1978-096A
Tiros N, the prototype for the Tiros N series, was launched on 1978 Oct 13 by Atlas F from Vandenberg into a suborbital trajectory on azimuth 192.8 deg. The Star 37S (TE-364-15) solid motor fired at apogee, inserting the payload into a 850 x 866 km x 98.9 deg, 102.1 min orbit with 0300LTDN afternoon orbit. After several weeks of system checkout, NASA transferred the satellite to NOAA-NESS and it entered operational service on 1979 Jan 1. On 1981 Feb 27 Tiros N lost attitude control and was abandoned.
Tiros N was 3.71m high 1.88m dia with a launch mass of 1405 kg. At BOL, mass is 723 kg after AKM and RCS burns. AKM is 48 kg with 664 kg of prop:
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| Tiros N dry | 675 |
| AKM dry | 48 |
| Tiros N BOL | 723 |
| AKM prop | 664 |
| RCS prop | 18 |
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| Full | 1405 kg |
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| Tiros N |
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| Date | Time | Event | Orbit |
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| 1978 Oct 13 | 1123 | Launch by Atlas F | V SLC3W |
| | | T+2:01 BECO |
| | | T+2:04 Booster sep |
| | | T+2:24 Fairing sep |
| | | T+5:24 SECO |
| | | T+5:43 VECO |
| | 1128 | T+5:49 Atlas sep, 896 km |
| | 1133 | T+10:27 AKM burn 43s |
| | 1134 | T+11:10 AKM burnout |
| | 1134 | T+11:15 RCS trim |
| | 1134 | T+11:38 RCS cutoff | 102.07 848 x 863 x 98.91 |
| | | T+13:47 Solar array deploy |
| | | Atlas impact, 7770 km range |
| 1994 May 21 | | | 101.59 825 x 842 x 98.93 |
Payload:
- AVHRR Advanced Very High Resolution Radiometer, 1 km res operating at 0.55-0.90, 0.725-1.10, 3.55-3.93, 10.5-11.5 and 11.5-12.5 mu, for cloud mapping, water imaging, and sea surface temperature.
- TOVS Tiros-N operational vertical sounder
- SSU Stratospheric sounding unit 147 km res, CO2 15 mu band
- MSU Microwave sounding unit 109 km res, O2 50-57 GHz band
- HIRS/2 Tropospheric Hi res IR radiation sounder 17 km res, 0.7 mu vis and 3.7, 4.3, 6.7, 9.7, 11, 15 mu IR (CO2, O3, H2O)
- DCS/ARGOS Data collection system (CNES), 401 MHz
- SEM Space Environment Monitor (measures solar X-rays and particle fluxes)
- TED Total energy detector, 0.3-20 keV
- MEPED Med energy p/e, 30 - 60 keV
- HEPAD High energe p/alpha, 0.37-850 MeV