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STEP 2, 23105

Orbit data source: Space-Track

STEP 2, 23105 is a payload satellite owned by USAF STP (US) in LEO that was launched on Thu, 19 May 1994 UTC via a PEGASUS/HAPS launch vehicle from the Air Force Western Test Range (AFWTR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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<iframe src="https://www.satcat.com/sats-embedded/23105?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/23105?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

23105, 1994-029A

Orbit

LEO

Country

Related business

United States Space Force (US)

Manufacturer

TRWC/CTA

Mission

Defense Technology

Bus & Motor

LEOSTAR T-200, Unknown motor

Mass

180 kg wet, 180 kg dry

Launch date (UTC)

1994-05-19 (32 years ago)

Launch vehicle

PEGASUS/HAPS

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + 4 Pan, 1.5 m

Radar Cross Section

3.076 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 7 hours ago

TLE from 7 hours ago

0 STEP 2
1 23105U 94029A   26119.03887867  .00003608  00000-0  34348-3 0  9993
2 23105  81.9395 224.0206 0083511  61.4137 299.5450 14.90493074712560

Epoch: 2026-04-29T00:55Z

TLE epoch observation values (Epoch: 2026-04-29T00:55:59.117Z)

Latitude

-0.00005°

Longitude

-6.9813°

Altitude

571.071 km

Speed

7.591 km/s

True Right ascension

14h 56m 04s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

15:16:02

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

651.651 km

Perigee altitude

535.211 km

Semi-major axis

6,971.568 km

Eccentricity

0.00835

Inclination

81.9395°

RAAN

224.0206°

Arg. of periapsis

61.4137°

True anomaly

298.70819°

Mean anomaly

299.545°

Eccentric anomaly

299.12702°

Mean motion

3.72861 °/min

Orbital period

96.55 mins

BSTAR

0.00034348

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Other satellites on launch #29 in the year 1994 (1994-05-19 UTC)

PEGASUS DEB, 24002 (Decayed)

PEGASUS DEB, 24774 (Decayed)

PEGASUS DEB, 24688 (Decayed)

PEGASUS DEB, 24253 (Decayed)

PEGASUS DEB, 24238 (Decayed)

PEGASUS DEB, 24093 (Decayed)

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STEP 2 Visibility forecast

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Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
6 mins	2026-04-29 19:14:21.709Z	328.338° NNW	2026-04-29 19:16:21.709Z	270.941° WNW	37.16°	2026-04-29 19:20:21.709Z	191.592° SSW
5 mins	2026-04-30 07:41:21.709Z	184.173° SSW	2026-04-30 07:43:21.709Z	112.277° ESE	44.891°	2026-04-30 07:46:21.709Z	9.741° NNE

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out STEP 2, 23105 on other resources

View STEP 2, 23105 on NASA - NSSDCA Website

View STEP 2, 23105 on Heavens-Above

View STEP 2, 23105 on Keep Track

View STEP 2, 23105 on Celestrak

View STEP 2, 23105 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

STEP 2, 23105

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-04-29T00:55:59.117Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #29 in the year 1994 (1994-05-19 UTC)

STEP 2 Visibility forecast

Co-orbital & Co-planar RSOs

Check out STEP 2, 23105 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 7 hours ago