 min 35768 km 35806 km  
07-04-13.43 G 4.09° 1436.11 min 35770 km 35803 km  
07-07-14.20 G 4.30° 1436.10 min 35772 km 35801 km  
07-11-09.43 G 4.57° 1436.11 min 35769 km 35805 km  
08-02-04.42 G 4.78° 1436.08 min 35770 km 35803 km  
08-05-05.39 G 4.99° 1436.10 min 35772 km 35802 km  
08-08-01.28 G 5.19° 1436.09 min 35772 km 35801 km  
08-10-30.12 G 5.40° 1436.12 min 35771 km 35804 km  
09-01-30.67 G 5.61° 1436.08 min 35771 km 35802 km  
09-05-01.43 G 5.82° 1436.11 min 35769 km 35805 km  
09-08-04.31 G 6.03° 1436.11 min 35772 km 35802 km  
09-11-06.51 G 6.24° 1436.09 min 35769 km 35804 km  
10-02-03.50 G 6.44° 1436.11 min 35770 km 35803 km  
10-04-22.55 G 6.61° 1438.10 min 35805 km 35846 km  
10-07-21.50 G 6.80° 1436.89 min 35796 km 35809 km  
10-07-22.48 G 6.80° 1435.99 min 35775 km 35794 km  
10-10-25.34 G 7.01° 1436.05 min 35769 km 35802 km  
11-01-31.62 G 7.22° 1436.11 min 35773 km 35801 km  
11-05-06.46 G 7.42° 1436.04 min 35772 km 35799 km  

Význam parametrů: Epocha - Datum (rok, měsíc, den a zlomek dne), pro něž platí uvedené parametry. Typ - Kód typu oběžné dráhy : G - geocentrická (Země), i - Sklon dráhy (úhel mezi rovinou dráhy a referenční rovinou, tj. rovníkem nebo ekliptikou). P - Perioda (doba oběhu). hP - Výška dráhy v pericentru. hA - Výška dráhy v apocentru.

Pozice na stacionární dráze

Epocha λ Δλ i  Poznámka
95-12-06.00-15.50°0.00°/d2.22° 
02-03-10.00-98.04°0.00°/d1.62° 
08-05-05.53-98.09°0.01°/d4.99° 
08-07-01.52-97.98°0.00°/d5.12° 
08-08-21.13-98.04°0.01°/d5.23° 
08-09-19.51-98.08°0.01°/d5.30° 
08-11-05.10-97.87°0.01°/d5.41° 
08-11-13.35-98.10°0.00°/d5.43° 
08-12-23.06-97.83°0.00°/d5.52° 
08-12-23.44-98.01°0.01°/d5.52° 
09-01-14.23-98.16°0.00°/d5.57° 
09-03-04.51-98.11°-0.00°/d5.68° 
09-03-26.29-97.85°0.01°/d5.73° 
09-03-27.37-97.95°0.00°/d5.74° 
09-05-09.42-98.21°0.00°/d5.84° 
09-05-14.23-97.94°-0.00°/d5.85° 
09-06-23.29-98.22°0.00°/d5.93° 
09-08-26.20-98.10°0.00°/d6.08° 
09-10-31.29-97.99°0.00°/d6.22° 
09-12-12.50-97.98°0.01°/d6.32° 
10-01-08.28-98.24°0.00°/d6.38° 
10-09-17.57-144.03°0.01°/d6.93° 
10-11-10.52-144.19°0.01°/d7.04° 
10-12-31.57-143.86°0.02°/d7.15° 
10-12-31.57-143.86°0.02°/d7.15° 
10-12-31.57-143.86°0.02°/d7.15° 
11-01-03.43-144.14°0.02°/d7.16° 
11-01-03.43-144.14°0.02°/d7.16° 
11-01-03.43-144.14°0.02°/d7.16° 
11-01-12.34-144.23°0.01°/d7.18° 
11-01-12.34-144.23°0.01°/d7.18° 
11-01-13.54-143.88°0.02°/d7.18° 
11-01-15.83-144.25°0.01°/d7.18° 
11-01-15.83-144.25°0.01°/d7.18° 
11-01-16.43-144.11°0.02°/d7.18° 
11-01-30.33-144.25°0.00°/d7.21° 
11-01-31.62-143.95°-0.00°/d7.22° 
11-01-31.62-143.95°-0.00°/d7.22° 
11-03-12.63-144.23°-0.00°/d7.30° 
11-03-12.63-144.23°-0.00°/d7.30° 
11-03-14.49-143.88°0.00°/d7.30° 
11-03-15.56-144.08°-0.00°/d7.31° 
11-03-16.59-144.18°0.00°/d7.31° 
11-03-24.42-143.78°0.01°/d7.33° 
11-03-24.42-143.78°0.01°/d7.33° 
11-03-24.42-143.78°0.01°/d7.33° 
11-03-24.42-143.78°0.01°/d7.33° 
11-03-30.61-144.26°-0.00°/d7.34° 
11-03-30.61-144.26°-0.00°/d7.34° 
11-04-02.30-143.88°0.01°/d7.35° 
11-04-03.47-143.95°-0.00°/d7.35° 
11-04-04.54-144.16°-0.00°/d7.35° 
11-04-05.29-143.88°0.01°/d7.35° 
11-04-06.25-143.97°0.02°/d7.35° 
11-04-07.56-144.23°0.00°/d7.36° 
11-04-07.56-144.23°0.00°/d7.36° 
11-04-09.39-143.79°0.01°/d7.36° 
11-04-10.38-143.78°0.01°/d7.36° 
11-04-11.45-143.93°0.01°/d7.36° 
11-04-12.40-143.82°0.01°/d7.37° 
11-04-13.41-143.82°0.01°/d7.37° 
11-04-14.46-143.97°0.01°/d7.37° 
11-04-15.43-143.88°0.01°/d7.37° 
11-04-15.43-143.88°0.01°/d7.37° 
11-04-15.43-143.88°0.01°/d7.37° 
11-04-18.63-144.20°0.02°/d7.38° 
11-04-18.63-144.20°0.02°/d7.38° 
11-04-25.58-144.32°0.01°/d7.39° 
11-04-27.34-143.81°0.00°/d7.40° 
11-04-27.38-143.88°0.00°/d7.40° 
11-04-27.38-143.88°0.00°/d7.40° 
11-05-01.61-144.24°0.02°/d7.41° 
11-05-03.37-143.87°0.01°/d7.41° 
11-05-04.43-144.05°0.01°/d7.41° 
11-05-05.41-143.97°0.01°/d7.41° 
11-05-06.46-144.13°0.01°/d7.42° 
11-05-07.21-143.80°0.03°/d7.42° 
11-05-08.45-144.08°0.02°/d7.42° 
11-05-09.46-144.10°0.02°/d7.42° 
11-05-09.46-144.10°0.02°/d7.42° 
11-05-09.46-144.10°0.02°/d7.42° 
11-05-17.46-144.23°-0.00°/d7.44° 
11-05-18.55-144.25°0.01°/d7.44° 
11-05-19.47-144.26°0.00°/d7.44° 
11-05-20.48-144.27°0.01°/d7.44° 
11-05-21.48-144.28°0.01°/d7.45° 
11-05-22.31-143.83°0.00°/d7.45° 
11-05-23.46-144.25°0.01°/d7.45° 
11-05-24.51-144.26°0.02°/d7.45° 
11-05-25.43-144.19°0.01°/d7.46° 
11-05-26.42-144.16°0.01°/d7.46° 
11-05-27.12-143.86°0.03°/d7.46° 
