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TRAAC, 205

Orbit data source: Space-Track

TRAAC, 205 is a payload satellite owned by USN BuWeps (US) in LEO that was launched on Wed, 15 Nov 1961 UTC via a THOR ABLESTAR launch vehicle from the Air Force Eastern Test Range (AFETR). 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/205?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/205?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

205, 1961-031B

Orbit

LEO

Country

Related business

United States Navy (US)

Manufacturer

APL

Mission

Spacecraft

Bus & Motor

TRANSIT 4, Unknown motor

Mass

105 kg wet, 105 kg dry

Launch date (UTC)

1961-11-15 (64 years ago)

Launch vehicle

THOR ABLESTAR

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 12 hours ago

TLE from 12 hours ago

0 TRAAC
1   205U 61031B   26110.26157823  .00000025  00000-0  10993-5 0  9996
2   205  32.4407  87.7932 0102185 253.5687 105.3681 13.62570793211166

Epoch: 2026-04-20T06:16Z

TLE epoch observation values (Epoch: 2026-04-20T06:16:40.359Z)

Latitude

-0.00001°

Longitude

145.27077°

Altitude

1,045.868 km

Speed

7.321 km/s

True Right ascension

05h 51m 10s

True Declination

0° 00' 00"

Sunlit

Object was in daylight 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

01:20:52

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,105.448 km

Perigee altitude

954.053 km

Semi-major axis

7,407.888 km

Eccentricity

0.01022

Inclination

32.4407°

RAAN

87.7932°

Arg. of periapsis

253.5687°

True anomaly

106.4933°

Mean anomaly

105.3681°

Eccentric anomaly

105.93109°

Mean motion

3.40409 °/min

Orbital period

105.76 mins

BSTAR

0.0000010993

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Other satellites on launch #31 in the year 1961 (1961-11-15 UTC)

TRANSIT 4B, 202

TRAAC DEB, 10796

THOR ABLESTAR R/B, 204

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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

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TRAAC 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.
10 mins	2026-04-21 01:49:55.965Z	207.962° SW	2026-04-21 01:54:55.965Z	157.52° S	24.808°	2026-04-21 01:59:55.965Z	107.199° ESE
11 mins	2026-04-21 03:41:55.965Z	235.3° WSW	2026-04-21 03:46:55.965Z	169.553° S	35.105°	2026-04-21 03:52:55.965Z	105.238° ESE
11 mins	2026-04-21 05:33:55.965Z	250.774° W	2026-04-21 05:38:55.965Z	186.937° SSW	34.362°	2026-04-21 05:44:55.965Z	122.409° SE
9 mins	2026-04-21 07:26:55.965Z	243.793° WSW	2026-04-21 07:30:55.965Z	200.213° SSW	22.678°	2026-04-21 07:35:55.965Z	153.79° SSE

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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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Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

Check out TRAAC, 205 on other resources

View TRAAC, 205 on NASA - NSSDCA Website

View TRAAC, 205 on Heavens-Above

View TRAAC, 205 on Keep Track

View TRAAC, 205 on Celestrak

View TRAAC, 205 on Gunter's Space Page

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

TRAAC, 205

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-04-20T06:16:40.359Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #31 in the year 1961 (1961-11-15 UTC)

TRAAC Visibility forecast

Co-orbital & Co-planar RSOs

Check out TRAAC, 205 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago