THOR ABLESTAR DEB, 561

Orbit data source: Space-Track

THOR ABLESTAR DEB, 561 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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/561?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/561?theme=dark&initialShowStats=false

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

Identifier

561, 1961-015GT

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 (65 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 19 hours ago

TLE from 19 hours ago

0 THOR ABLESTAR DEB
1 00561U 61015GT  26198.20251850 -.00000431  00000-0 -14001-2 0  9992
2 00561  67.7546 279.7946 0631247 277.4782 101.7347 12.41533426944857

Epoch: 2026-07-17T04:51Z

TLE epoch observation values (Epoch: 2026-07-17T04:51:37.598Z)

Latitude

24.12223°

Longitude

-77.64282°

Altitude

1,632.754 km

Speed

6.999 km/s

True Right ascension

19h 21m 11s

True Declination

24° 00' 30"

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

12:05:22

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,995.723 km

Perigee altitude

1,001.301 km

Semi-major axis

7,876.649 km

Eccentricity

0.06312

Inclination

67.7546°

RAAN

279.7946°

Arg. of periapsis

277.4782°

True anomaly

108.68807°

Mean anomaly

101.7347°

Eccentric anomaly

105.22454°

Mean motion

3.10478 °/min

Orbital period

115.95 mins

BSTAR

-0.0014001

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

THOR ABLESTAR DEB, 417

THOR ABLESTAR DEB, 1943

THOR ABLESTAR DEB, 48818 (Decayed)

THOR ABLESTAR DEB, 264

THOR ABLESTAR DEB, 20174

THOR ABLESTAR DEB, 176 (Decayed)

THOR ABLESTAR DEB, 254

THOR ABLESTAR DEB, 419 (Decayed)

THOR ABLESTAR DEB, 156 (Decayed)

THOR ABLESTAR DEB, 3125

THOR ABLESTAR DEB, 558

THOR ABLESTAR DEB, 402

THOR ABLESTAR DEB, 148

THOR ABLESTAR DEB, 323

Did you know?

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

Click here to try in Sandbox

THOR ABLESTAR DEB Visibility forecast

Loading observer location...
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.
18 mins	2026-07-18 05:55:39.963Z	172.728° S	2026-07-18 06:04:39.963Z	99.242° ESE	35.52°	2026-07-18 06:13:39.963Z	38.884° NE
19 mins	2026-07-18 07:55:39.963Z	235.551° WSW	2026-07-18 08:03:39.963Z	305.692° NW	38.673°	2026-07-18 08:14:39.963Z	22.691° NE
13 mins	2026-07-18 10:00:39.963Z	297.511° NW	2026-07-18 10:06:39.963Z	334.353° NNW	19.098°	2026-07-18 10:13:39.963Z	14.51° NNE
10 mins	2026-07-18 12:07:39.963Z	341.501° N	2026-07-18 12:12:39.963Z	8.833° NNE	14.647°	2026-07-18 12:17:39.963Z	35.88° NE
17 mins	2026-07-18 14:08:39.963Z	344.74° N	2026-07-18 14:17:39.963Z	41.591° NE	26.7°	2026-07-18 14:25:39.963Z	93.374° ESE
20 mins	2026-07-18 16:08:39.963Z	332.771° NNW	2026-07-18 16:18:39.963Z	41.495° NE	44.949°	2026-07-18 16:28:39.963Z	153.126° SSE
13 mins	2026-07-18 18:10:39.963Z	303.732° NW	2026-07-18 18:16:39.963Z	265.913° W	22.393°	2026-07-18 18:23:39.963Z	218.966° SW

Items per page:

1–7 of 7 items

of 1 page

Co-orbital & Co-planar RSOs

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

Please sign-in to view Co-orbital & Co-planar RSOs.

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

Authenticating...

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 THOR ABLESTAR DEB, 561 on other resources

View THOR ABLESTAR DEB, 561 on Heavens-Above

View THOR ABLESTAR DEB, 561 on Keep Track

View THOR ABLESTAR DEB, 561 on Celestrak

View THOR ABLESTAR DEB, 561 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, 561

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2026-07-17T04:51:37.598Z)

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, 561 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 19 hours ago