11-05-28.41-144.13°0.01°/d7.46° 
11-05-29.33-143.86°0.01°/d7.46° 
11-05-30.33-143.84°0.02°/d7.46° 
11-05-31.32-143.82°0.02°/d7.47° 
11-05-31.32-143.82°0.02°/d7.47° 
11-06-03.38-144.10°-0.01°/d7.47° 
11-06-27.61-143.79°0.01°/d7.52° 
11-06-28.45-144.19°0.01°/d7.52° 
11-06-29.63-143.78°0.01°/d7.52° 
11-06-30.61-143.78°0.01°/d7.53° 
11-07-07.34-144.21°0.01°/d7.54° 
11-07-07.34-144.21°0.01°/d7.54° 
11-07-07.34-144.21°0.01°/d7.54° 
11-07-07.34-144.21°0.01°/d7.54° 
11-07-10.66-143.80°0.01°/d7.55° 
11-07-11.47-144.01°0.03°/d7.55° 
11-07-12.48-143.94°0.03°/d7.55° 
11-07-12.48-143.94°0.03°/d7.55° 
11-07-13.72-143.94°0.00°/d7.55° 
11-07-17.36-144.24°0.00°/d7.56° 
11-07-18.43-144.12°0.01°/d7.56° 
11-08-13.33-144.17°0.01°/d7.61° 
11-08-14.35-144.12°0.02°/d7.62° 
11-08-15.62-144.03°0.00°/d7.62° 
11-08-15.62-144.03°0.00°/d7.62° 
11-08-22.47-143.73°0.02°/d7.63° 
11-08-23.49-143.71°0.02°/d7.63° 
11-08-24.57-143.85°0.02°/d7.64° 
11-08-24.57-143.85°0.02°/d7.64° 
11-08-24.57-143.85°0.02°/d7.64° 
11-09-07.51-143.88°0.00°/d7.66° 
11-09-07.51-143.88°0.00°/d7.66° 
11-09-07.51-143.88°0.00°/d7.66° 
11-09-12.63-144.20°0.02°/d7.67° 
11-09-16.48-143.75°0.02°/d7.68° 
11-09-16.48-143.75°0.02°/d7.68° 
11-09-16.48-143.75°0.02°/d7.68° 
11-09-16.48-143.75°0.02°/d7.68° 
11-09-22.53-143.99°-0.01°/d7.69° 
11-09-22.63-144.26°0.00°/d7.69° 
11-09-22.63-144.26°0.00°/d7.69° 
11-09-25.30-143.86°0.01°/d7.70° 
11-09-26.50-143.94°-0.00°/d7.70° 
11-09-27.55-144.13°-0.00°/d7.70° 
11-09-28.47-143.88°-0.00°/d7.70° 
11-09-29.40-143.75°0.01°/d7.71° 
11-09-30.37-143.73°0.01°/d7.71° 
11-10-02.52-144.06°0.00°/d7.71° 
11-10-02.52-144.06°0.00°/d7.71° 
11-10-03.51-144.03°0.01°/d7.72° 
11-10-04.44-143.82°0.01°/d7.72° 
11-10-05.38-143.70°0.02°/d7.72° 
11-10-06.37-143.69°0.02°/d7.72° 
11-10-07.19-144.06°0.03°/d7.72° 
11-10-07.19-144.06°0.03°/d7.72° 
11-10-07.19-144.06°0.03°/d7.72° 
11-10-07.19-144.06°0.03°/d7.72° 
11-10-16.51-144.15°0.00°/d7.74° 
11-10-17.24-143.85°0.02°/d7.74° 
11-10-24.52-144.22°0.01°/d7.76° 
11-10-26.33-143.70°0.01°/d7.76° 
11-10-27.65-144.08°0.02°/d7.76° 
11-10-28.42-143.93°0.01°/d7.77° 
11-11-09.35-143.48°0.04°/d7.79° 
11-11-10.34-143.41°0.04°/d7.79° 
11-11-10.34-143.41°0.04°/d7.79° 
11-11-12.54-143.78°0.06°/d7.80° 
11-11-13.48-143.72°0.05°/d7.80° 
11-11-14.56-143.65°0.06°/d7.80° 
11-11-22.18-142.75°0.07°/d7.82° 
11-11-23.46-143.18°0.07°/d7.82° 
11-11-25.21-142.50°0.07°/d7.82° 
11-11-26.52-142.96°0.08°/d7.82° 
11-11-27.37-142.74°0.07°/d7.83° 
11-11-28.55-142.75°0.09°/d7.83° 
11-11-30.21-142.15°0.08°/d7.83° 
11-11-30.55-142.58°0.09°/d7.83° 
11-12-01.36-142.46°0.07°/d7.83° 
11-12-02.56-142.36°0.09°/d7.84° 
11-12-03.74-142.00°0.08°/d7.84° 
11-12-04.54-142.26°0.10°/d7.84° 
11-12-04.60-142.05°0.10°/d7.84° 
11-12-04.60-142.05°0.10°/d7.84° 
11-12-06.44-142.25°0.09°/d7.84° 
11-12-06.44-142.25°0.09°/d7.84° 
11-12-10.23-141.79°-0.01°/d7.85° 
11-12-10.27-141.89°-0.02°/d7.85° 
11-12-11.25-141.85°-0.01°/d7.85° 
11-12-11.25-141.85°-0.01°/d7.85° 
11-12-11.25-141.85°-0.01°/d7.85° 
11-12-11.25-141.85°-0.01°/d7.85° 
11-12-16.22-141.84°-0.00°/d7.86° 

