STEP 2

Satellite information

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Satellite Type and Status

PAYLOADIN ORBIT

Key statistics

Satellite STEP 2 at a glance.

Uptime

11531

Days in orbit

Revolutions

≈ 14.9

Per day

Orbit

LEO

Low Earth Orbit

Inclination

81.9

Latest

Satellite identification and parameters

Extended collection of information and parameters for STEP 2.

Object identification

Identified? True

Debris? False

Object name: STEP 2

International designator: 1994-029A

Object number (NORAD): 23105

Object ID (CCSDS): 23105

Country: UNITED STATES OF AMERICA (US)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 96.694 minutes

Inclination: 81.9394 deg

SMA: 6978.45 km

Apoapsis: 660.084 km

Periapsis: 540.546 km

RAAN: 4.4758 deg

Eccentricy: 0.00856481

Argument of periapsis: 151.8512 deg

Mean anomaly: 208.7375 deg

Mean motion: 14.89238576 rev/day

Mean motion (dot): 0.00005069 rev/day2

B* drag term: 0.0004975619 1/REarth

Two-line elements (TLE)

Creation date: Dec. 12, 2025, 10:14 a.m.

Reference frame: TEME

Reference center: EARTH

Epoch: Dec. 12, 2025, 7:02 a.m. UTC

TLE line 0: 0 STEP 2

TLE line 1: 1 23105U 94029A 25346.29335574 .00005069 00000-0 49756-3 0 9997

TLE line 2: 2 23105 81.9394 4.4758 0085648 151.8512 208.7375 14.89238576692056

Live tracking on map

Real-time ground track for satellite STEP 2.

In-orbit conjunctions

A list of the most updated potential collisions computed for object STEP 2.

Target Orbit TCA Probability of collision Miss distance Type
DELTA 1 DEB SSO 2025-03-01 07:41:43 0.0002403837 148.0 (m) DEBRIS
COSMOS 2251 DEB LEO 2025-01-03 01:17:15 0.0003087599 901.0 (m) DEBRIS
CZ-4 DEB SSO 2024-09-24 10:00:11 0.0003711671 566.0 (m) DEBRIS
COSMOS 2251 DEB LEO 2024-09-22 23:34:26 0.0001190403 504.0 (m) DEBRIS

Associated space launch

STEP 2 was lifted into orbit during the mission ‘Pegasus HAPS | Space Test Experiments Platform 2 (STEP-2)’, on board a Pegasus HAPS space rocket.

The launch took place on May 19, 1994, 5:03 p.m. from Edwards Air Force Base.

For more information about the launch, click the button.

Launch to space Pegasus HAPS | Space Test Experiments Platform 2 (STEP-2)
Pegasus HAPS | Space Test Experiments Platform 2 (STEP-2)

Agency: N/A

Status: Launch Successful

Launch date: May 19, 1994, 5:03 p.m. UTC

Rocket: Pegasus HAPS

Launch pad: Edwards Air Force Base

Location: Air launch to orbit

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