ITOS 1 (TIROS M)

Satellite information

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Satellite Type and Status

PAYLOADIN ORBIT

Key statistics

Satellite ITOS 1 (TIROS M) at a glance.

Uptime

20419

Days in orbit

Revolutions

≈ 12.5

Per day

Orbit

SSO

Sun Synchronous Orbit

Inclination

101.4

Latest

Satellite identification and parameters

Extended collection of information and parameters for ITOS 1 (TIROS M).

Object identification

Identified? True

Debris? False

Object name: ITOS 1 (TIROS M)

International designator: 1970-008A

Object number (NORAD): 4320

Object ID (CCSDS): 4320

Country: UNITED STATES OF AMERICA (US)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 115.005 minutes

Inclination: 101.3975 deg

SMA: 7833.785 km

Apoapsis: 1477.434 km

Periapsis: 1433.866 km

RAAN: 29.0147 deg

Eccentricy: 0.00278078

Argument of periapsis: 306.0223 deg

Mean anomaly: 167.4304 deg

Mean motion: 12.52118015 rev/day

Mean motion (dot): -0.00000015 rev/day²

B* drag term: 0.00017675441 1/R_Earth

Two-line elements (TLE)

Creation date: Dec. 19, 2025, 2:08 a.m.

Reference frame: TEME

Reference center: EARTH

Epoch: Dec. 18, 2025, 6:08 p.m. UTC

TLE line 0: 0 ITOS 1 (TIROS M)

TLE line 1: 1 04320U 70008A 25352.75619831 -.00000015 00000-0 17675-3 0 9997

TLE line 2: 2 04320 101.3975 29.0147 0027808 306.0223 167.4304 12.52118015751274

Live tracking on map

Real-time ground track for satellite ITOS 1 (TIROS M).

In-orbit conjunctions

A list of the most updated potential collisions computed for object ITOS 1 (TIROS M).

Target	Orbit	TCA	Probability of collision	Miss distance	Type
CZ-4 DEB	SSO	2025-08-06 07:36:37	0.000514751	430.0 (m)	DEBRIS
DELTA 1 DEB	SSO	2024-06-27 05:31:27	0.0001284726	274.0 (m)	DEBRIS

Associated space launch

Sun-synchronous meteorological satellite

ITOS 1 (TIROS M) was lifted into orbit during the mission ‘Thor Delta N6 | ITOS 1’, on board a Thor Delta N6 space rocket.

The launch took place on Jan. 23, 1970, 11:31 a.m. from Space Launch Complex 2W.

For more information about the launch, click the button.

Thor Delta N6 | ITOS 1

Agency: N/A

Status: Launch Successful

Launch date: Jan. 23, 1970, 11:31 a.m. UTC

Rocket: Thor Delta N6

Launch pad: Space Launch Complex 2W

Location: Vandenberg SFB, CA, USA

...

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Latest news about this satellite

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