Tiros N Satellite Bus
Data current as of 2026-07-20.
The Tiros N bus accounts for 6 cataloged objects, of which 5 are in orbit and 0 are active. 1 have reentered. Most are built by RCA. The largest operator on this bus is NOAA. The first launched in 1978, the most recent in 1999.
5
In orbit
0
Active
6
Total launched
1
Reentered
Tiros N launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged Tiros N satellites.
| Manufacturer | RCA |
|---|---|
| Purpose | Meteorology |
| Launch mass | 685 kg |
| Dry mass | 685 kg |
| Length | 3.7 m |
| Diameter | 1.9 m |
| Span | 4.9 m |
| Shape | Box + Pan |
| Power | Deployable solar array, batteries |
| Propulsion | Star 37S |
| Design life | 2 years minimum |
| Equipment | AVHRR/1, TOVS (HIRS/2, SSU, MSU), SEM, DCPLS |
| Typical orbit | 101 min period, 99° inclination |
Top operators
Top countries
US 6
Tiros N satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| LANDSAT 7 Landsat 7 | 25682 | 1999-020A | USGS | Apr 15, 1999 | 98 min, 97.9° | Inactive | ◉ |
| NOAA 12 NOAA 12 | 21263 | 1991-032A | NOAA | May 14, 1991 | 101 min, 98.6° | Inactive | ◉ |
| NOAA 7 NOAA 7 | 12553 | 1981-059A | NOAA | Jun 23, 1981 | 102 min, 98.8° | Inactive | ◉ |
| NOAA B NOAA B | 11819 | 1980-043A | NOAA | May 29, 1980 | 88 min, 92.1° | Reentered | ◉ |
| NOAA 6 NOAA 6 | 11416 | 1979-057A | NOAA | Jun 27, 1979 | 100 min, 98.6° | Inactive | ◉ |
| TIROS N Tiros-N | 11060 | 1978-096A | GSFC | Oct 13, 1978 | 101 min, 98.5° | Inactive | ◉ |
Frequently asked questions
How many Tiros N satellites are there?
The catalog lists 6 objects built on the Tiros N bus. 5 are in orbit and 1 have reentered.
How many Tiros N satellites are in orbit?
5 Tiros N objects are currently in orbit, of which 0 carry an active status.
Who builds the Tiros N bus?
The Tiros N bus is most commonly built by RCA.
When did the first Tiros N satellite launch?
The first cataloged Tiros N satellite launched in 1978, and the most recent in 1999.