THOR ABLESTAR DEB, 261

Orbit data source: Space-Track

THOR ABLESTAR DEB, 261 is space debris in LEO originally from a launch on Thu, 29 Jun 1961 UTC launched from the Air Force Eastern Test Range (AFETR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.

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Iframe URL

https://www.satcat.com/sats-embedded/261?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

261, 1961-015CH

Orbit

LEO

Country

Related business

United States Space Force (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1961-06-29 (64 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 1 day ago

TLE from 1 day ago

0 THOR ABLESTAR DEB
1 00261U 61015CH  25240.81660991  .00000196  00000-0  17815-3 0  9996
2 00261  66.6804  62.0143 0088204 179.8057 180.3076 14.00898128271136

Epoch: 2025-08-28T19:35Z

TLE epoch observation values (Epoch: 2025-08-28T19:35:55.096Z)

Latitude

-0.00003°

Longitude

150.76054°

Altitude

956.884 km

Speed

7.341 km/s

True Right ascension

04h 08m 03s

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

12:45:10

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

953.186 km

Perigee altitude

824.986 km

Semi-major axis

7,267.223 km

Eccentricity

0.00882

Inclination

66.6804°

RAAN

62.0143°

Arg. of periapsis

179.8057°

True anomaly

180.30223°

Mean anomaly

180.3076°

Eccentric anomaly

180.30491°

Mean motion

3.50341 °/min

Orbital period

102.76 mins

BSTAR

0.00017815

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Other satellites on launch #15 in the year 1961 (1961-06-29 UTC)

TRANSIT 4A, 116

THOR ABLESTAR DEB, 140 (Decayed)

THOR ABLESTAR DEB, 141

THOR ABLESTAR DEB, 142 (Decayed)

THOR ABLESTAR DEB, 143 (Decayed)

THOR ABLESTAR DEB, 144

THOR ABLESTAR DEB, 145

THOR ABLESTAR DEB, 146 (Decayed)

THOR ABLESTAR DEB, 147

THOR ABLESTAR DEB, 148

THOR ABLESTAR DEB, 149 (Decayed)

THOR ABLESTAR DEB, 150

THOR ABLESTAR DEB, 151 (Decayed)

THOR ABLESTAR DEB, 152

THOR ABLESTAR DEB, 153 (Decayed)

THOR ABLESTAR DEB Visibility forecast

Observer location: undefined°, undefined°
Set Observer location

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.
9 mins	2025-08-29 21:50:20.631Z	351.224° N	2025-08-29 21:55:20.631Z	58.35° ENE	26.688°	2025-08-29 21:59:20.631Z	108.275° ESE
8 mins	2025-08-29 23:37:20.631Z	306.601° NW	2025-08-29 23:40:20.631Z	257.391° W	33.238°	2025-08-29 23:45:20.631Z	182.005° SSW
10 mins	2025-08-30 12:50:20.631Z	175.402° S	2025-08-30 12:55:20.631Z	103.327° ESE	33.615°	2025-08-30 13:00:20.631Z	44.22° NE
9 mins	2025-08-30 14:36:20.631Z	250.498° W	2025-08-30 14:40:20.631Z	300.125° NW	29.127°	2025-08-30 14:45:20.631Z	8.521° NNE

Co-orbital & Co-planar RSOs

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

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 ascending order

Authenticating...

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Check out THOR ABLESTAR DEB, 261 on other resources

View THOR ABLESTAR DEB, 261 on Heavens-Above

View THOR ABLESTAR DEB, 261 on Keep Track

View THOR ABLESTAR DEB, 261 on Celestrak

View THOR ABLESTAR DEB, 261 on Gunter's Space Page

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

THOR ABLESTAR DEB, 261

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2025-08-28T19:35:55.096Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #15 in the year 1961 (1961-06-29 UTC)

THOR ABLESTAR DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out THOR ABLESTAR DEB, 261 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago