DELTA 1 R/B

Satellite information

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Satellite Type and Status

ROCKET BODYIN ORBIT

Key statistics

Satellite DELTA 1 R/B at a glance.

Uptime

20659

Days in orbit

Revolutions

≈ 12.5

Per day

Orbit

SSO

Sun Synchronous Orbit

Inclination

101.6

Latest

Satellite identification and parameters

Extended collection of information and parameters for DELTA 1 R/B.

Object identification

Identified? True

Debris? False

Object name: DELTA 1 R/B

International designator: 1968-114B

Object number (NORAD): 3616

Object ID (CCSDS): 3616

Country: UNITED STATES OF AMERICA (US)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 115.072 minutes

Inclination: 101.6357 deg

SMA: 7836.803 km

Apoapsis: 1469.112 km

Periapsis: 1448.224 km

RAAN: 137.4784 deg

Eccentricy: 0.0013327

Argument of periapsis: 330.7538 deg

Mean anomaly: 34.731 deg

Mean motion: 12.51394786 rev/day

Mean motion (dot): -0.00000045 rev/day2

B* drag term: -0.0000075761 1/REarth

Two-line elements (TLE)

Creation date: July 8, 2025, 2:27 a.m.

Reference frame: TEME

Reference center: EARTH

Epoch: July 7, 2025, 8:58 p.m. UTC

TLE line 0: 0 DELTA 1 R/B

TLE line 1: 1 03616U 68114B 25188.87378354 -.00000045 00000-0 -75761-5 0 9997

TLE line 2: 2 03616 101.6357 137.4784 0013327 330.7538 34.7310 12.51394786585530

Live tracking on map

Real-time ground track for satellite DELTA 1 R/B.

In-orbit conjunctions

A list of the most updated potential collisions computed for object DELTA 1 R/B.

Target Orbit TCA Probability of collision Miss distance Type
SL-14 DEB LEO 2025-03-06 20:40:53 0.0003798126 217.0 (m) DEBRIS
SL-8 DEB LEO 2024-08-04 03:00:52 0.0001458555 181.0 (m) DEBRIS
COSMOS 980 LEO 2024-06-30 08:23:02 0.000302507 154.0 (m) PAYLOAD

Associated space launch

The ESSA series was the second generation of US meterological satellites after the TIROS (Television & Infra-Red Observation Satellite) series. They were also called OT (Operational TIROS), TOS (TIROS Operational Satellite).

DELTA 1 R/B was lifted into orbit during the mission ‘Thor Delta N | ESSA 8’, on board a Thor Delta N space rocket.

The launch took place on Dec. 15, 1968, 5:21 p.m. from Space Launch Complex 2E.

For more information about the launch, click the button.

Launch to space Thor Delta N | ESSA 8
Thor Delta N | ESSA 8

Agency: N/A

Status: Launch Successful

Launch date: Dec. 15, 1968, 5:21 p.m. UTC

Rocket: Thor Delta N

Launch pad: Space Launch Complex 2E

Location: Vandenberg SFB, CA, USA

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