Význam hodnot: Epocha - Datum (rok, měsíc, den), pro něž platí uvedené údaje. λ - Zeměpisná délka subsatelitního bodu ve stupních (kladná je východní délka, záporná je západní délka). Δλ - Denní změna polohy vzhledem k zemskému povrchu (změna zeměpisné délky subsatelitního bodu) ve stupních za den (kladná východním směrem, záporná západním směrem). i - Sklon dráhy k rovníku ve stupních.

Popis objektu

Stacionární telekomunikační družice. Postavila ji firma British Aerospace Space Systems (nyní Astrium), Stevenage (Velká Británie). Provozovatelem je mezinárodní konsorcium International Maritime Satellite Organization (Inmarsat, IMSO), London (Velká Británie).

Tříose stabilizovaná družice typu Eurostar 1000 o rozměrech 2.56×1.58×1.48 m s panely slunečních baterií o rozpětí 15.23 m je určena pro spojení s pohyblivými pojítky, především námořními loděmi a letadly. Zajišťuje současně 250 telefonních linek v pásmu L (1.5-1.6 GHz) ve směru od pohyblivého pojítka přes družici k pozemní stanici a 150 linek v pásmu C (4/6 GHz) ve směru opačném. Pro navedení na stacionární dráhu je vybavena vlastním apogeovým motorem.

Hlavní pozemní řídicí středisko SCC [=Satellite Control Centre] leží v blízkosti Londýna (Velká Británie).

Předchozí družicí této řady byl Inmarsat 2 F-1 (1990-093A). Následující byl Inmarsat 2 F-3 (1991-084B).

Průběh letu

Datum Událost
1991-04-13 Uveden do operačního provozu.
1997-leden Počátkem měsíce přemístěn nad 55.5° z.d.
1997-02-01 Vyveden z pozice nad 16° z.d.
1999-05-17 Kolem tohoto data byla družice vymanévrována z pozice nad 55° z.d. mimo geostacionární dráhu3.
1999-06-27 Kolem tohoto data zakotvena4 nad 99° z.d.

Literatura

  1. Home Page. - London : Inmarsat, 2004. - [Cit. 2005-03-12].     (http://www.inmarsat.com).
  2. SPACEWARN Activities. - SPACEWARN Bulletin [449] 1 (1991-03-25).     (ftp://nssdc.gsfc.nasa.gov/pub/spacewarn/spx.449).
  3. Satellite Digest-323 / P. S. Clark. - Spaceflight 41 [9] 395-396 (1999).
  4. Satellite Digest-324 / P. S. Clark. - Spaceflight 41 [10] 439-440 (1999).

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